WSPR multiband beacon with si5351a and nodeMCU board for time sync via NTP
Simply connect your si5351 module to power supply (3,3 V) and I2C of your nodeMCU. Usally SCL goes to D1, SDA to D2 on nodeMCU, but verify on the schematic of your modules!
WSPR multiband beacon with si5351a and nodeMCU board for time sync via NTP
C++GPL-3.0