Search found 324 matches

by mcauser
Fri Oct 12, 2018 7:58 am
Forum: Drivers for External Components
Topic: TinyRTC I2C Module DS1307 + AT24C32N
Replies: 13
Views: 568

Re: TinyRTC I2C Module DS1307 + AT24C32N

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
by mcauser
Fri Oct 12, 2018 5:44 am
Forum: Drivers for External Components
Topic: TinyRTC I2C Module DS1307 + AT24C32N
Replies: 13
Views: 568

Re: TinyRTC I2C Module DS1307 + AT24C32N

Is it the same RTC module as in the photo above?
I’ll give it a try with my D1 mini pro tonight.
by mcauser
Thu Oct 11, 2018 2:51 pm
Forum: Drivers for External Components
Topic: TinyRTC I2C Module DS1307 + AT24C32N
Replies: 13
Views: 568

Re: TinyRTC I2C Module DS1307 + AT24C32N

What’s the voltage on your coin cell?
by mcauser
Tue Oct 09, 2018 11:18 pm
Forum: Drivers for External Components
Topic: LCD 2X16 I2c on ESP32
Replies: 6
Views: 170

Re: LCD 2X16 I2c on ESP32

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...
by mcauser
Mon Oct 08, 2018 3:08 am
Forum: Drivers for External Components
Topic: LCD 2X16 I2c on ESP32
Replies: 6
Views: 170

Re: LCD 2X16 I2c on ESP32

Also, have a read of this thread: viewtopic.php?f=14&t=1422
by mcauser
Mon Oct 08, 2018 3:06 am
Forum: Drivers for External Components
Topic: LCD 2X16 I2c on ESP32
Replies: 6
Views: 170

Re: LCD 2X16 I2c on ESP32

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....
by mcauser
Fri Sep 28, 2018 3:25 am
Forum: ESP8266 boards
Topic: flashing issue with wemos d1 mini pro (esp8266 board)
Replies: 1
Views: 119

Re: flashing issue with wemos d1 mini pro (esp8266 board)

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...
by mcauser
Wed Sep 26, 2018 5:35 am
Forum: General Discussion and Questions
Topic: [SOLVED] urequests + redirects
Replies: 4
Views: 169

Re: urequests + redirects

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.
by mcauser
Tue Sep 25, 2018 2:59 am
Forum: Drivers for External Components
Topic: 64x32 led matrix driver
Replies: 3
Views: 188

Re: 64x32 led matrix driver

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 (...
by mcauser
Mon Sep 24, 2018 1:16 am
Forum: General Discussion and Questions
Topic: [SOLVED] urequests + redirects
Replies: 4
Views: 169

Re: urequests + redirects

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...