Tag: build

MacroKeys – A small side keyboard

bitlischieber by bitlischieber

Some key strokes are hard to mind or just inconvinient. But thanks of USB capable Arduino compatible boards, you can make your very own customized little side keyboard.

Software on my Github account: https://github.com/bitlischieber/MacroKeys/

File for the case on my Thingiverse account: https://www.thingiverse.com/thing:2953199

Partlist (or, what i used):

1 x Teensy 3.1 board
1 x USB micro  cable
12 x Switches
12 x Keycaps
12 x Standard diodes (e.g. 1N4148)
Pieces of wire

Mailbox LED light

bitlischieber by bitlischieber

Except from luggage trunks there are other compartments wich are quite dim: Mailboxes.

In my various electronics survival boxes I found the components to solve this issue: Battery holder, Reed Relais, an old Magnet, Boost DC/DC conveter from AliExpress (LiPo Bat. to 5V USB-A Connector) and a 12 V LED strip. The LED strip had no drivin circuit on it an the forward voltage was below 5 V. So a modification from 12 V to 5 V was by changing the current limitting resistor easy. To connect the batteries to the circuit I used the Reed Relais and the Magnet. The Magnet is attached in the mailbox inner top using adhesive. The Reed Relais ist mounted on the flap by adhesive as well. Pulling the flap upwards activates the light an let you check for post in the dark :-).