Search found 17 matches

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: 248

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: 1
Views: 302

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: 330

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: 1306

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: 1306

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: 1306

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: 1306

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.
by djipey
Fri Jan 17, 2020 10:39 pm
Forum: ESP32 boards
Topic: ESP32S and adapter board
Replies: 11
Views: 1306

Re: ESP32S and adapter board

I might be interested by the adapters you mentioned if they are plug-n play, without soldering.

In the mean time, I would like to try and make my adapters work. Do I need the resistors?
by djipey
Fri Jan 17, 2020 8:41 pm
Forum: ESP32 boards
Topic: ESP32S and adapter board
Replies: 11
Views: 1306

ESP32S and adapter board

Hi, I'm trying to upload micropython on my ESP32 WROOM (the bare chip). I got it from here, with the adapter board: https://www.banggood.com/ESP32-ESP-WROOM-32-IoT-Wifi-WLAN-BLE-ModuleESP-32S-Adapter-Pinboard-Converter-Board-p-1468284.html?rmmds=myorder&cur_warehouse=CN I soldered the chip on the ad...
by djipey
Tue Jan 14, 2020 9:09 pm
Forum: Programs, Libraries and Tools
Topic: umqtt.robust: ensure that broker received the message
Replies: 10
Views: 2367

Re: umqtt.robust: ensure that broker received the message

By the way, I never replied to the thread. I found a way to solve my problem: with uping and a nightly firmware (uping needs a recent implementation of websockets to work properly), I can first ping the broker. If a ping can reach it, I send the data. If not, I try to reconnect to the network. It wo...