Arduino PCM Audio Primer
In this primer, we’ll learn how to play an audio file thru Arduino without using any external modules. Here we’re going to use the pulse code modulation (PCM) audio technique with the help of a […]
KA2284 LED Level Meter v1
It’s not always necessary to have a costly microcontroller to make a fancy sound level meter or battery level meter. Of course, there’re still a lot of old ways to try those ideas. A good […]
Jio M2S Router & Battery Hack
Jio M2S router is a sleek and stylish portable device useful to connect up to 10 Wi-Fi-enabled devices. JioFi allows you to connect up to 32 devices, and you can carry JioFi everywhere you go. […]
BPW34 Tiny Solar Cell – Quick Revision!
Some small experiments on a cheapo soil meter I did recently remind me of the nostalgic photodiode BPW34. So, I think this is the right time for a quick review. Well, let me go further […]
Analog Audio Visualizer LEDs
I prepared this post in a hurry to help you to quickly design and build an analog audio visualizer using common light-emitting diodes. It’s not the first time I built a simple analog audio visualizer […]
Arduino Audio – Refined Primer
At this time, we’re going to generate various sounds using an Arduino microcontroller! We’ll initially make sound using a regular piezoelectric buzzer which makes use of a material that has piezoelectric properties. When a material […]
12V SLA Battery Charger Guide
Recently, I had the opportunity to test the internal electronics of several popular Router UPS devices. Honestly, most of them are useless products and will make the router sick within days. Oh, that’s another story, […]
I2C LED Knight Rider
I have already posted two Knight Rider and Larsen Scanner LED projects online. You can go through these to access them Arduino Knight Rider Arduino Larson Scanner. Or you can buy yourself an inexpensive Knight […]
Tricolor Temperature Display
Quite recently I got a stainless-steel vacuum flask with a digital temperature readout integrated on its top lid. When I touch the top of the lid it simply displays the inside temperature of the container […]
Poor man’s Blow Switch
You may often see the musical instrument Melodica on stage shows. From Wikipedia (https://en.wikipedia.org/wiki/Melodica) melodica is a small, light, and portable free-reed instrument similar to the pump organ and harmonica. It has a musical keyboard […]