A small display unit to monitor multimeter readings, connected via my PC software and WiFi.
Inspired by this guy, thank you Sir.:
https://github.com/icrnjavic/OWON-XDM1041_py-util
When testing powered devices with pins that are close to each other, I am always afraid of the test probes slipping, when I look up at the multimeter, and causing a short circuit. The PC software makes it easier, which allows you do only look up a little bit, but there is still a small change that the probes may slip and make a short. With this "remote viewer" device, you can place it right next to you and almost don't need to look away at all.
I made various software versions for this. One version uses a standard 16x2 LCD and a small ESP-01. The other version uses a small "0.91 OLED and the 3rd version uses the CYD (Cheap Yellow Display), which have a "2.4 TFT screen. It can also run on any 3.7V battery, which allows it to be small and completely wireless.
First you need to change the Arduino sketch, to use your own WiFi credentials.
After loading it onto the ESP, get the device's IP address, it will print on the serial monitor.
Then use this IP in the GUI_RV.py file.
// ESP8266 configuration:
ESP_URL = "http://xxx.xxx.xxx.xxx" # Change this to your device's IP address
You need Python, install the requirements:
pip install -r requirements.txtTo run the gui:
python3 GUI_RV.py