Search found 328 matches

by mcauser
Mon Nov 19, 2018 2:14 am
Forum: General Discussion and Questions
Topic: RpiTX on a STM32?
Replies: 0
Views: 50

RpiTX on a STM32?

If a Raspberry Pi and a piece of wire can be made into a radio frequency transmitter, can a Pyboard / STM32F4 based board too?
https://github.com/F5OEO/rpitx
https://www.rtl-sdr.com/tag/rpitx/

Anyone else experimenting with software defined radio?
by mcauser
Thu Nov 01, 2018 11:40 pm
Forum: The micro:bit
Topic: AZ3166 IOT dev kit with micro:bit edge connector
Replies: 2
Views: 144

AZ3166 IOT dev kit with micro:bit edge connector

Saw this one on Seeed Studio: https://www.seeedstudio.com/AZ3166-IOT-Developer-Kit-p-2922.html It's a $39 EMW3166 based dev board with 128x64 OLED, RGB LED, IR, temp/humid sensor, pressure sensor, magnetometer, motion sensor, "Security IC", audio IC, headphone jack and mini speaker. What caught my e...
by mcauser
Fri Oct 12, 2018 7:58 am
Forum: Drivers for External Components
Topic: TinyRTC I2C Module DS1307 + AT24C32N
Replies: 13
Views: 1007

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: 1007

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: 1007

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: 288

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: 288

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: 288

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....