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In Development: An all surface-mount Universal Digital VFO/BFO Module a quarter the size of the through-hole versions currently available. A Raspberry Pi RP2040 microcontroller and Si5351A clock generator will share the same small PCB and, like its bigger cousins, the UDVBM-2 will feature a filtered power supply and all the digital-bus access (I2C, SPI, 1-Wire) and peripheral connections.
The RP2040 can be programmed in either Arduino C/C++ or MicroPython. It operates at a clock speed of 133MHz and has 2Mbytes of flash program memory. The UDVBM-2 will be programmable through its USB-C connector. For the current schematic diagram, click on the link below.
Schematic Diagram (PDF)