Font Customiser for Adafruit's fontconvert

We love Adafruit. We love their products, libraries, their tools, ... well basically everything they do and share to the public. I've been using their Adafruit GFX library for a while now with every kind of display available on their shop : from the low-power Sharp to the SPI-enabled color TFTs, and…

[Recycling Thursday] Reading NFC MiFare cards

I've been piling a lot of junk boards, sensors and electronic things recently and since I have some time, I decided I might try to revive some of these old items to do something (quite) useful ! They are primarily v0.1 boards from kickstarter campaigns, old versions of shields and…

Reassessing Lua on the NodeMCU

Ok, so in the last few articles, we focused on what the NodeMCU + Lua ecosystem could do for us; and actually, it does a great deal of stuff in a very straightforward way. The Lua API, albeit a bit php-esque sometimes, is pretty simple to understand and to code. The…

Programming an Olimexino 85

Olimex is a Bulgarian firm that creates development boards based on various controllers, including Atmel's AVR such as the ATMega 328P (like the Arduino Uno) or the ATTiny85, for instance. One of these boards is the Olimexino 85, based on the ATTiny85. You can buy it here. This board comes…

Creating a simple WiFi-enabled energy monitor

.. and using Kibana to display the data TL,DR; I created a standalone top hat EN 500022 DIN-rail compatible device to monitor and log to a remote ELK server via WiFi my main room temperature and power consumption; The electronics is made up with a standard Arduino UNO board, a…