Frequency Source VK5TM Crystal Substitute Replace your crystal oscillators Digistump Arduino Release 1.6.7 Si 5351 Data Sheet ADM 9850 Data Sheet Pic-a-Star Si5351 Local Oscillator Module Building a clock generator Arduino breakout board for RF and, microcontroller pr SI 5351 Clock Board ATtiny25/V / ATtiny45/V / ATtiny85/V DATA SHEET How to Use Arduino DDS Frequency Signal Generator AD9850 Timing – ClockBuilder Pro Software BOMAR Crystals ZL2PD DIGITAL VFO AT tiny 85 Tutorial Skyworks S i 5 3 5 1 A / B / C – B – Data Sheet VK5DJ synthesiser: a programmable crystal Arduino IDE 1 Installation (Windows) Digispark Attiny 85 With Arduino IDE F4HTB – Attiny85, SI5351 via IDE ARDUINO I2C – Inter-Intergrated Circuit Protocol
There was a steep learning curve for me using the Digispark AT Tiny 85. The ATTINY85 is a micro-controller used to store and send frequency data to the SI 5351 Clock / Oscillator. A software package called Arduino IDE is used to program the ATTINY85. (So far I have been unable to use Win11to program the ATTINY85 but Win 10 Worked OK). The reason for a crystal replacement project is that made to order crystals for communications radios are hard to find. In the US the only source I have found is BOMAR CRYSTALS – http://bomarcrystal.com/.