SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T04:03:40-06:00SparkFun ElectronicsCustomer #541486 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #541486urn:uuid:1d9982b7-5f2c-d511-bf50-d42b6bce9d312017-08-16T03:08:14-06:00<p>Bought this from Robotshop retailer. Worked right away like a charm. I even changed splash screen to display my software version. However at some point it stopped displaying text, then backlight started spontaneously switching off several seconds after powering on. I connected LCD to different device and started experimenting just sending one command at a time.
ALL 0xFE commands work just fine. I am able to switch display on/off, change between underline and blinking cursor, directly position cursor on screen and scroll screen around. 0x7C commands work too, I can control backlight and turn splash screen on/off. Reset 0x12 also works.
The only thing that does not work is actual text display. I tried all acsii characters at different cursor locations. It seems that something is going on, at least cursor jumps to 2nd line after printing 16 characters (does not move otherwise), except characters are invisible. Note that splash screen still works, with exact text I put there!</p>
Customer #829686 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #829686urn:uuid:2c8aff56-af07-577c-9da9-68d53c768fe92017-03-01T08:35:24-07:00<p>We designed a case to fit this LCD screen perfectly, and you can download it from <a href="http://www.thingiverse.com/thing:2144898" rel="nofollow">thingiverse</a> and use it for free :)</p>
Customer #388540 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #388540urn:uuid:6783eed5-24e9-083d-1787-b8220718f0022015-11-24T14:52:10-07:00<p>My only complaint with this product is the difficulty in mounting. Finally had to drill out the holes to accept 4-40 standoffs. The Eagle files don't include the complete board so making a screw hole template from the PCB is impossible. Otherwise works fine with my stand alone Atmega 328P using the SerLCD.h and SoftwareSerial.h libraries.</p>
spiked3 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vspiked3urn:uuid:26f16871-a612-3018-e0ca-1d254054b6912015-02-04T18:42:31-07:00<p>I'd have to say, as a 35+ year experienced programmer and spending over 4 hours trying to make this thing work any way logically, it needs a lot of work.
It is very difficult to reset which is required if it gets into some weird baud mode.
It is even more difficult to get it into the baud rate you want it, so leave it at 9600 if you ever get it working at that.
It assumes you have some ftdi cable and are talking to putty or some other terminal. Not very practical in the real world.
I spent more time today trying to use this to help in debugging an Arduino, than if I would have just soldered on a JTAG connector, installed linux, and used that.</p>
Customer #641708 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #641708urn:uuid:089b6011-c171-a863-d349-df81c139b92e2015-02-01T10:47:44-07:00<p>wrong place</p>
Customer #641708 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #641708urn:uuid:bf4dd922-0aba-fb83-8702-21f5c594bdff2015-01-22T14:03:26-07:00<p>could you tell me what the code was compiled in?<p>I trying to compile the C code in Mplab X and getting a serious amount of errors. I dont know enough yet about the PIC's/environment to fix them. Thanks in advance</p><p>Edit: Its compiled with cc5x and compiles with the cc5xfree, i had to comment out the include 16f88.h for my particular setup.</p></p>
Customer #218348 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #218348urn:uuid:4c445aa6-15ef-5f5c-8f98-05dcc5f5c63c2014-06-11T11:19:36-06:00<p>Is it possible to wire this up in parrellel rather than use the serial function? I ran into a snag and am unable to use the serial function of this lcd? I see the pinouts on the schematic but when wired it doesn't seem to work.</p>
Customer #376072 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #376072urn:uuid:4d8fde95-5aa1-c27c-60ac-a3fbd24a415d2013-10-28T15:28:22-06:00<p>I've created a new splash screen for the Serial LCD, now I want to save it to the Serial LCD memory. So, exactly how do I write a "control-j" to the Serial LCD. I've put in the required line to transmit special character 124, but I can figure out how to format the "control-j" line of code. I've Googled this for about an hour and can't find an explanation or sample code anywhere. Here's my code...<pre><code>void setup() {
sLCD.begin(9600); //Set serial baud rate with LCD
sLCD.write(0XFE); // = Decimal 254. This line of code MUST preceed the next line
sLCD.write(0X01); //Clears the screen. (See SerLCD 2.5 Data Sheet, page 2, Section 3.3)
sLCD.write(0xFE); // = Decimal 254. This line of code MUST preceed the next line
sLCD.write(134); //Places cursor on Row 0, Col 6 (See Data Sheet, page 3)
sLCD.print("NEW");
sLCD.write(0xFE); // = Decimal 254. This line of code MUST preceed the next line
sLCD.write(193); //Places cursor on Row 1, Col 1 (See Data Sheet, page 3)
sLCD.print("SPLASH_SCREEN");
sLCD.write(0X7c); // = Decimal 124. This line of code MUST preceed the next line
sLCD.write("< control >j"); /*If you copy & paste this code, remove the spaces in front of an behind "control".
I had to add the spaces so that the inequality symbols and "control" would show up
This should save Splash Screen to LCD memory (but it doesn't)
Multiple Errors are generated if quotation marks are omitted.*/
}
</code></pre><p>Instead of getting "NEW" on the first line and "SPLASH_SCREEN" on the second line, I get "ntrol>NEW" on the first line and "SPLASH_SCREENco" on the second line. Naturally you might leave off the quotation marks from around "< control > j", but that just generates multiple errors. Any suggestions?</p></p>
Toni_K on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VToni_Kurn:uuid:ab7d3299-f63e-cbf6-3f9f-46ac2ea20cb02013-08-18T23:09:48-06:00<p>I'm not sure if you're referring to comments on the website, or on your LCD screen. You can contact techsupport@ and they'll be able to assist you further.</p>
Toni_K on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VToni_Kurn:uuid:4cbcbe9f-9cb0-df3c-9526-1405032f4fed2013-08-18T23:07:50-06:00<p>No, this is TTL serial. You would need an I2C to UART converter.</p>
Customer #439309 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #439309urn:uuid:7dba1a79-d636-f077-ebd6-f1d9f30856772013-08-18T13:42:24-06:00<p>my comments don't work</p>
Customer #439309 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #439309urn:uuid:7ee4a20c-c1fe-267b-3a8b-da9b96f7e7282013-08-18T13:41:00-06:00<p>is this I2C compatible</p>
Toni_K on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VToni_Kurn:uuid:f8e390b4-d72b-bd74-4e84-a73f8c1d78d82013-07-05T09:45:24-06:00<p>We recommend using this <a href="https://www.sparkfun.com/products/8733" rel="nofollow">JST Interface cable</a>.</p>
Customer #335103 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #335103urn:uuid:603fcbf1-4350-60f8-9dac-3d457b34915e2013-07-04T12:34:55-06:00<p>I think I ruined this trying to solder to the connect points, would like easier way to hook up.</p>
Customer #335103 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #335103urn:uuid:31225898-1508-9c2a-1bdd-e5d24f2667b22013-07-04T12:33:22-06:00<p>where can i get a 3-pin connector to breakout the RX, gnd, 5v for easier access
maybe to a screw terminal or female connection</p>
Customer #367155 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #367155urn:uuid:1a1c5223-cd2e-5eae-552f-5fc56021b00d2013-05-28T11:40:56-06:00<p>Did a Solid Works drawing here for those designing enclosures may come in handy:<p>http://grabcad.com/library/sparkfun-serial-enabled-16x2-lcd-1</p></p>
MikeGrusin on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VMikeGrusinurn:uuid:a94d52ce-5aa6-80a3-0c58-980f14fbaf1c2013-04-30T10:44:56-06:00<p>It was an older rev, but the features haven't changed.</p>
IanM on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VIanMurn:uuid:c289385e-c97c-66cf-92ce-8a07466bf5d52013-04-30T02:29:00-06:00<p>Was this same PCB green at one point, or was that an older rev with different features?</p>
Customer #428060 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #428060urn:uuid:c20bad79-c5be-3dec-3c9d-5a8d7bf79b8c2013-04-11T02:55:50-06:00<p>I have used a Labview program for this LCD. When i send character 'a', the display is '0'. Does anyone having a same problem. How should I troubleshoot this problem.Tq</p>
Dallas Edwards on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDallas Edwardsurn:uuid:31a82a42-7034-723c-7478-c3e5cb6f3c2c2012-11-23T20:16:41-07:00<p>Just tried it and it does!</p>
FrankenNeil on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VFrankenNeilurn:uuid:29c7d2ad-0bca-4566-8f7a-e55b83e17ffd2012-09-23T18:40:40-06:00<p>Has anyone managed to get the PWM backlighting working with an Arduino? I'm trying variations of this and nothing works except the standard On/Off commands using 0xFE as the escape. All my attempts turn the display off but the backlight LED is on full.<p>The splash screen on mine says SerLCD 2.5 so I believe my firmware is current. My board's about 8 months old.</p><p>void backlightLow() {
//serCommand();
Serial.write(0x7C);
Serial.write(140);
}</p><p>void backlightSet(int level) {
Serial.write(0x7C);
Serial.write(byte(level + 128));
}</p></p>
SONorris on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VSONorrisurn:uuid:9c51d22a-9dda-ac1b-355a-fe06c8dbfc092012-08-07T20:39:19-06:00<p>Why do I get power out of the VDD port with only RX and GND hooked up? I have a 5V rail that I use to power everything on my board - and when I added this SerLCD I now have a bridge between the arduino power and my 5v line ... which I dont want. Can I add a diode to the VDD to stop reverse voltage from powering my board?</p>
Customer #197750 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #197750urn:uuid:8325f6f2-65a9-c3d8-2e26-e22de5ce23992012-06-04T20:16:28-06:00<p>I'm having trouble setting the cursor position on the second line, can anyone help? This line of code (PICAXE) works fine:<pre><code>serout B.5, T9600_8, (254, 142)
serout B.5, T9600_8, ("++")
</code></pre><p>and puts two pluses at the very end of the first line. However, this code doesn't put anything on the screen, where it should put two plusses at the start of the second line, correct?</p><pre><code>serout B.5, T9600_8, (254, 146)
serout B.5, T9600_8, ("++")
</code></pre><p>any ideas, anyone? Thanks!</p><p>*** Edit - never mind, got it! Apparently the position numbers aren't contiguous, so it has to be location 192. Way to read the datasheet, Chris!</p></p>
Customer #312790 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #312790urn:uuid:e00b207c-801b-0a8b-91a1-d7008094ea0a2012-04-02T12:11:20-06:00<p>Does anybody know how to do a hard reset on this LCD? While I was uploading my code, I left it plugged into TX, and it doesn't work anymore. I'm realizing that it probably got spammed with commands and the configuration got messed up. Does anybody know how to reset to factory defaults?</p>
RobertC. on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VRobertC.urn:uuid:5b15ba87-6f72-92b8-18d2-3cb4d59a61202012-03-01T15:04:25-07:00<p>What doesn't work on it? Have you contact tech support yet? They should be able to help you out.</p>
Maverick Ideas on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VMaverick Ideasurn:uuid:96ba304d-7523-a946-3e2f-2d86c66330d62012-03-01T10:53:24-07:00<p>Not sure of your situation, but i've connected my lcd backwards to my arduino twice and its still good. Robust, just the way I like it.</p>
RobertC. on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VRobertC.urn:uuid:7644071a-f7b9-c4ad-9129-f6b692c5b5082012-02-21T17:05:01-07:00<p>scroll way down and see how I did it:<p>http://www.sparkfun.com/tutorials/204</p></p>
ShadowGrass on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VShadowGrassurn:uuid:67bc49c4-e6c5-884f-d489-ea77c57633392012-02-21T16:13:35-07:00<p>Being new, I am trying to mount this in a project box. Does anyone know where I can find a bezel for this or can someone offer some advice on how best to mount this into the cover of a project box so that it looks professional?</p>
Doogie on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDoogieurn:uuid:7188d326-6f7a-e9d1-c8d4-ea3c6578d2bf2012-01-27T14:55:05-07:00<p>I think SparkFun needs to add a pull-up resistor on pin 4 (Vpp). This pin is an input (not input/output) and should not be left floating. Another pull-up on the RX pin would also be advisable.</p>
Customer #128577 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #128577urn:uuid:6865bd81-877d-bb4f-d09b-c8641c29a8942012-01-24T12:01:35-07:00<p>It seems like the MCLR function has been disabled through the config bits. No pullup to Vdd is installed. This makes it really irritating to work with this display. Programming an arduino with this hooked the HW serial port will screw up the display, and without the reset line you have to pull power. A simple solution would just be to wire the PICs MCLR pin to the Arduinos reset line, but this isn't possible without the MCLR function obviously.</p>
Customer #268897 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #268897urn:uuid:81ad05ff-2b19-f9ab-1e9f-bf905bd5a1a02011-12-16T15:40:30-07:00<p>I'm using usb->rs232 adapter for data and an open wire usb cable for power and am getting garbage on all baud rates using code and putty. Am I doing something wrong?<p>Lcd: http://www.sparkfun.com/products/9395
Setup: http://imgur.com/g9GKB
Code: http://pastebin.com/3DsWZFQH</p><p>Edit: begining to think I need to ensure my data is switched between 0-5v using a TTL adapter like this: http://www.acroname.com/robotics/parts/ ... ERIAL.html</p></p>
Customer #270359 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #270359urn:uuid:f7590f4a-091e-e066-0894-f7fc596bcd322011-12-01T13:00:42-07:00<p>Quick suggestion... It'd be very helpful for some people if you guys added a note in the description pointing people to the correct 3-pin JST jumper wire to be used with these serial LCDs. Two reasons... it's not clear that the jumper is not included, and you have 3-pin jumpers in your catalog which don't work with this serial LCD.<p>And I realize it shows up in the 'related products' list, as do many things I don't need.</p><p>Thanks.</p></p>
N00b_Programmer on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VN00b_Programmerurn:uuid:269ae399-64ea-9f9a-55dd-0cd5c00c40a62011-09-15T10:07:54-06:00<p>I have ported LiquidCrystal library for use with the serial LCD you can look at my code here. Still working on finishing all the documentation. But putting up for now hopefully someone will find it usefull.<br>
http://arduino.cc/playground/Code/SerLCD<br>
-Thanks</p>
BUCE on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VBUCEurn:uuid:d2b125ec-a7fe-5e82-9ff8-292981f6953e2011-08-01T00:03:30-06:00<p>Are there any updated drawings of this? I'm trying to design a board and would like to know the positions of the stand-off holes. All of your drawings are only for the "backpack". Thanks!</p>
EliTheIceMan on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VEliTheIceManurn:uuid:00ba1b83-3a1b-93e8-3f8e-12240a2683492011-07-16T00:54:35-06:00<p>Has anyone driven the data line at 3.3V? I wouldn't think it should be a problem...</p>
James - Orange on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VJames - Orangeurn:uuid:df83c7b3-fdd3-3483-5748-ebf5b87ed8cf2011-06-28T14:39:45-06:00<p>Schematic is no longer up to date it appears, for example JP2 only has 6 pins in the schematic, where it has 10 pins on the board in the pictures.</p>
JLC on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VJLCurn:uuid:fe5f8cce-4ab3-3128-40f2-1f392a0d0acc2011-06-06T20:06:08-06:00<p>Shouldn't be a problem.</p>
MyBuddy on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VMyBuddyurn:uuid:63b70a61-eb85-cc1f-f0c6-c7d2dbcee15f2011-04-09T12:33:15-06:00<p>I bought this about a year ago and am finally playing with it now, but I see that the V2 schematic doesn't match my board's jumpers. Mine has JP1 a 6-pin and JP2 10-pin, JP3 is 3-pin, just like in the picture above.<br>
my board is: 2010-4-25<br>
adm1602U-NSW-FSB/Z<br>
5.0V</p>
Rhettkun on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VRhettkunurn:uuid:1edde3f3-e3cf-5ed0-f88a-2d4a50bf8a532011-03-21T20:24:15-06:00<p>can you power these right off an arduino's 5v rail?</p>
Echo on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VEchourn:uuid:92143f31-8cb8-3f2a-24b4-486b3a794d162011-03-13T10:58:48-06:00<p>Have you figured out how to get it to work properly when it shows blocks all along the top line? Mine has done this since the day I received this.<br>
Edit: Got mine fixed. If you checked the soldering on all the terminals, check them again. I also sometimes was getting strings of garbage if I wriggled the terminals on the LCD (I suspect because I was getting a partial connection on the bad terminal). Resoldered and it is working fine now.</p>
Mr Earl on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VMr Earlurn:uuid:435b672a-738a-7cc8-903a-0716c474c4ee2011-03-07T09:48:43-07:00<p>I'm confused by the data sheet. It says JP2 numbered from 1 through 6.<br>
However, on the LCD JP2 is numbered through 10. What are the remaining 4 pins for? (and where can I find the documentation for them?)</p>
Dezorian on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDezorianurn:uuid:22d1c069-e58c-c773-78fa-927d4e82b1e72011-02-23T06:52:50-07:00<p>I have the same question. I now have the 3.3v serial enabled LCD (with backpack) and want to use this one for future usage. VDD of 5V can be supplied, but will the TTL work when its getting 3.3V signals from the TX from Netduino?</p>
Customer #104909 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCustomer #104909urn:uuid:4d758acd-8ce0-8e83-db90-5e60d768a1eb2011-02-13T13:26:23-07:00<p>Same question. I have an order being held up by this.</p>
Mr Earl on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VMr Earlurn:uuid:51292996-63a7-e4ac-ab18-b6776b6c52722011-01-14T06:23:26-07:00<p>Hi, guys!<br>
Is there any estimation when these LCDs will be back in stock again?</p>
acmeng on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vacmengurn:uuid:006a4074-bfec-48d9-878b-6215b23029862010-12-01T04:51:24-07:00<p>I'm surprised that a mechanical drawing is not included in the data sheet. It's not too hard to measure but seems like a documentation oversight for anyone who wants to integrate the display into a case.</p>
Nakor on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VNakorurn:uuid:d49f824f-9170-d789-5975-f7dcc1ccf0a22010-11-26T18:39:28-07:00<p>Hmm. I just scanned through the code. It appears that the code was written without a command to shut off text wrapping. That is just bad practice. I already wrote my system to avoid the text wrapping, but just so I know, is there a way to update the PIC on this?</p>
Nakor on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VNakorurn:uuid:2096861a-a9ea-cc0c-f416-4dfbdba0b7032010-11-25T17:09:44-07:00<p>Does anyone know how to disable text wrap? It is annoying me that I can't find a command to disable it.</p>
Lucas Fragomeni on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VLucas Fragomeniurn:uuid:632af315-8283-24ab-d940-2c41dc96ae7d2010-09-18T08:55:55-06:00<p>Very nice lib. Thanks.</p>
taler on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vtalerurn:uuid:c082c241-4a11-2ff1-2aa7-146fb7e34c422010-08-14T15:37:07-06:00<p>hi,<br>
now my lcd will show only 7 char on left side on two lines. Before the lcd works good and views 16 chars on two lines.<br>
I don't know what happens to do this.<br>
Anywhere to help me?<br>
taler</p>
thirteenthd on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vthirteenthdurn:uuid:b9ffcf06-0e89-208d-26ba-4732002be6d62010-07-21T17:21:57-06:00<p>Somehow it returned to normal with no additional work on my part...</p>
thirteenthd on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vthirteenthdurn:uuid:c92e4cf9-0a49-1ca9-1fd9-954d8b25488c2010-07-13T10:54:12-06:00<p><strong><a href="account.php?id=75445" rel="nofollow">pichenettes</a>:</strong> <em>...<br>
A problem that appeared recently is the display losing its "line width" setting, and resulting in text strangely wrapped.</em><br>
I'm also having the same problem after accidentally sending the control character '|' followed by '\', '-', '/' to the LCD as I was trying to animate a rotating bar to indicate a busy status.<br>
As it is right now, text is wrapping at the 12th character but I can still draw in all the viewable area if I specify cursor location.<br>
Does anyone know how to set the text wrapping?</p>
jazfresh on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vjazfreshurn:uuid:19dc037f-89f0-f13d-1543-c60161e22ba02010-07-11T01:05:11-06:00<p>Yes you can, but you are limited to only 8 custom characters. First define 8 bytes that will hold your custom character, one byte per line (obviously only the lower 5 bits can be used since this is a 5x8 display). Then decide which character (from 0-7) you want to set. Call this "x". Then do this pseudocode:<br>
for(i = 0; i < 8; i++)<br>
lcd.print(0xFE, BYTE); // Send command<br>
lcd.print(0x40 | (x << 3) | i, BYTE); // Set the CGRAM address<br>
lcd.print(character_data[i], BYTE); // Set the character<br>
}<br>
lcd.print(0x80, BYTE); // Set the cursor back to DDRAM<br>
To use your custom character, use:<br>
lcd.print(x, BYTE);</p>
pichenettes on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vpichenettesurn:uuid:8d33b461-d640-6e1c-364e-6a3f2bf853782010-06-30T18:36:41-06:00<p>I echo Doogie's report. It happens that some of the settings supposed to be written to eeprom (baud rate, splash screen) are lost after several power cycles.<br>
The baud rate problem can be solved by writing at 9600, at startup, a "change baud rate" command to the target rate. At worst, the display is already at the target rate and will misinterpret the command and display garbage, at best, it will be set to the right baud rate.<br>
Splash screen is more problematic, since there's no command to systematically enable/disable it - there's only a "toggle" command, and no way of knowing if it is in the desired state or if it reset itself.<br>
A problem that appeared recently is the display losing its "line width" setting, and resulting in text strangely wrapped.</p>
JerryRigged on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VJerryRiggedurn:uuid:b844174e-4976-891e-6d2b-2097e6d9cc742010-06-27T18:53:53-06:00<p>Does the serial version of the display still have the parallel pins available on it? I would like to use the serial access for the most part, but I might need regular old parallel for one project.</p>
societyofrobots on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vsocietyofrobotsurn:uuid:7361d397-ba8b-50e5-134b-a3caa9824c0d2010-06-08T08:34:01-06:00<p>Anyone know if this will work at 3.3V TTL, or will work while being powered below 4V?</p>
NotHans on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VNotHansurn:uuid:9b19cf3c-cd43-4e49-13c8-e9f2d07b8e332010-05-28T15:17:27-06:00<p>The IO-204 has two ways to output serial - one directly out of a channel and the other is thru a serial smart board. If you see "SO=" then the widget was using the smart board protocol. Using a Serial Out widget under "I/O Channel Widgets". I hope that helps out.</p>
Neverhood on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VNeverhoodurn:uuid:74571096-e0bb-bfbc-d0b6-79d4280bca212010-04-29T21:10:14-06:00<p>I mean custom character as in if I wanted a pac-man character to go across the screen and eat the text.</p>
RobertC. on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VRobertC.urn:uuid:affe5fe7-3b91-4063-e6b1-42fea29004b12010-04-28T17:01:42-06:00<p>Define 'custom characters'. ASCII characters, or like the batman symbol.</p>
Neverhood on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VNeverhoodurn:uuid:0cbeaa1d-59c6-5501-2506-ed1ab23262072010-04-28T16:48:04-06:00<p>Is there anyway to display custom characters on this display through serial or am I missing something in the datasheet?</p>
Altitude on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VAltitudeurn:uuid:e1c41ef8-3687-d411-de25-d2833b68eb992010-04-04T18:29:23-06:00<p>Greetings,<br>
Can someone point me to a mechanical drawing of this? I am working on a case for a project and need the XY coordinates of the holes, viewable area etc..</p>
mrsteve on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vmrsteveurn:uuid:8933db8c-091d-8070-d552-78ce54a9b1702010-04-02T22:51:23-06:00<p><strong><a href="account.php?id=92509" rel="nofollow">mikegoelzer</a>:</strong> <em>Why does the datasheet on this page say "V2.5" but the schematic say "V2"? If I order the item on this page, am I buying v2 or v2.5?<br>
I'm asking b/c I'm in a space constrained situation where the serial backpack just isn't going to fit. The datasheet (2.5) shows a picture with a backpack (soldered on?), but nothing else on this page suggests that any backpack is required to talk with this device thru 3-wire serial.<br>
Basically, if I can't accommodate the backpack's size, is it a mistake to buy this?</em><br>
Having ordered this exact LCD myself, I can say that aside from the issue mentioned in my other comment, it looks exactly like the picture. No bulky backpack module, everything is on a single board. Pretty sleek, really.<br>
Also, the mounting holes are too small for the #4-40 screws that most Sparkfun boards will handle. Just FYI, I found this out about 45 seconds ago...</p>
mikegoelzer on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vmikegoelzerurn:uuid:197dee6d-99e8-12ad-48f8-2667005fbc1f2010-03-29T11:57:43-06:00<p>Why does the datasheet on this page say "V2.5" but the schematic say "V2"? If I order the item on this page, am I buying v2 or v2.5?<br>
I'm asking b/c I'm in a space constrained situation where the serial backpack just isn't going to fit. The datasheet (2.5) shows a picture with a backpack (soldered on?), but nothing else on this page suggests that any backpack is required to talk with this device thru 3-wire serial.<br>
Basically, if I can't accommodate the backpack's size, is it a mistake to buy this?</p>
mrsteve on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vmrsteveurn:uuid:7ab3a6d2-bc3a-4ebe-406c-7822a12d8aba2010-03-27T23:19:19-06:00<p>Is it just me, or are the solder holes for VDD, GND, and TX near the JST connector too small to accept standard pin headers? Perhaps I just need to use a little more force? I see that one of the pictures of this module shows what appear to be standard headers installed in that location, so I am confused..</p>
zachtos on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vzachtosurn:uuid:f77f9ada-4b11-a769-40ea-3cfd9d01e4982010-03-23T14:21:59-06:00<p>I used a few of these in my IRcombat laser tag game with my arduino duemiloves and love them. I also used the Red and Black. I like the white and black better outdoors and the red/black indoors. I just wish I could figure out how to send the reset code to them. I know how to clear and change brightness in code, but the ctrl+ command boggles my mind. A few of them have to be unplugged and plugged back in to work after power on because of this issue. Not worth replacing them yet.</p>
DougTidwell on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDougTidwellurn:uuid:f20d0126-cf5b-0bcc-7cd8-dc788de594002010-02-17T12:48:20-07:00<p>Does anybody know if the Infrared Sensor Jumper Wire (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=8733" rel="nofollow">http://www.sparkfun.com/commerce/product_info.php?products_id=8733</a>) works with this board? Barring that, anybody know where to find a 3-pin JST connector?</p>
hafiz on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vhafizurn:uuid:8c740415-95ef-8e23-b505-f1240a9ee2482010-02-06T21:22:51-07:00<p>Hi...noob question. how do i send data on the fly via arduino? it only has 1 connection to tx. i tried using the serial monitor to send something, but it doesnt work...im looking for something which i guess is similar to liquidCrystal->SerialDisplay example.<br>
Thanks for the help.</p>
JWerner on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VJWernerurn:uuid:92549b09-df70-8c95-59dd-76d36298718b2010-01-24T10:30:04-07:00<p>Nevermind, my own fault. I calculated the wrong offset to the start of the second line when I repositioned the cursor. Although the second line was displayed correctly, the offset was wrong by -32.</p>
JWerner on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VJWernerurn:uuid:c8497e31-0d64-6292-e619-863838d9ad482010-01-23T14:22:43-07:00<p>I'm having trouble setting the second line of the splash screen. I can set the first line to whatever I'd like. But no matter what I put on the second line, it isn't saved when I send in the 0x7C, 0x0A sequence. Just to be clear, I do set both lines before sending the sequence.</p>
TMC4242 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VTMC4242urn:uuid:631ad5ba-88f1-1ea0-1706-58fb3e5904842010-01-14T11:05:30-07:00<p>Hi,<br>
I notice that the datasheet is lacking environmental specifications for this device. It would nice to have that information. Temperature limits especially.</p>
Tycho Vhargon on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VTycho Vhargonurn:uuid:5ff6c7ea-f470-40d8-420c-3a576d0b404d2010-01-09T10:08:01-07:00<p>It turned out to be the ioBridge that was formatting the serial outputs weird. The Arduino works fine with it.</p>
Tycho Vhargon on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VTycho Vhargonurn:uuid:55f87899-6b08-b6fe-03e5-10a4e7929e372010-01-09T10:06:51-07:00<p>The other pins are used if you want to control the LCD without using the serial standard. There's some tutorials on how to do that with the arduino below. You have more control over what you can do with it, but it takes up more pins on the arduino. If you want to wire it up this way, don't spend the money on the serial interface, they have cheaper LCD's that allow you to do it this way, without the serial.<br>
<a href="http://www.hacktronics.com/Tutorials/arduino-character-lcd-tutorial.html" rel="nofollow">http://www.hacktronics.com/Tutorials/arduino-character-lcd-tutorial.html</a></p>
AMCDawes on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VAMCDawesurn:uuid:14b4f709-897f-06a3-9048-307b5563abfd2010-01-03T07:43:58-07:00<p>I've put together some python code for sending serial data to these LCD screens. In particular, the code pulls my twitter status and writes it to the LCD. To work with the extra characters, I wrote functions to page the text (vertical scroll) or scroll the text (horizontal scroll). Details are available here: <a href="http://dawes.wordpress.com/2009/12/23/twitter-to-lcd/" rel="nofollow">http://dawes.wordpress.com/2009/12/23/twitter-to-lcd/</a><br>
Thanks for this great module, I've really enjoyed tinkering and actually had the first version working in under an hour!</p>
Cannikin on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VCannikinurn:uuid:d8de8ad0-fdc7-55e2-b3e9-c631fef494352009-12-24T22:41:40-07:00<p>Just got this guy and it's working great! I put together a sketch for using this with an Arduino: <a href="http://github.com/cannikin/arduino_serial_lcd" rel="nofollow">http://github.com/cannikin/arduino_serial_lcd</a></p>
Doogie on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDoogieurn:uuid:5557938d-6c63-0dce-e2a7-3fbd6e0ff1892009-12-18T11:26:26-07:00<p>The data stream I tapped into once inadvertently changed the backlight level to something less than 100%, and I noticed that the dimmed display had a noticeable flicker.</p>
Doogie on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDoogieurn:uuid:12b8a66c-e5f6-085e-1d7b-57d1fe0c6c902009-12-18T11:21:16-07:00<p>I have a couple of suggestions for a future version: On the PCB layout, please add a thermal to the ground pin for the user connectors to make it easier to hand solder. Please change the firmware to make it more difficult for a random serial stream to stumble upon a configuration sequence. Maybe pick a non-printable prefix character like ESC instead of the vertical bar. Please make the brightness values more user friendly, like 1, 2, 3, etc. Maybe have an option to make the display scroll when it gets full, instead of resetting the cursor to home and overwriting. All-in-all, a fun little platform. Thanks for using a PIC on this one! I think I may try my hand at writing some new firmware for it. Cheers!</p>
Doogie on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VDoogieurn:uuid:43110bd4-79fa-c896-05e2-2c74d6e3ae7b2009-12-18T11:14:21-07:00<p>I received mine just yesterday and hooked it up. It definitely works, but it occasionally "wigs out" in various ways. I set my own splash screen, which worked fine the first couple of times. The third time I powered it on I got a screen with one line of white blocks and one blank line. It has lost the baud rate setting on me several times. Sometimes I get reverse video garbage characters for some reason.</p>
Scotty on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VScottyurn:uuid:2c145706-53a5-0bd9-5112-2845bc05663a2009-12-08T23:05:16-07:00<p>does anyone know if reversed polarity will kill this? That's the only reason I can think of as to why mine will not work! I've tried everything!</p>
Striker121 on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VStriker121urn:uuid:98eb9217-789a-2004-6ed2-426f43c5c99e2009-11-22T18:18:58-07:00<p>Wait, so I get the 3 pins for power and control, but whats with all the other pins on the sides? Can it be used to control another LCD besides the one built in?</p>
jimblom on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5Vjimblomurn:uuid:cd482996-2492-5379-b9d7-c587a9ba66052009-11-12T09:47:41-07:00<p>Hi there,<br>
Hmm, we'd be happy to help. Can you send us an email detailing your setup? If characters aren't being received/printed correctly, my first suggestion is usually to try other 'standard' (2400, 4800, 9600, etc.) baud rates.<br>
-techsupport at sparkfun dot com</p>
Tycho Vhargon on LCD-09395 - Serial Enabled 16x2 LCD - White on Black 5VTycho Vhargonurn:uuid:3f906229-02ac-f0e8-b798-2c680e09999e2009-11-11T16:57:18-07:00<p>I'm using this with an ioBridge. All the commands I send end up looking like |||SO="whatever". It happens with everything I write, including the clear screen commands and such. Any tips?</p>