Our blog | Majenko Technologies

Our blog

Random musings and maybe some useful information

Serial Test Sketch

Majenko Technologies, Matt Jenkins

Serial Test Sketch

This is a little sketch that I find useful for testing the serial communication on an Arduino-like board. It not only sends data of its own accord ( millis() every second), but also echoes back what i...

Aug 2, 2018

Hacking the SWA1 Smart WiFi Power Switch

Majenko Technologies, Matt Jenkins

Hacking the SWA1 Smart WiFi Power Switch

The SWA1 Smart WiFi sockets are great cheap WiFi controlled sockets that you can get on Amazon. Not only are they very convenient, but they are eminently hackable. Hackable to the extreme. Inside on...

Jul 22, 2018

Converting a Commodore C16 Keyboard to USB

Majenko Technologies, Matt Jenkins

Converting a Commodore C16 Keyboard to USB

Dave "The 8-Bit Guy" Murray recently bought a whole batch of Commodore Vic 20 motherboards and C16 keyboards cheap. Don't ask why. However, he's selling them off cheap [1] , so I decided to snap up on...

Jul 12, 2018

Arrays? Pointers? What the C?

Majenko Technologies, Matt Jenkins

Arrays? Pointers? What the C?

Arrays and pointers are always a problem for newcommers to C and C++ programmers. Especially if they have come from higher level, more "dumbed down" languages like Java or Basic. You may think that a...

Jul 2, 2018

Expected } at end of input error

Majenko Technologies, Matt Jenkins

Expected } at end of input error

A common problem, and one that can cause a new programmer to pull their hair out. However, it's a problem that always has a simple solution, and with the right tricks it's also easy to find where the...

Apr 26, 2018

Things to do with a chipKIT™ Lenny and a QuickIO. No. 2: Virtual Mouse

Majenko Technologies, Matt Jenkins

Things to do with a chipKIT™ Lenny and a QuickIO. No. 2: Virtual Mouse

Number two in my series of what to do with a Lenny [1] and a QuickIO [2] . How about a mouse? Yeah, a mouse. Honest :) Well, maybe not an actual mouse, but maybe make it control the mouse pointer in...

Feb 23, 2018

Things to do with a chipKIT™ Lenny and a QuickIO. No. 1: Autoclicker

Majenko Technologies, Matt Jenkins

Things to do with a chipKIT™ Lenny and a QuickIO. No. 1: Autoclicker

This is the first part of a new series entitled "Things to do with a chipKIT™ Lenny [1] and a QuickIO [2] ". In it, I'm going to be exploring some of the cool things you could do in just a matter of s...

Feb 20, 2018

Vacuum Fluorescent Displays on Arduino

Majenko Technologies, Matt Jenkins

Vacuum Fluorescent Displays on Arduino

Vacuum Fluorescent Displays are probably one of the coolest displays of all time. Certainly one of the most popular of recent history. Developed in 1959 by Philips they have endured right through to m...

Dec 23, 2017

Configuring Yùn WiFi

Majenko Technologies, Matt Jenkins

Configuring Yùn WiFi

It's not always obvious how to configure the WiFi on the Arduino Yùn properly, since most of the good settings are hidden away in the "advanced" interface. So I'll do what I can to expose them to you....

Jun 2, 2017

Adding An OLED To My Computer

Majenko Technologies, Matt Jenkins

Adding An OLED To My Computer

As part of my work I end up with hundreds of small TFT and OLED displays scattered around doing nothing. One of them, the PG25664CG OLED screen (16 shades of green) I figured would be about the same s...

May 19, 2017

Splitting Up Text in C

Majenko Technologies, Matt Jenkins

Splitting Up Text in C

A common question I often find is: How can I split this incoming data into parts? It's especially asked in conjunction with reading data through serial. So I thought I'd introduce you to two complet...

Apr 8, 2017

What Exactly is a GPIO Pin?

Majenko Technologies, Matt Jenkins

What Exactly is a GPIO Pin?

I was hoping to make this the topic of my first ever video tutorial, but I still haven't got round to cleaning my desk of all the junk and setting up a holder for my phone to use as a camera. Plus I a...

Mar 20, 2017

Prev
1
2
3
4
5
Next