GPSDO

Veron A32 GPSDO project

Burn the bootloader and upload the firmware using an USBasp programmer.

Download breadboard-1-6-x.zip from ArduinoToBreadboard Create a folder named hardware in the Arduino sketchbook folder and extract the breadboard folder into it.

Make sure USBasp is using driver libUSBK driver which can be installed using Zadig. I didn't verify the use of other USB drivers.

Using Arduino IDE v2.2.1

• Tools → Board → breadboard avr (In Sketchbook) → …
• Tools → Programmer → USBasp
• Tools → Burn Bootloader

Download AVRDUDESS

• MCU ATmega328P
• Programmer USBasp
• Flash, select .hex file → Go
• https://www.engbedded.com/fusecalc/

OSC5A2B02
Possible housing