Search found 199 matches

by mcauser
Tue Oct 17, 2017 10:39 pm
Forum: ESP8266 boards
Topic: Is this ESP8266 module compatible with MicroPython
Replies: 2
Views: 30

Re: Is this ESP8266 module compatible with MicroPython

I can't see why it wouldn't be compatible. It looks like a typical "nodemcu" style ESP8266 dev board. Do you have the CP2102 driver installed? Try flashing it with a simple Arduino blink sketch to overwrite the AT firmware. You can't brick these devices, so worst case just erase the flash and start ...
by mcauser
Thu Oct 12, 2017 5:44 am
Forum: Drivers for External Components
Topic: Which Servo's
Replies: 5
Views: 161

Re: Which Servo's

I've used two entry level TowerPro servos, SG90 and MG995. They are not the fastest, strongest or most accurate, but they are easy to find and quite cheap. You can find a SG90 for around $1 each. Very small and with plastic gears. https://www.aliexpress.com/item/Free-Shipping-5PCS-LOT-SG90-9g-Mini-M...
by mcauser
Tue Oct 10, 2017 4:51 am
Forum: ESP8266 boards
Topic: [SOLVED] Memory upgrade: Expand flash to 32 MB
Replies: 10
Views: 309

Re: Memory upgrade: Expand flash to 32 MB

If you are using a D1 Mini, there's a SD card shield wired up to the SPI pins: https://www.aliexpress.com/store/product/Micro-SD-Shield-for-WeMos-D1-mini-TF/1331105_32578362865.html https://wiki.wemos.cc/products:d1_mini_shields:micro_sd_card_shield D5 - GPIO14 - SCK D6 - GPIO12 - MISO D7 - GPIO13 -...
by mcauser
Thu Oct 05, 2017 1:53 pm
Forum: The MicroPython pyboard
Topic: Ideas for next evolution of pyboard
Replies: 75
Views: 18796

Re: Ideas for next evolution of pyboard

It bugs me more than it should that 2 of the pyboard LEDs are rotated 90 degrees.
by mcauser
Wed Oct 04, 2017 1:53 am
Forum: Other Boards
Topic: Help needed for connecting a Black STM32F407VET6 to an 3.2 TFT LCD
Replies: 5
Views: 183

Re: Help needed for connecting a Black STM32F407VET6 to an 3.2 TFT LCD

Your AliExpress link didn't work. It's a link to your specific order. The Black VET6 board: https://www.aliexpress.com/store/product/Free-shipping-STM32F407VET6-development-board-Cortex-M4-STM32-minimum-system-learning-board-ARM-core-board/1817254_32618222721.html The Black ZET6 board: https://www.a...
by mcauser
Tue Oct 03, 2017 8:24 pm
Forum: General Discussion and Questions
Topic: DFRobot MicroPython tutorials
Replies: 0
Views: 117

DFRobot MicroPython tutorials

DFRobot MicroPython tutorials for ESP8266 and ESP32
https://www.dfrobot.com/blog-692.html
by mcauser
Sun Oct 01, 2017 11:29 pm
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 14
Views: 1749

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

@deshipu fixed the tabs -> spaces. Thanks for that.

@benalb added ESP8266 eg to the readme. Had to drop the SPI freq from 80MHz to 10MHz to make it work.
by mcauser
Sun Oct 01, 2017 2:16 pm
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 14
Views: 1749

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

The visualisation tool produce bytes in the wrong format. eg. "1" == 0x7e1818181c181800 == b'\x7e\x18\x18\x18\x1c\x18\x18\x00' You'd need to reverse that to be b'\x00\x18\x18\x1c\x18\x18\x18\x7e' Then convert from lsb to msb b'\x00\x18\x18\x38\x18\x18\x18\x7e' Then draw each in the byte array down a...
by mcauser
Sun Oct 01, 2017 1:50 pm
Forum: Drivers for External Components
Topic: Anyone working on a MAX7219 8x8 LED matrix display library?
Replies: 14
Views: 1749

Re: Anyone working on a MAX7219 8x8 LED matrix display library?

I added cascading to deshipu's driver, and added framebuf to give text and shape support: Works on my single 8x8 matrix, quad 8x8 matrices and 2x quad 8x8 matrices. https://github.com/mcauser/micropython-max7219 https://i.imgur.com/JzXKOf6.jpg If you have a chain of 4x 8x8 matrices and you want to o...