Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

Jean] wrote into the tips line (the system works!) to let all of us know about his hacked and hand-wired C64 keyboard, a ...

FastMap replaces the Arduino map() function which does integer mapping. The result of integer mapping is that the (internal) division truncates and looses precision. Another problem possible problem ...

The I2CKeyPad library implements the reading of a 4x4 keypad by means of a PCF8574. Smaller keypads, meaning less columns or rows (4x3) can be read with it too. Since 0.3.2 the library allows a 5x3, ...

Abstract: The main objective of this research work is to develop a vehicle that will be assisted with solar energy and will identify the location of victims in the earthquake-affected areas. This car ...

In this video, I show you how I built a custom puzzle box powered by Arduino with a fully wooden enclosure and components.

It’s relatively easy to understand how optical microscopes work at low magnifications: one lens magnifies an image, the next magnifies the already-magnified image, and so on until it reaches the eye ...

Diamond Technologies has used i.MX 91, i.MX 93 and STM32MP2 processors as the basis for 45 x 45mm (size-L) OSM computing modules. i.MX 91 has an Arm Cortex-A55 core, plus a Cortex-M33 for secured real ...

Arduino is probably the first thing that comes to mind for most hobbyists and students when they think about embedded systems. It has certainly gained its name among the electronics community, and in ...

Maps can be drawings or models. They can help you find where you are and where you are going. They show symbols (pictures) for places such as car parks or places of worship like churches. They also ...

Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...

Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...