Upgrading Sonoff Wireless Smart Switch Flash Memory (ESP8266)

I’ve been playing around with the ESP8266 based Sonoff Wireless Smart Switch and I really wanted to upgrade the flash from the 1MB it comes with to 4MB so I can re-program it over wifi. I’ve already got custom firmware running on it, but I don’t like the idea of opening it op and hooking it … Continue reading Upgrading Sonoff Wireless Smart Switch Flash Memory (ESP8266)

PnP Super Animals Card Reader Barcode Generator

In this article I attempt to decode the barcode used for PnP’s “Super Animals” cards. It was done mainly as a learning exercise, and to play some sounds for my 2 year old son with the scanner. Scroll down to the bottom if you’re only interested in the generator. Pick n Pay recently launched a … Continue reading PnP Super Animals Card Reader Barcode Generator

Programming an ITEAD Sonoff Wireless Smart Switch (ESP8266)

I purchased some of these wireless smart switches from ITEAD, but didn’t like that you had to use their app and cloud server to use them. They use an ESP8266 microprocessor, so I wanted to see if I could re-program it to load my own firmware. You can also pick up a similar module from … Continue reading Programming an ITEAD Sonoff Wireless Smart Switch (ESP8266)

Grafana and InfluxDB quickstart on Ubuntu

This quickstart assumes you know how to install Ubuntu and access it through a terminal (command line). EDIT: There seems to be a bug with the latest stable version of Grafana (2.6) and running on a headless system such as the one I’m describing here (Ubuntu Server). This bug causes icons not to be displayed in … Continue reading Grafana and InfluxDB quickstart on Ubuntu

Solderless method to connect ESP-12 module to breadboard

The ESP8266 ESP-12 module has a 2mm pitch, making it difficult to use on a breadboard with a 2.54mm pitch. Usually you are required to solder the module to a breakout board first. This is just a quick ‘hack’ to connect the module to a breadboard for some testing without soldering it to a breakout board … Continue reading Solderless method to connect ESP-12 module to breadboard

Arduino Web Enabled Aquarium Controller

This is a project I started a few months ago, but never finished. I got distracted by the Raspberry Pi :). Even though it is unfinished maybe someone could get some value out of the current state of the project. The idea was to create a controller for an aquarium, to measure temperature, measure water … Continue reading Arduino Web Enabled Aquarium Controller

Creating a dynamic image with PHP

To create a dynamic image is easy with PHP and the GD library. Its also a fun way to make your forum banner stand out by having it change each time someone loads it. For example, I used to have the following forum signature while I was playing EverQuest II: The image is created by … Continue reading Creating a dynamic image with PHP

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