Adafruit 0.56" 4-Digit 7-Segment FeatherWing Display - Yellow Category_Boards/Misc Boards The grooves on the base

The grooves on the base can be used to place your screws and other material

Pololu’s shunt regulators are designed for such scenarios

The table below shows which channel each bit represents

So what makes this so 'Precision'-y

2MB SPI Flash chip

Adafruit 0.56" 4-Digit 7-Segment FeatherWing Display - Yellow Category_Boards/Misc Boards The grooves on the baseOne segment? No way dude! 7 Segments for life! This is the Yellow Adafruit 0. 56" 4 Digit 7 Segment Display w FeatherWing Combo Pack! We also have these combo packs in Green, Red, White, and Blue! 7 Segment Matrices like these are 'multiplexed' so to control all the seven segment LEDs you need 14 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there's a lot of wiring to set up and they take