Uses an esp32-OLED board and CC1101 module to sniff & display 300, 400 & 800 ISM frequencies
This project is based on smolbun/CC1101-Frequency-Analyzer code but instead of sending it to the serial port, it displays it on an ESP32/OLED module. The ESP32/OLED module is the HW-724 from Shenzhen Hongwei Microelectronics Co and purchased from Aliexpress. The program displays 3 rows of frequency/strength readings and then clears the display and starts again for the next 3 readings, if any. new rows are added if the signal strength exceeds the hard-coded value currently set at -75dBm
I actually created this as a quick test for my CC1101 module as it was not receiving signals very well.