
The SI4735 is a 3.3V part. If you are using the Arduino Mega 2560 (5V), you have to use a 5V to 3.3V converter. I am using the SparkFun Level Translator Breakout - PCA9306.
ESP32 and Si4735 are 3.3V part. So, you do not need a level converter.
More recent videos about this project:
"Si4735 All in One Receiver running on Arduino Pro Mini 3.3V (8MHz) and TFT Display":
"Si4735 All in One Receiver with TFT Touch Screen":
#si4732 #si4735 #arduino #shortwave #ssb #receiver #radio