Most commented posts
- MicroPython WebREPL on Android — 23 comments
- ESP8266 Wi-Fi Module Revisited — 20 comments
- Arduino as a Network Monitor — 18 comments
- LM317 to output 3.3 Volts — 15 comments
- Explaindio Video Creator — 11 comments
Author's posts
Dec 17 2014
ESP8266 Wi-Fi Module Revisited
A while back I posted some information about the ESP8266 Wi-Fi Module. You can view that post here. I mentioned that for testing it, an Arduino with multiple hardware serial ports would be ideal. Well, I just got an Arduino Leonardo which matches that criteria. Here is how I hooked it up: you can …
Dec 12 2014
Explaindio Video Creator
You may not think this post has a lot to do with MicroController Electronics, however, read on before you formulate an opinion. There is a new Windows and Mac Video Creator program called Eplaindio that recently became available. I am using it to create training, educational and advertising videos for various projects. It is very …
Oct 16 2014
Prototyping Circuits using a Breadboard
When I first heard the term ‘breadboard’ when reading about electronic circuits, I thought about bread of course and some great bread making recipes. I must have been hungry! For electronic recipes 🙄 (i.e. circuits), originally a smooth piece of wood (literally a breadboard with nails and wiring) was used as a surface for assembling/wiring electronic …
Oct 15 2014
Arduino Weather Station
With just a few sensors, one can determine a lot about the weather. The BMP085 can be used to sense barometric pressure and temperature and the DHT11 can be used to sense humidity and also temperature. Here is what they look like attached to a mini breadboard: …
Oct 10 2014
HC-SR04 Distance Sensing
Animals such as bats and porpoises use ultrasound for locating prey and obstacles. If you have an electronic device that needs to sense distances from objects (like a robot or an automatic door opener) you might consider using an HC-SR04 Sensor Module. No one can sneak up on you with a couple of these and …
Oct 10 2014
Measuring Light Intensity
Any camera buffs out there? Sometimes it is handy to be able to measure the amount of light at a particular spot. This is needed sometimes so you can adjust your camera to take the ‘perfect’ picture. Or perhaps you are calculating the amount of solar energy your solar panels will be producing given the …
Oct 06 2014
ESP8266 Wi-Fi Module
My children bought a present for me recently (yes, another birthday, I really am getting older 🙁 ). It is an ESP8266 Module which is a self-contained [IoT] Wi-Fi networking solution. Here are pictures (with the pins labelled): My module comes from Elecrow.com. Since this …
Sep 26 2014
DIY Dual Relay Circuit
It is sometimes very handy to be able to control mains electric via an arduino to turn things like lights on and off. [warning]BE VERY CAREFUL hooking up any mains electricity. [/warning] I built a dual circuit so that two things can be controlled from one board. Here is the fritzing graphic: Once built, …
Sep 26 2014
3 PIN HD44780 LCD
One of the problems of connecting an HD44780 LCD to an arduino is the number of pins taken up (usually 6). There is an older article here for hooking up an HD44780 LCD to an arduino with only 3 pins. (Note: There is an alternate link here as the original link may be down.) The …
Sep 03 2014
DIY Arduino Circuit Board
Shown below is one of my DIY Arduino circuits. The circuit does not have the FTDI chip built in. The FTDI circuit is only needed for programming and cutting out un-necessary components saves a bit of money. The ICSP connection (6 pins comming out the side) on …
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