somebox / solar-lamp

A colorful 3d-printed solar desktop lamp with light level sensor and animations

Solar Lamp

Case and firmware for a solar lamp:

• ~6w (9v) Solar Panel
• CN3791 MPPT solar charge board (https://youtu.be/kEttqWJrdww?si=J3NK1Z9TAiQDuugP&t=113)
• 18650 Li-Ion 3.7v battery
• Arduino ItsyBitsy 3v (https://www.adafruit.com/product/3675)
• A strip of NeoPixels
• BH1750 I2C light sensor (lux)
• A single pushbutton

The firmware does the following:

• The light turns on automatically when it's dark
• Pressing the button for more than two seconds will turn the light off
• Tapping the button will turn the light on, if it's off

Tapping the button while the light is on will cycle between four different animations. The default animation is just a warm-white light.

The 3d Model:

STL files used for 3d printing are included.