Half Life USB HEV charger

DIY Arduino based USB charger with sounds from the Half Life game. This project is inspired by you tube video from Anon Amos. Video of this charger is here:

https://www.youtube.com/watch?v=Dw1A0nuBhOs

Mechanical part:

Case was printed from the orange, silver, black, white and graphite black PLA. Design is made for colour print by changing the filament on one extruder 3d printers with small bed. So you not need some special 3d printer. Parts are pasted together by super glue. Pins from the filament are helping make accurate parts connection.

I made table and wall version with top mobile place. Wall version have holes for wall bolts and power cable from the bottom side.

Electronic part of the project:

Project is based on Arduino NANO. All informations about used modules you find in included PartList.txt and wiring on the picture. For the success program compilation and upload you must import these libraries:

Ucglib

Adafruit_INA219

Adafruit_BusIO_Register

MP3 module:

Included MP3 files upload on the microSD card and insert to the MP3 module. Do not change file names. There is one more sound file which you can use for charging finish if you like it. For this you must modify the program.

In the assembling pictures you can find some differences from the reality because I make some designs changes during documentation. Wiring diagram is correct so follow it.

1.11.2020

Add USB C cable holder

15.11.2020

In some cases can happen fart sound from MP3 module during power on. Add modificated circuit drawing Wiring_MP3_fart_issueMod.jpg for this cases. After this modification problem fix but charger is not compatible with chargers QC2 + and need only 5V.