Category: Electronics

Cheese fridge repairs

My cheese fridge was partially destroyed at the start of July. A car crashed into a power pole carrying both a 22kv distribution line and the 230v line for our house. They . touched . briefly It turns out a

Posted in Cheese Fridge, Electronics, General Randomness, Projects

Power meter optical pulse detection

I’ve always planned to monitor my electricity usage. I had previously (about a year ago!) ordered some power transformers from seeedstudio and a six channel ADC for simultaneous three phase current and voltage measurement but never got around to starting

Posted in Electronics, Embedded Systems, Power monitoring, Projects, Wino-Board

Wiring up the ESP8266

Before you can program the ESP8266, you need to wire it up. First things first, the ESP8266 uses a 2mm pin spacing so you can’t use a standard breadboard as these use a 0.1 inch spacing. It also uses 3.3V

Posted in Electronics, Embedded Systems, ESP8266, Projects

Introducing the ESP8266

About a year ago I put up some money for the Wino-Board kickstarter project, received my Wino-Boards and did nothing with them for 12 months. They are effectively a tiny Arduino board attached to the innards of an ESP8266 WiFi

Posted in Electronics, Embedded Systems, ESP8266, Projects, Wino-Board

Petit Studio Raspberry Pi HDMI extender cheap cable fix

Note: This fix is NOT due to a fault of the Petit Studio Raspberry Pi Camera extension kit, it’s due to the use of cheap HDMI leads. I brought some Petit Studio Raspberry Pi HDMI camera extenders from Tindie. These

Posted in Electronics, Raspberry Pi, Weather Station

EP Solar MPPT Tracer charge controller serial code

Following on from my previous post working out the EP Solar Tracer serial protocol, I’ve got code working on a Raspberry Pi. It’s even validating the CRC checksum.

Posted in Electronics, Embedded Systems, General Randomness, Solar power

EP Solar MPPT Tracer charge controller serial interface

I’m currently involved in a project to set up a solar powered wireless station and wanted to remotely monitor the battery charge process. I looked into a number of charge controllers to see if any of them could be connected

Posted in Electronics, Embedded Systems, General Randomness, Raspberry Pi, Solar power

Pulsecounter PCB’s have arrived

I posted recently about detecting power loss in an AVR and quickly writing values to EEPROM before power is lost completely and have since received the PCB’s I ordered from oshpark. This is the first time I have ever ordered

Posted in AVR, Electronics, General Randomness

Soldering ESCs

I’m using 30 Amp hobby King ESCs in my Quad Copter. They each come with five bare ends which need connectors soldered to them. Here’s a picture showing the result of about two hours of soldering and heat shrinking. I’ve

Posted in Aerial Photography, Electronics, Projects, Quad Copter, Radio Control

Update – Bosch BMP085 Source (Raspberry Pi)

I have updated my code to Read data from a Bosch BMP085 with a Raspberry Pi to correct some bugs reported back to me. The main bug was that I’d forgotten to close the i2c file at the end of

Posted in Electronics, Projects, Raspberry Pi, Weather Station