SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-28T15:50:03-06:00SparkFun ElectronicsMySpleen on ROB-09211 - 3pi RobotMySpleenurn:uuid:fad0cfcf-9688-7033-e4d7-36c0d1e82ef42014-04-11T09:46:31-06:00<p>Currently, I'm making a soccer bot for school with an Arduino for a brain and crontrolled via bluetooth by my tablet. I'm thinking a similar thing for this. I want to try wifi sometime though</p>
CrazySwedishGuy on ROB-09211 - 3pi RobotCrazySwedishGuyurn:uuid:e5d896ee-7a04-e4e9-be17-3a030c030b1e2014-04-11T08:25:10-06:00<p>What wireless communication unit do you intend to use to control it from your tablet? Would you have a peripheral connected to your tablet, or just use the built-in wifi or bluetooth? (I'm curious because I'm working on something similar and decided to give RedBearLab's BLE Shield 2.0 a try...)</p>
MySpleen on ROB-09211 - 3pi RobotMySpleenurn:uuid:1369deeb-7529-2b77-3a4a-8c81beab27932014-03-19T21:43:04-06:00<p>Hacking this and putting my Arduino on it with a wireless communication to control it from my tablet sounds like fun</p>
Larsi on ROB-09211 - 3pi RobotLarsiurn:uuid:e3899279-f749-0df5-4608-d3d05a840a8e2014-02-02T21:15:13-07:00<p>Not sure on this one - the 20Mhz might be a problem. Arduino setup is usually either 8Mhz or 16Mhz - so the timing routines need to be changed (milliseconds and microseconds and such). Probably just selecting a different prescaler...</p>
Larsi on ROB-09211 - 3pi RobotLarsiurn:uuid:b0e35e65-0349-522f-5431-d18beadf1bde2014-02-02T21:09:26-07:00<p>Both, the ATMega328 and the ATMega168, are rated up to 20Mhz - so just connect a 20Mhz crystal and you are good to go.</p>
AdamTolley on ROB-09211 - 3pi RobotAdamTolleyurn:uuid:51e234c9-5ef5-9039-86ec-e5d8bbd569b62013-10-13T00:43:17-06:00<p>Thats odd - will it not run I standard alkaline baterries at 1.5volts apiece then?</p>
The Doctor Doge on ROB-09211 - 3pi RobotThe Doctor Dogeurn:uuid:7620f12b-33fa-b6f3-f81e-9bde232a5dd82013-07-30T21:00:22-06:00<p>How is that atmega328 running at 20MHz?????</p>
The Doctor Doge on ROB-09211 - 3pi RobotThe Doctor Dogeurn:uuid:de23ec46-b3ab-1b6d-d518-651a2f244b042013-07-30T20:58:36-06:00<p>Could one use the Arduino bootloader and language to program this?</p>
Alex Louden on ROB-09211 - 3pi RobotAlex Loudenurn:uuid:c5f0fd7a-2251-44f0-746b-17e6ddb338092012-10-07T22:37:40-06:00<p>There's an <a href="https://www.sparkfun.com/products/9564?" rel="nofollow">mbed</a> 3pi extension board available <a href="http://www.pololu.com/catalog/product/2152" rel="nofollow">here</a>, and complete package <a href="http://www.pololu.com/catalog/product/2151" rel="nofollow">here</a>. The mbed is great for high-level things like wireless communication, AI, etc, while the ATMega on the 3pi does low-level tasks - motor control, IR sensor/voltage readings.</p>
Customer #329322 on ROB-09211 - 3pi RobotCustomer #329322urn:uuid:43fe761b-9009-1446-9f9b-fdc3b7e812642012-07-16T19:35:31-06:00<p>Pololu upgraded the microcontroller for the 3pi. Now all of them use 328.</p>
Purple People Eater on ROB-09211 - 3pi RobotPurple People Eaterurn:uuid:d77550ca-d713-aca6-1990-b04398ef18772012-07-14T05:54:52-06:00<p>I'm confused, in the picture the microcontroller is labled as an ATmega168 but in the product description it is labled as an ATmega328 ?!?!</p>
_hunternet93 on ROB-09211 - 3pi Robot_hunternet93urn:uuid:bbb4915a-4631-2272-de21-67cd8511d0b72012-04-13T20:29:10-06:00<p>A note to others who purchase this: Make sure your AAA batteries are 1.2 volts. I spent 45 minutes trying to figure out why the thing wouldn't turn on until I realized that the batteries I was using were special 1.5 volt lithium batteries. Replacing those with standard AAAs fixed the problem.</p>
Felix08 on ROB-09211 - 3pi RobotFelix08urn:uuid:8d506fd7-98c9-7340-5e64-39c364a24d762012-01-08T18:22:51-07:00<p>May I change the program?</p>
TECH GEEK on ROB-09211 - 3pi RobotTECH GEEKurn:uuid:ab1e745f-e86b-20cd-9f18-8a02cffa98722011-10-01T01:47:19-06:00<p>This product has 1KB "persistent flash memory"(aka. EEPROM) not:<blockquote>
<p>"512 bytes of persistent flash memory"<br>
also when I first saw this product here I read the description and ended up not buying it because it had "persistent flash memory"<br>
(which was obviously very <a href="http://thesaurus.com/browse/persistent" rel="nofollow">determined</a> programming space. Which is of no use when you need to retain data!)<br>
Is it to much to ask to add the word EEPROM for people who read quickly or people who need to determine what "persistent flash memory" is cause' they have never heard of such a thingamagoo0p.<br>
(edit: there actually is such a thing as a <a href="http://www.makershed.com/ProductDetails.asp?ProductCode=MKBL1" rel="nofollow">thingamagoop</a> so i added an extra '0' to make it less/<em>more</em> confusing)<br>
(note: This comment is confusing 4 a reason I just don't know what it is tho =P )</p>
</blockquote></p>
Ben9 on ROB-09211 - 3pi RobotBen9urn:uuid:4b0cf262-cc84-26cc-1835-bfe564d4059c2011-05-18T12:49:24-06:00<p>They use 30:1 non-HP micro metal gearmotors. I don't think the next fastest non-HP motors (10:1) will have sufficient torque for good acceleration, and there are some complications involved in switching to HP versions of the micro metal gearmotors. Please see <a href="http://forum.pololu.com/viewtopic.php?f=29&t=2643&p=12116" rel="nofollow">this thread</a> on the Pololu forum for more information.</p>
IllogicGate on ROB-09211 - 3pi RobotIllogicGateurn:uuid:06cdc33f-af7b-ee00-6a72-88cc7362ce2e2011-05-14T09:01:18-06:00<p>Anybody know what Pololu Gearmotors this uses? I want to know so that if I ever buy one (which will probably happen) I can make it even FASTER.</p>
M-Short on ROB-09211 - 3pi RobotM-Shorturn:uuid:08a3d801-d200-36f9-636e-32206d89a0462011-04-25T16:42:19-06:00<p>The AVR pocket programmer should work<br>
http://www.sparkfun.com/products/9825</p>
RoboManiac on ROB-09211 - 3pi RobotRoboManiacurn:uuid:aba211a2-7c6c-1111-6a6e-f6aa5db824722011-04-22T12:07:01-06:00<p>It comes with the USB interface for programming?, if not which one from this site it's compatible I'm a complete beginner, thanks a lot.</p>
Ben9 on ROB-09211 - 3pi RobotBen9urn:uuid:77c4d187-62cd-3308-da61-5a110b4dcaa22011-02-16T23:08:20-07:00<p>The 3pi ships fully assembled, as shown in the product picture. It includes some through-hole LEDs that you can solder in if you want (the board has corresponding, pre-installed surface-mount LEDs, but these are on the underside of the PCB and can be difficult to see). The labeled bottom-view picture shows the surface-mount LEDs, and the labeled top-view picture shows an example of the through-hole LEDs soldered in.</p>
giobauermeister on ROB-09211 - 3pi Robotgiobauermeisterurn:uuid:ac535747-77f3-1021-b20a-8fd2bfb4eac82011-02-16T17:24:26-07:00<p>it comes already assembled?</p>
Rogue on ROB-09211 - 3pi RobotRogueurn:uuid:f5043099-c4f7-2227-e9be-4506bf8b33002010-07-21T22:23:12-06:00<p>Here is a 3pi video that is impressive!<br>
<a href="http://www.youtube.com/watch?v=mJV-KDqHgDQ" rel="nofollow">http://www.youtube.com/watch?v=mJV-KDqHgDQ</a></p>