----Useless Box ----

Update: I have quickly added 2 wiring schematics. They are not pretty, but hopefully functional. :-)

info: Some knowledge of Arduino is required for programming and wiring.

Another Useless Box, This one is running Arduino with a Li-ion rechargeable battery.

It is ment to fit the items listed below.

2 x Tower Pro SG90 9g Micro Servo.

1 x 5V Step-Up Power Module Lithium Battery Charger.

1 x D1 Mini NodeMcu.

1 x Li-ion Battery 18650.

2 x Switches.

1 x Led (optional)

Besides that you will need some screws and wires, soldering iron and a gluegun.

I you have an old Powerbank, you can use it for the Step-up/charger and Li-ion cell.

For connections look at the "Useless_Box.ino" or "Useless_Box_Relay.ino" code

it is pretty simple.

i tried to make it as small as possible (10.5 x 7.5 x 4.8 cm)

Optional:

If you have "Servo twitch" the easiest fix is to run the Servo power through a "relay" See BC547_relay_arduino.jpg

and use the "Useless_Box_Relay.ino" code.

If you have any questions, please feel free to ask.

NB. I did not write the code, I adjusted it to my project.

It was done by Vagelis Chantzis. [https://www.instructables.com/id/Arduino-Useless-Box/](https://www.instructables.com/id/Arduino-Useless-Box/)

See my other Things HERE

Print Settings

Printer:

Creality-CR8

Rafts: 

No

Supports:

Yes

Resolution: 

0.2-0.24

Notes:

Support is only needed on the 2 fingers

Category: 3D Printing