MyCreations

 based on my newest KeyWrite, i made a LedTester. when building a pinball machine or jukebox, i always have the need to take a teensy and solder a connector to it to test the led with a testprogram. this thing is now a dedicated ledtester which is ready for all the led projects.

 

 When i am making my custom microcontroller, the chip has to be flashed one time with ICSP. With this tool i can do that without soldering on cables. After that i can program the microcontroller with arduino ide with usb. https://www.thingiverse.com/thing:6831010

I am very happy, i made my own custom micro controller and have a working prototype now. 3 to be exact. It has the Atmega32u chip on it, like the arduino leonardo. I wanted that chip because it can act as a hid device and i need that for my keywrite.

 

 added the white wheel in the holes.

 a simpler version with 6 buttons and no sd card and a Teensy 2.0. https://www.thingiverse.com/thing:6761422

 i have made several version of this tool. For the newest one, i have taken a keyboard apart. put in an usb hub. There is just the regular USB cable that goes to the PC and connects the keyboard, the KeyWrite and an micro sd card reader. The KeyWrite reads the encrypted passwords from an SD card. The masterpassword to decypher all the passwords is hardcoded on the device. I use a Teensy 4.1 with a screen, buttons and rgb leds, everything is connected to a custom pcb. I even made a stand for it to connect the KeyWrite without a keyboard. and a video in action   and here are some pictures of previous versions.