Welcome to my Lab PSU project, which is based on a pair of BD139/TIP3055 Darlingtons and the Teensy 3.5 (3.6 should work as well).
This project has been heavily inspired by the original µSupply project by Dave Jones from the EEVBlog.
Link: https://www.eevblog.com/projects/usupply/
Specs:
0 - 16.384V output controllable in 1mV steps
0 - 4096 mA output controllable in 1mA steps
Around 0.1% accuracy due to high accuracy components
16 Bit DACs (DAC8311)
High precision voltage reference for the DACs (REF5040)
16 Bit ADCs (ADS1115)
Low Ripple, Low Noise
25kHz PWM/temperature controlled Fan output for standard PWM capable FANs
One Board solution (toroidal transformer not onboard)
Optional Front Panel for Display, rotary encoder, button and LED mounting
Fast UI thanks to Teensy's 120 MHz frequency
Header for ESP8266, ESP32 or basically any other UART compatible device, including 3.3V and GND as well as two I/O pins (one PWM capable)