The schematic was coffee-stained, photocopied three times, and taped back together with scotch tape that had yellowed since the Clinton administration. It was the only documentation left for the "Project: Oracle" rig, a piece of Cold War surplus that the university physics department refused to throw away because "it still hums."
Ensure your microcontroller uses 3.3V logic. If using a 5V Arduino, you must use a level shifter for the input pins (CSN, SCK, MOSI) to avoid damaging the CC1101 chip. e07-m1101d pinout
GDO0 and GDO2 are often used for interrupts to notify the MCU when a packet is received or sent. External Documentation The schematic was coffee-stained