Content for Perfboard

StickPi - a Raspberry Pi Zero W with GPIO buttons and an e-paper display

“I always wanted to have a sturdy and rigid Raspberry Pi that is mobile and as small as possible. Recently I designed a Raspberry Pi 3 plus 5 inch display, built-in keyboard and a battery / charging circuit. It’s nice …

Universal Internet of Things

“Internet Of Things will soon become a $6 trillion dollar business. But installation of IOT into existing houses would require massive amount of work. Drilling walls, check for proper grounding, replacing entire lights and fans, etc. But is there a …

Arduino Energy Meter - V2.0

“Hello friend, welcome back after a long break. Earlier I have posted an Instructables on Arduino Energy Meter which was mainly designed to monitor the power from the solar panel (DC Power) in my village. It became very popular on …

ArduMeter: an Arduino Based Multimeter (Sort Of)

“Well I had been working on this simple, but sometimes useful meter based on Arduino Nano. It can read battery voltages to 10% of actual value (as long as it is below 10V), it can measure resistance quite well (better …

CO2-meter: from prototype to meter-in-a-box

“I spent too much time in too small, too busy meeting rooms, discussing about who knows what and too many times I felt the oxygen was letting me down. Was there too little oxygen? Or too much carbon dioxide? Or …

Joule Thief Circuit How to Make and Circuit Explanation

“A Joule Thief is a simple voltage booster circuit. It can increase the voltage of a power source by changing the constant low voltage signal into a series of rapid pulses at a higher voltage. You most commonly see this …

Aquarium Light PWM With Arduino

“I have recently converted my aquarium lights from fluorescent lighting to LED lighting and I have decided to try and simulate a natural environment where light gradually increase from dawn till midday and then decrease till dusk. At night there …

2-Year Ultra Low-Power LED Flasher

“In this Instructable, I am going to try and explain, step by step, how I designed this Ultra Low-Power LED Flasher with the following specification: LED flash rate 1 flash per second LED on-time of 5ms At least 2 years …

Arduino Air Bonsai Levitation

“It’s been a long time since my previous tutorial, my work is quite busy and I spend less time on Instructables. This time is a project that I like very much since my first saw it on Kickstarter: Air …

Iot123 - I2C Brick Prototyping Slave

“While developing the latest ASSIMILATE ACTOR (KY-019 RELAY), a generic dev board was thrown together to save me some extra work at my desk. It has the standard pinouts of the I2C IOT123 BRICK, but allows custom connections to …