Sending text messages with visible light communication or LiFi – Pi to Arduino
I like the idea of sending data via visible light. In general, Li-Fi (Light Fidelity) and VLC (Visible Light Communication) are heavily discussed at the …
Cyclic Redundancy Check in C code
I plan to build a transmitter and receiver station which is able to transmit data with the help of light signals (“Visible Light Communication” – …
Magnetic clamp for strong neodym magnets
There are often huge round magnets in different colors for magnetic boards, but unfortunately they usually don’t hold properly. That’s why I ordered so-called super …
Step-down Modul DC-DC LM2596S
I have recently constructed a housing for a step-up and had good experiences with it. However, since I also need the other direction, which is …
Step-up Modul DC-DC LM2587S
I bought a battery vacuum cleaner, but unfortunately after two weeks I could not find the charging adapter anymore. The specified voltage for the power …
How to program a highly precise timer in C for Linux
I wanted to program a timer in C for my Raspberry Pi, which executes precise work instructions for 1 ms as well as for 0.1 …
Arduino Timer Interrupts – How to program Arduino registers
If you want to achieve a regular time interval with the Arduino you can simply use the delay() function. This will pause the program of …
2 adjustable axis – CAD Design
I was looking for a stand to hold an optical mouse board for measuring the path of a wheel. Unfortunately I did not find a …
7 Inch Touchscreen Design Case
This is a 7 inch touchscreen Design Case. The monitor housing is multifunctional and offers 6 positions. For mounting on walls or devices a VESA75 …
Round Edge Cookie Cutter – Construction and 3D print
Ring is ring? One could think so. But it is not that simple. A simple ring didn’t solve my problems. I needed a cookie cutter …