| This radio-controlled FM alarm clock syncs time automatically using a 433-MHz signal from a central time server. Its LED display adjusts to...
| This radio-controlled FM alarm clock syncs time automatically using a 433-MHz signal from a central time server. Its LED display adjusts to...
| This ATtiny85-based voltage-to-frequency converter isolates measurement grounds between solar panels and batteries. It converts analog volta...
| This DCF77 time server pairs a DS3231 RTC with a PIC12F1840 to decode DCF77, output a TTL time signal via optocoupler, and rebroadcast time...