MicroPython Forum

Judging from these schematics, another thing you could try testing continuity between the battery terminals and the DS1307 IC
https://robotdyn.com/pub/media/0G-00005 ... ATALOG.pdf

Pin 3 Vbat
Pin 4 GND

Is it the same RTC module as in the photo above?
I’ll give it a try with my D1 mini pro tonight.

What’s the voltage on your coin cell?

Normally people use pins D1 and D2 for I2C. D1 GPIO5 for SCL D2 GPIO4 for SDA There’s a problem though. I2C requires pull up resistors on the SCL+SDA pins. You’ll need some external 10k resistors connecting both to 3V3. “Pulling them up” instead of leaving them floating. There is a trick you can use...

Also, have a read of this thread: viewtopic.php?f=14&t=1422

I'm going to assume you are using a 1602 LCD with one of these I2C backpacks: https://www.aliexpress.com/item/LCD1602-I2C-LCD-1602-module-Blue-screen-IIC-I2C-for-arduino-LCD1602-Adapter-plate/32651314933.html Git clone or download the repo: https://github.com/dhylands/python_lcd Open the lcd folder....

On my machine (Macbook Pro), the D1 mini pro shows up on these ports: * /dev/tty.wchusbserial1410 * /dev/tty.wchusbserial1420 The latest D1 mini pro uses the CH304G usb-serial chip. Previous versions were using the CP210x chip and were accessible via: * /dev/tty.SLAB_USBtoUART Same as the now retire...

It works! Thanks @pfalcon + @SpotlightKid

I'm able to get/post data to/from Google sheets and display on a Nokia 5110 + ESP8266.
I'll polish the code and share a tutorial soon.

The 64x32 one you linked to uses a HUB08 interface. I couldn't find much information on it. Alternatively, you could chain a bunch of MAX7219 (SPI) based 8x8 LED matrices to form a 64x32 panel (32x individual 8x8 modules) Here's a library I wrote for them, which I've combined to form a 32x32 panel (...

Make a get request using urequests.py from micropython-lib Copied this file to my board: https://github.com/micropython/micropython-lib/blob/master/urequests/urequests.py import urequests r = urequests.get('https://script.google.com/macros/s/(token)/exec') which redirects to: https://script.googleus...