TopTip

Inspired by a video on LinkedIn: https://www.linkedin.com/posts/interestingengineering_diy-money-saver-using-arduino-ugcPost-6778642933374586880-2k7G/

**Bill of Material:**
- 1 x Arduino Nano: https://de.aliexpress.com/item/32267271986.html
- 1 x Extension Board: https://de.aliexpress.com/item/32933662259.html
- 1 x Servo: https://de.aliexpress.com/item/1005002485404471.html
- 1 x Mini USB-Kabel 0.3m: https://de.aliexpress.com/item/32918461237.html

*Variant with Battery*
- 1 x Batteryholder 4 AA: https://de.aliexpress.com/item/32818907820.html
- 1 x Switch MTS-101: https://de.aliexpress.com/item/33012530737.html
- 4 x AA Battery...

*Variant with Accumulator*
- 1 x USB Powerbank…

*General Stuff:*
- Two core wire…
- 10 kΩ Resistor: https://de.aliexpress.com/item/33013181098.html
- Copper Tape: https://de.aliexpress.com/item/33047300537.html

**Assembly**
1. Cut box with a Lasercutter (use SVG)
2. Fold and glue the parts
3. Attach the servo to the lid with a gl