“This project is based on a 20X2 PICAXE Microcontroller. It uses a programmable timing circuit to allow the user to program repeated automatic plant watering cycles by controlling a small electric pump that feeds the plant water with 1/4 ” tubing. The water reservoir can be anything you like such as a plastic bottle or rain barrel. For this particular …

“Sensors are the best thing to get started with DIY electronics, you can get a wide variety of sensors, each suitable for one or more tasks. The arduino is compatible with a variety of sensors and I’m going to show you how to build different sensors to use with the arduino boards. To start of with I’m going …

“A low cost, open-source, universal-like remote control system that translates the user’s head poses into commands to electronic devices. The project presents a proposal of an open-source, low cost universal remote control system that translates user’s head poses into commands to electronic devices. In addition, a proximity sensor circuit was combined to radio-frequency modules in order to act …

“Bats come out at night and can be difficult to spot—but with this bat detector, you will be able to track them down! While some bats do make audible clicks, most produce inaudible clicks that are between 20kHz and 200kHz. Since vision is severely restricted at night and in caves, bats rely on echolocation, which works in a nearly …

“Despite sinks being critical to hygiene, manual taps are still pretty nasty and so newer “automatic” sinks are used in many public spaces. In this DIY Hacking project, we will create a simple IR water dispenser!”

“If you, like most, are irritated by fly insects or have a fear of being stung by a spiteful wasp then this circuit is for you. In this project, we will create a circuit that can detect flying bugs that make that distinctive buzz!”

“Here I demonstrate how to use a single microcontroller pin to generate action-potential-like waveforms. The output is similar my fully analog action potential generator circuit, but the waveform here is created in an entirely different way. A microcontroller is at the core of this project and determines when to fire action potentials. Taking advantage of the pseudo-random number generator (rand …

“Coilgun is like a slingshot from the future. Whilst it’s kind of useless it’s a lot of fun to play with. I’m going to show you how to build one without using huge and expensive capacitors. My design powers coils directly from batteries and yes I mean coils since you can add as many as you want …

“The digital age has seen a tremendous transformation ranging from the rapid increase in hard drive space and the speed of processors. However, some computer users in the past had to rely on more ancient technology to save and load files. In this project, we look at a simple analog mixer that is used to improve the quality of recorded …

“Working with sensors makes electronics better and easy to work with, there are thousands of sensors to choose from and designing sensors would make for cool DIY projects.This instructable will be a part of a series of instructables in which I show you how to build sensors compatible with most microcontroller you can find. In the last two instructables …