Search found 339 matches

by mcauser
Fri Jan 11, 2019 3:05 am
Forum: Hardware Projects
Topic: small form factor STMF407 board
Replies: 6
Views: 214

Re: small form factor STMF407 board

Not yet, at least... If you're after tiny boards for your robots, would one of those BetaFlight STM32F405 based flight controller boards be suitable? They don't seem to break out many pins, but are very light and compact and often have useful components like EEPROMs and gyros/accelerometers. What ev...
by mcauser
Thu Jan 10, 2019 10:13 am
Forum: Hardware Projects
Topic: small form factor STMF407 board
Replies: 6
Views: 214

Re: small form factor STMF407 board

Same seller has a STM32F429BIT6 board for ~$45.
by mcauser
Thu Jan 10, 2019 9:50 am
Forum: Hardware Projects
Topic: small form factor STMF407 board
Replies: 6
Views: 214

Re: small form factor STMF407 board

It’s very compact and one of the first I’ve seen with USB-C :) Only minor differences between the pyboard and VET6 defs. See: https://github.com/mcauser/VCC_GND_F407 https://github.com/mcauser/BLACK_F407VE The ZET6 is also similar: https://github.com/mcauser/BLACK_F407ZE And the ZGT6 too: https://gi...
by mcauser
Tue Jan 01, 2019 12:09 pm
Forum: Hardware Projects
Topic: NeoPixel using microPython
Replies: 4
Views: 217

Re: NeoPixel using microPython

by mcauser
Sat Dec 29, 2018 6:46 am
Forum: Other Boards
Topic: My new PYB Nano board is coming
Replies: 34
Views: 9158

Re: My new PYB Nano board is coming

AliExpress is a lot easier to use for English speaking buyers. Using Taobao with Google Translate is extremely difficult. Last time I tried using Taobao, I ended up getting it shipped to a holding warehouse then had to pay another $50 to ship (the $10 board) to Australia. Are you in Sydney @Outofthe...
by mcauser
Mon Dec 17, 2018 4:45 am
Forum: General Discussion and Questions
Topic: EEPROM Page write - AT24C512
Replies: 2
Views: 348

Re: EEPROM Page write - AT24C512

Isn't it as simple as: from machine import I2C i2c = I2C(scl=Pin(5), sda=Pin(4), freq=100000) buf = bytearray(b'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed metus, hendrerit in elit quis, ultrices Maecenas lobortis sed orci.') i2c.writeto_mem(0x50, 0, buf, addrsize=16) # write 128 by...
by mcauser
Mon Dec 17, 2018 4:16 am
Forum: Other Boards
Topic: Taobao pyboard clone
Replies: 0
Views: 442

Taobao pyboard clone

Found this interesting looking pyboard clone on Taobao:

Image

https://item.taobao.com/item.htm?id=570751617176
by mcauser
Mon Dec 17, 2018 4:08 am
Forum: The MicroPython pyboard
Topic: MicroPython on generic STM32F407 board
Replies: 1
Views: 436

Re: MicroPython on generic STM32F407 board

Similar to our efforts with these other generic F407 boards:
* https://github.com/mcauser/VCC_GND_F407
* https://github.com/mcauser/BLACK_F407VE
* https://github.com/mcauser/BLACK_F407ZE
* https://github.com/SpotlightKid/BLACK_F407ZG

This thread might be better suited on the "Other Boards" topic.
by mcauser
Mon Dec 17, 2018 2:16 am
Forum: Drivers for External Components
Topic: TMP75
Replies: 3
Views: 566

Re: TMP75

Should also work for other TMPx75 sensors, TMP275, TMP175 etc.
by mcauser
Mon Dec 17, 2018 2:15 am
Forum: Drivers for External Components
Topic: TMP75
Replies: 3
Views: 566

Re: TMP75

I don't have one of these sensors, however, the interface seems simple enough. http://www.ti.com/lit/ds/symlink/tmp75.pdf Configure the sensor to use a specific resolution, 9,10,11 or 12 bit. Read 12 bits from the temperature register. Convert data from twos compliment to temperature in Celsius. Sca...