the wifi is selling

A solar panel that turns toward the light.

Back to the dashboard

How it's built

Four light sensors sit around the panel. A Raspberry Pi compares them and turns the panel on two axes toward whichever side is brighter.

yes, the wiring is that messy

The tracker with a blue base, solar panel on top and loose jumper wires on the table
blue base, wires everywhere
The tracker with a black base, partway through assembly, next to a glue gun
black base, mid-build

What's in it

Four light sensors

GL5528 LDR x4, ADS1115 at 0x48

The eyes

Two servos

MG90S x2, GPIO 12 and GPIO 13

Moves it

Power meter

INA219 at 0x40

Watts

Controller

Raspberry Pi 5

The brain

Power module

MB102 on a 9 V adapter

Power

Display

SSD1306 OLED at 0x3C

Readout

Wiring

Wiring schematic: the Raspberry Pi 5 header at the bottom, the MB102 power module and INA219 on the left, the ADS1115 in the middle, the pan and tilt servos on top, the solar panel above the INA219 and the four light sensors on the right.

red wires are 5 V for the servos, orange is 3.3 V for everything else