Raspberry-pi
A couple of weeks ago, the Raspberry Pi Foundation announced a partnership with RealVNC in which the latter would offer a free VNC Connect account for Raspian Jessie users. What is VNC? Since September 2016, every version of Raspian has come with the built-in ability to remotely access and control
DS3231 Real Time Clock
My addiction to clocks started a few years back when I got it into my head that I wanted to build a mechanical timepiece. I spent months scouring Google for a clock kit and all I came up with were mass-produced electronic movements. That's until I found Dave
Arduino
In today’s blog, I am going to show you the easy way to interface 7-segment displays – Using the MAX7219. Each 7219 chip can be used to interface eight 7-segment digits, or 64 individual LEDs. Previously, in part 1 of my blog posting Programming a 7-segment Display, using just Arduino
Raspberry-pi
This is the second project in my series Great Projects for your Spare Raspberry Pi - Serving a Community. The first project in the series, Contributing to the Global Network of Aviation Tracking - Flightrader24 - can be found here. Disclaimer As I always take care to note in my
raspberry pi
What to do with a spare RasPi? At the last count, I had eight Raspberry Pis at home. I bought my first one a few weeks after the little board was launched, and as the Pi advanced, I found myself buying each new version for "my next project"
blynk
A word of warning Before I begin, a word to this blog's regular readers. This post will likely be read by people with little background in electronic projects. I've written it for the novice to introduce him/her to the wonders of the Raspberry Pi, remote
Arduino
The purpose of this project is to build a countdown timer comprised of two 7-segment displays. Several interesting challenges are solved or resolved: * How to interface a 7-segment display to the Arduino directly – without using a MAX7219 chip. * How to write concise and efficient Arduino C code to drive the
Platform
This post is different from anything we’ve published before. It’s an explanation of how we created one of our most ambitious projects to date - and it’s also a call for help. Working on the project opened up incredible possibilities for the rapid development by the Community
Arduino
A couple of weeks ago I set up a new bench in my workshop. It was a great new space, but each time I wanted to flash an Arduino or ESP8266, I had to turn 180 degrees to get to my computer. I knew there must be a better way.
ESP8266
We all know how fidgety it is to flash the ESP: 3.3 volts only, smoothing capacitors, GND-GPIO 0, VCC to CH_PD. Wouldn't it be nice if there was a simple adapter? A quick look in ebay reveals that at least for the ESP-01 you can pick
USB
As most readers of this blog probably know, there's a limit to how much current you can pass through a Raspberry Pi. When used with a WiFi dongle, mouse and keyboard, a connected Hard Drive or external webcam can be all too much - so it's
Scorbot
About two years ago I got Scorbot from a junk yard. One of the first posts I wrote was dealing with Scorbot first moves. At first I thought it is just junk and I will harvest it for parts. Then, as I continued checking it, I found out this 25