Search found 1344 matches

by deshipu
Tue Mar 26, 2019 11:24 am
Forum: micro:bit boards
Topic: Neopixel RGBW
Replies: 21
Views: 439

Re: Neopixel RGBW

The online editor is ancient, and updating it involves a lot of red tape and jumping trough hoops.

Best use the Mu editor, as it includes a recent version of MicroPython, and lets you work without Internet connection.
by deshipu
Fri Feb 08, 2019 10:51 am
Forum: ESP8266 boards
Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
Replies: 8
Views: 2791

Re: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi

Neither the ESP8266 chip itself, not the ESP8266 modules, have a 3.3V voltage regulator. There is usually a voltage regulator on the development boards, but it varies between the board make and version, so there is no single answer to that.
by deshipu
Sat Jan 12, 2019 5:04 pm
Forum: micro:bit boards
Topic: Receiving radio packets with NRF24L01
Replies: 6
Views: 3163

Re: Receiving radio packets with NRF24L01

Nordic Semiconductors is pretty much the only reputable brand of NRF24L01 chips ;-)
by deshipu
Fri Jan 11, 2019 4:25 pm
Forum: Other Boards
Topic: Looking for a board with 16 ADC channels and WiFi
Replies: 8
Views: 442

Re: Looking for a board with 16 ADC channels and WiFi

Just use your NodeMCU and add an external ADC chip. For example, here is a library for ads1015, which has a lot of cheap breakouts available: https://bitbucket.org/thesheep/micropython-ads1015/
by deshipu
Tue Jan 08, 2019 6:00 pm
Forum: micro:bit boards
Topic: Radio communication (Nordic Gazell)
Replies: 1
Views: 147

Re: Radio communication (Nordic Gazell)

In theory, the "radio" module uses exactly the same protocol as NRF24 does, and it should be possible to have them communicate out of the box. In practice, I've spent several weeks trying to get that working, and failed — I only managed to receive about 1 in 1000 packets on the NRF24 side, and mangl...
by deshipu
Fri Jan 04, 2019 11:05 am
Forum: ESP32 boards
Topic: ILI9225 TFT display driver
Replies: 6
Views: 482

Re: ILI9225 TFT display driver

Roberthh wrote:
Fri Jan 04, 2019 8:39 am
b.t.w.:
"rocket surgery" = "rocket science"[0] + "brain surgery"[1]
dropping: "science brain"
I always visualized it as similar to laser surgery, only with rockets instead of lasers.
by deshipu
Thu Jan 03, 2019 9:17 pm
Forum: ESP32 boards
Topic: ILI9225 TFT display driver
Replies: 6
Views: 482

Re: ILI9225 TFT display driver

Just take one of the existing drivers, take the datasheet, and make it. It's not rocket surgery. You will probably only need to make small modification to the initialization commands, everything else should be exactly the same.
by deshipu
Fri Dec 21, 2018 10:29 pm
Forum: MicroPython pyboard
Topic: OpenMV M7?
Replies: 9
Views: 408

Re: OpenMV M7?

what is the point of PyBoard, other than having a few more I/O channels and pins? The price is one important difference. But generally speaking, they are two completely different systems made completely different people working at different companies. PyBoard tries to be a general-purpose developme...
by deshipu
Wed Dec 19, 2018 8:57 am
Forum: Drivers for External Components
Topic: Drivers for OLED displays and portable GUI
Replies: 6
Views: 921

Re: Drivers for OLED displays and portable GUI

In case anybody finds it useful, I wrote an article about handling the small OLED displays without a library: https://hackaday.io/page/5722