Search found 20 matches

by djipey
Fri Sep 11, 2020 7:15 pm
Forum: Other Boards
Topic: GT832E_01 (NRF52832): unplug/plug FTDI adapter to get prompt, why?
Replies: 0
Views: 894

GT832E_01 (NRF52832): unplug/plug FTDI adapter to get prompt, why?

Hello, I finally managed to flash a GT832E_01 board. For the original post describing the board and what I tried, see here: https://forum.micropython.org/viewtopic.php?f=12&t=8924. I'll add the final procedure there if someone is interested. However, now that the board is flashed (and works, I'll co...
by djipey
Thu Aug 27, 2020 6:55 am
Forum: Other Boards
Topic: [M5stack atom] power board custom solution
Replies: 0
Views: 933

[M5stack atom] power board custom solution

Hi, I recently bought a M5stack atom "board": https://m5stack.com/collections/m5-atom/products/atom-lite-esp32-development-kit I want to play with it and disassemble it for other projects, I'm not interested with the enclosure and the M5 ecosystem. However, the M5 stack atom contains a pico board th...
by djipey
Fri Aug 21, 2020 6:04 pm
Forum: Other Boards
Topic: Flashing a GT832E_01 (NRF52832): where to start?
Replies: 0
Views: 982

Flashing a GT832E_01 (NRF52832): where to start?

Hello, I recently bought a few of these little guys: https://www.aliexpress.com/item/32845674676.html And I would like to put micropython on them. The chip is the classic NRF52832. They have a CORTEX-M4, 512K FLASH and 64K RAM. It should be more or less ok for micropython and some basic code. I sold...
by djipey
Thu Jun 18, 2020 10:16 am
Forum: ESP8266 boards
Topic: ESP01: power I2C sensor from board instead of battery
Replies: 0
Views: 702

ESP01: power I2C sensor from board instead of battery

Hi, I recently made a small setup to report temperature, pressure and humidity every 10 minutes. The system is made of: - ESP01 - BME280 (it's an I2C sensor) - Battery (CR 123, lithium). This battery provides a ~3.3V current during its lifetime, no need to level the voltage I made some hardware modi...
by djipey
Thu Jun 11, 2020 4:11 pm
Forum: Other Boards
Topic: Simple cheap small board: NRF52 ?
Replies: 4
Views: 1076

Simple cheap small board: NRF52 ?

Hi, I know that similar questions were asked before, but after browsing quite a lot of threads on the forum, I couldn't find exactly what I need. In short, I would like to find a board that matches all these conditions: - cheap (< 10 €) - has bluetooth - small (something like 20x30 max) - has 2.54 m...
by djipey
Sun Mar 22, 2020 8:03 am
Forum: ESP32 boards
Topic: Waveshare eink 2in7 screen flockering after power cycle
Replies: 1
Views: 522

Waveshare eink 2in7 screen flockering after power cycle

Hi, I managed to fully use a Waveshare eink screen 2in7. I use this driver: https://github.com/mcauser/micropython-waveshare-epaper/blob/master/epaper2in7.py. I use to display information from sensors: temperature, humidity, etc. This is how I setup the screen: def setup_screen(): # SPIV on ESP32 sc...
by djipey
Wed Jan 22, 2020 8:36 pm
Forum: ESP32 boards
Topic: ESP32S and adapter board
Replies: 11
Views: 2118

Re: ESP32S and adapter board

Perfect, thank you for your detailed reply, you answered just before I edited my last message :) I didn't know about the response time of the capacitors, but it makes sense. One more question: why is the ESP32 so much more complicated than the ESP8266 ? I don't need all these peripherals to use an E...
by djipey
Wed Jan 22, 2020 8:22 pm
Forum: ESP32 boards
Topic: ESP32S and adapter board
Replies: 11
Views: 2118

Re: ESP32S and adapter board

Thank you, I finally managed to boot and flash the board, thanks to your procedure. I didn't use the buttons on the adapter board, just the side connections and two 10k resistors on the breadboard. Once flashed, I was able to access the python prompt and do some stuff, but as you mentioned, as soon ...
by djipey
Sun Jan 19, 2020 12:45 pm
Forum: ESP32 boards
Topic: ESP32S and adapter board
Replies: 11
Views: 2118

Re: ESP32S and adapter board

Ok roger that, my adapter board is crap. I'll order the one you suggested. That said, I'd like to understand what I did wrong. I understand the pull up resistors are there to ground the EN and GPIO0 pins when the buttons are pressed. I tried to connect these pins directly to the ground (I just used ...
by djipey
Sat Jan 18, 2020 9:20 am
Forum: ESP32 boards
Topic: ESP32S and adapter board
Replies: 11
Views: 2118

Re: ESP32S and adapter board

To get the buttons working right? But I could potentially deal without them. The adapter boards I have for my ESP8266 don't have any buttons.