A digital-controlled power supply based on the Atmega328P.

• 2 independent (floating) channels
• 0 - 24V @ 0 - 2A
• Full 10-bit resolution for voltage adjustment
• Full 8-bit resolution for current adjustment
• Digitally-controlled analog circuitry to have fast feedback action
• Software calibration for the best accuracy
• Real-time display of measurements and setpoints

• Modular C program
• Several channels can be added, hardware permitting (external ADCs/DACs etc)
• Immediate and easy GUI using a 2-line display
• Encoder with smooth control of setpoints via a logarithmic acceleration scale
• Debug and Development Simulator PC application

• 1x atmega328p (master); 1...n atmega328p (slaves)
• 3 HW timers (1 for system clock; 1 for voltage PWM; 1 for current PWM)
• 6 ADC channels (1 voltage measurement; 1 current measurement; 4 auxiliary)
• Buffering op-amps (final desing yet to be defined)

To ensure a complete channel isolation the system is composed of a master node which handles the encoder, the LCD and the communication with the slaves.