This project is the continuation of the “Build a working display case” project in our October 2024 issue. This second part details the physical and software infrastructure Randy built to control his ...

Pressing the self-test again takes you to the switch test. Switches that are stuck on will be identified by number in the displays, like the original test. However, the PTU allows up to four stuck ...

C ‘common sense’ is that the switch/case answer is both faster and makes more compact code because compilers tend to convert these into a jump table. However, the Arduino compiler tends to convert ...

When reed switch is opened, pin 2 of Arduino goes high with the help of the pull-up resistor R2, and the alert signal is available through the piezo-speaker PZ1 (not an active piezo-buzzer). At the ...

The Arduino Uno board detects the tattoo artist’s gestures via a distance sensor, and signals the machine with an on or off output. Watch this video on YouTube. Source: AH : WTech ...

You'll definitely need a few components to build this project, most notably the Arduino control board that'll serve as the brains of the system. This project uses a $30 Arduino Uno R3, an RGB LCD ...

This machine uses a three-phase Dahlander motor, which has three operation modes: stop, half speed, and full speed. The motor uses a special mechanical switch to select the operating mode.