Search found 13 matches

by MattMatic
Wed Jul 08, 2015 1:24 pm
Forum: Other Boards
Topic: Multitech mDot LoRaWAN board
Replies: 0
Views: 3141

Multitech mDot LoRaWAN board

Just had the Multitech rep in at work, showing us the full range of what's available (and what's to come)! Interesting to see their "mDot" product, which has ARM mbed libraries - but it's running the same CPU as the Pyboard 1 ;) Would be interesting to see the LoRaWAN (Low power, long range WAN) and...
by MattMatic
Fri Jun 26, 2015 8:38 am
Forum: Drivers for External Components
Topic: NEC Infrared receiver class
Replies: 5
Views: 4275

Re: NEC Infrared receiver class

There are many protocols for IR transmitters. I only implemented the NEC format. An output of 0,0,true indicates zero address, zero command, and a repeat. It's likely your remotes are not NEC format - the repeat signal in NEC format is simply an IR pulse. The command and data, on the other hand, are...
by MattMatic
Tue Apr 28, 2015 3:11 pm
Forum: General Discussion and Questions
Topic: Cpython in the pyboard?
Replies: 2
Views: 1177

Re: Cpython in the pyboard?

You'll find these slides helpful:

http://micropython.org/static/resources ... ernals.pdf

(Slide 5 onwards)
by MattMatic
Mon Apr 27, 2015 1:24 pm
Forum: Drivers for External Components
Topic: NEC Infrared receiver class
Replies: 5
Views: 4275

NEC Infrared receiver class

(Hope this is the right place THIS time :D ) Just threw together a little library in about an hour that will let you capture infrared remote values according to the NEC protocol. (The type available on eBay under "Arduino infrared remote") https://github.com/MattMatic/micropython-necir (NOTE: You ma...
by MattMatic
Sun Apr 26, 2015 5:33 pm
Forum: Hardware Projects
Topic: Long duration WAV player
Replies: 2
Views: 1611

Re: Long duration WAV player

pfalcon: first post I knew of :-( Didn't seem related to "Projects" as just a library rather than a project per-se. Wasn't immediately obvious TBH.

Will think twice before posting.
by MattMatic
Sun Apr 26, 2015 11:51 am
Forum: Hardware Projects
Topic: Long duration WAV player
Replies: 2
Views: 1611

Long duration WAV player

As promised, I've uploaded a simple "longwave.py" to GitHub: https://github.com/MattMatic/micropython-longwave/ It allows you to play much longer WAV files than memory can allow. I've tested it with 32kHz mono WAV files, happily playing many minutes of audio. Just added simple restart mechanisms so ...
by MattMatic
Thu Apr 23, 2015 11:07 am
Forum: General Discussion and Questions
Topic: DMA completion callback
Replies: 2
Views: 1539

Re: DMA completion callback

Aha! Fabulous! I had to read the reply a few times... but now I get it :) I had declared the callback as just a general (global) function in the "longwave.py" file, rather than as a class method of the LongWave class. Having made the callback a class method it all fell into place ;) I'll try and get...
by MattMatic
Wed Apr 22, 2015 8:09 pm
Forum: Drivers for External Components
Topic: MPU-6050 library
Replies: 2
Views: 4228

Re: MPU-6050 library

That's perfect - thank you Bryan!
by MattMatic
Wed Apr 22, 2015 2:17 pm
Forum: Hardware Projects
Topic: Driver for WS2812 RGB LEDs (NeoPixels, ...)
Replies: 27
Views: 16604

Re: Driver for WS2812 RGB LEDs (NeoPixels, ...)

Really appreciate the WS2812 library :) Got me going in under 5 minutes. However, I ran into a couple of minor issues. First, the "buf_bytes" are not correct. Since SPI shifts the MSB first, the assignment should be (0x88, 0x8e, 0xe8, 0xee). Having sorted that out my first NeoPixel worked properly. ...