Simple Electronics Projects

29/11/2023

ws2812b programmed on microchip microcontroller pic18f25k42 with input from a microphone through opamp lm324. It is supposed to response to audio frequency.

17/08/2022

Was playing the last night before dinner, end up making this with this old .

19/12/2021

Reindeer with aluminium wire and Christmas lights.

07/09/2021

RGB LEDs WS2812b with PIC16F18313 through it's CLC peripheral. The LEDs pattern occupies the whole ROM - 2KB.

28/05/2020

Non Contact AC detector.

Here is a simple circuit implementation for detecting AC voltage by cascading a couple of transistor. It is a very simple circuit and is available all over the internet.
Now a days it seems most multimeter come with this functionality. I build this circuit back in September 2019 before I got a multimeter with this functionality. And there are reputable brands that build these type of devices (far better). But the circuitry is so simple and I believe it is an important tool for anyone working with electrical wiring (repairs).

27/05/2020

How to convert old laptop web cam to USB camera.

You would need an old dead laptop with a we**am and a USB type A, preferably ver 2 for easier wiring. I have an old laptop which I have been using for close to nine years till its inbuilt graphics failed last year. I haven't disposed it beause I'm trying salvage as many components from it as possible. So, the procedure is pretty straight forward. Take out the camera module, which is located at the top of the laptop screen. In my case there are six wires, but we will need only four power and data. Check the video below for more

03/05/2020

18/12/2017

LEDs inside coffee jars, hanging by the Mulberry tree glittering through the December nights.

The whole thing consumed around 3.2 watts.

26/09/2017

Testing of matrix led.