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December 20, 2011
about 2 years ago
This is a great display for the money, certainly the best bang for the buck of you can live with B&W and lower res graphics. I have a lcd driver for Arduino I will post on http://www.marchdvd.com/5110 so take a look there it draws text aligned on pixels boundaries of 8 and draws lines and has invert video options.
about 3 years ago
This board is great! its faster than a Raspberry pi, and everything works out of the box unlike the bbbk.
I did a small comaprison benchmark on Rpi vs bbbk vs pcduino see it here http://www.marchdvd.com/pcduino/pi.php
very well designed, and function SD images too.
This is such a cool Linux board, compared to the other I had it just works and they did a great job writing the drivers unlike some device tree problems I had with the big names.
This board is a keeper!!!
about 4 years ago
Can some one give me an idea of how much resistance change there would be for 10 pounds? Or if 2.50 volts is tared voltage what would a 10lb force voltage be with %VDC applied to the sensors? Thanks in advance.
about 4 years ago
This will function with any micro that has a 9,600, 19,200, 38,400 57,600 or 115,200
serial port. All commands to list in groups decode speech play sounds are serial.
To upload the sound table you need a Windows PC and 2 apps
one to encode wavs file and the other to upload them
The default baud rate is 9600 and can be changed with a serial command.
I don’t know what the res. array are, no detailed schematic. But its not important.
You also get 3 I/O pins under serial control in or out with 200K or 20K pull ups
all set via serial commands. So they figure they took 2 pins RX & TX form you
and they give back 3 pins, altho slower to control due to serial commands.
Most commands are 2-3 bytes, and in printable ASCII - see manual for details.
There is a C++ class library with wrappers around a serial TX, RX to
do things like play sounds, etc etc..
The Board is nicely done and does nice speaker independent and speaker dependent (VR) voice recognition. For VR I give it 4 of 5 stars. The documentation is so-so no schematic, sketchy details on commands.
3 stars for doc. tech support form some distributors were bad just telling me to read the manual.
Once I got a hold of Veerar, and RoboTechSRL, these guys were great, they are very serious about
fixing problems and take user feedback to help improve their products.
The Arduino Class library has more details if you use the source Luke. The pc applications are the weak link. The EasyVR Commander that trains the words and organizes words in groups is OK, about 4 stars. The bad software is from Sensory called Quick Synthesis 5 it’s copyright 2002, and has been updated in 2011. So sounds tables are tricky. Sensory chips do very nice VR. Guess the Firmware guys can not write great pc apps! Sensory has great HW and buggy PC SW.
What the marketing ads don’t really make clear is the fact that the WORDS are SI and come in several languages and can not be modified. All user trained words are limited to 32 commands in up to 16 groups. When you listen for a word you have to say what group or word list you want, and it will come back with an index or error. We’re building a home control system, while it’s more flexible to add all the words to one group it makes VR accuracy less. Best accuracy is achieved with proper grouping, like verbs in one group, and appliance names in another and numbers in another and time in it’s own group. Then sentences like “Turn on coffee at 6am” make sense. Sensory’s QS5 app fortunately runs a command line exe helper utilities to compress waves to some raw data. These data files are hex blocks of assembler .db with decimal numbers. In theory its possible to load the sound table all thru Arduino code, and likewise train the board all thru Arduino code removing the PC bad app dependency 100%.
The QS5 and VC3.01 talk to each other, and share the .qxp project files. A weird funky-make-bug, causes VC to thing the project is out of date, because QS modifies the .qxp AFTER compressing the data. DONT SAVE THE FILE, leave the
asterisk on the title bar next to the file name, just switch to VC301 and upload the files from there.
I wish more of the command line utils were documented and the boot loaded protocol was too, so I could write my own command line utility and skip the GUI stuff. Perhaps soon!
I am writing a c++ syntax parser tree that a word / command / group
and reply and store parameters and calls functions in Arduino code to control things by voice command. It uses very little ram and keeps the syntax grammar tree as a large ascii string in flash memory. All in all excellent hardware, Tool have room for improvement, and manual could use some detail. But all in all the board is very good, and nothing else on the market seems to come close to it. All in all I am having fun with this board, now that Im over the Application problems.
No public wish lists :(
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