Laptop Security Alarm
Want to keep your laptop/notebook securely? Introduced here is the idea of a simple yet effective laptop/notebook antitheft alarm device with a security cable that fits in the USB port of the laptop/notebook. The security […]
Hearing Aid DIY Kit
I was following some sellers on the internet, searching a lot more, to get a few difficult-to-get components for some other electronics projects I was planning, and then stumbled haply on a do it yourself […]
Quick Servo Tester Nano(v3)
Here’s a nice little project of a quick servo tester with Arduino Nano (v3) microcontroller board. Another key part in this basic project is a cheap Arduino Nano(v3) expansion shield. The hardware setup is extremely […]
Data Slicer Primer
Any electronics experimenter can connect an analog sensor to a microcontroller and run it with the help of a piece of code. Sometimes there’s a reason to provide a clean digital signal input to the […]
Pulse Drop Detector
In this episode, you can see a simple yet reliable idea to build your own pulse drop detector circuit which is nothing but a configurable dual-monostable setup tailored for some distinct real-world applications. The given […]
Arduino Tachometer
Here’s a simple Arduino Tachometer project for measuring and displaying speed of rotation. You can find similar projects everywhere on the web but this one has some unique features. First off, the idea is based […]
LiFePO4 Battery Charger
Perhaps, the most ideal rechargeable battery chemistry for industrial electronics today is the LiFePO4 (lithium iron phosphate) battery. This newer type of lithium solution is inherently non-combustible and best known for its strong safety profile […]
Lady Beetle LED
Lady Beetle LED is nothing but a little automatic model toy light, may be a nice Xmas gift for your loved companion. Here’s its tried and tested circuit diagram: As you can see, the circuit […]
USB to DMX Interface Adapter/Converter (v1.0)
This is another revision of my USB to RS485 Converter circuitry which performs the USB (Universal Serial Bus) to two wire RS485 (two-wire half-duplex) and vice versa. This time the design focus is much more […]
Little LED Night Marker (v1)
Little LED Night Marker introduced here is a simple circuit based on the common and cheap dual-operational amplifier LM358. The night marker is in fact a safety device designed to mount near obstructions in unilluminated […]