[Skip to Content]

Random projects and posts - page 9

19 AUGUST 2012

Cheap Sources of Components

One major factor which affects many electronics hobbyists is the cost of purchasing components and associated fixing hardware. Very cheap sources for used parts which are normally still OK to use for your own projects are...

10 AUGUST 2012

XBee Central Heating Control via Raspberry Pi

XBee Central Heating Control via Raspberry Pi Following from the previous post detailing the plans to build an XBee & Raspberry Pi central heating controller we have now built the control board and written the Microchip...

08 AUGUST 2012

Raspberry Pi central heating controller

Now the solar monitoring and logging system is working we are going to build the wireless remote control for the hot water and central heating boiler and controller/programmer. We currently have a variant of an ACL Drayton...

01 AUGUST 2012

12v iPad Charger

Following the 4th Apple iPad charger failing and not wanting to spent even more money with Apple to replace them we decided to try to make 12v powered chargers to make use of the excess PV power we now have during the daytime...

25 JULY 2012

The Hackaday Effect

Today one of my projects was added to the popular hacking site Hack a Day for the Raspberry Pi solar logging project. Normally the blog receives on average 30-40 visitors and around 80 page views per hour. Within minutes...

24 JULY 2012

Raspberry Pi Solar Data Logger

The Raspberry Pi solar data logger project is now live and is the latest version of our previous data logging systems using Arduino and Android + IOIO board projects. The data is used on a custom reporting website on home.briandorey.com...

20 JULY 2012

Raspberry Pi Fan Controller and Interface

To make it easier to connect the various cables to the new Raspberry Pi ADC board we decided to make a second PCB with header pins to connect to the ADC board and take these to screw terminals. Also we wanted to have a temperature...

14 JULY 2012

Raspberry Pi I2C Microchip MCP3428 ADC Reading

The code sample below shows how to read the ADC values from the MCP3428 16-Bit, Multi-Channel Analog-to-Digital Converter with I2C™ Interface and On-Board Reference by Microchip via I2C on the Raspberry Pi using Python. The...

11 JULY 2012

Raspberry Pi I2C Analog to Digital Converter

The original plan for the Analog-to-Digital Converter was to use the Dallas 1-Wire system and use the DS2450 1-Wire Quad A/D Converter which was advertised as being a 16 bit device but after buying two of the chips which...

10 JULY 2012

New Raspberry Pi I2C interface project

Currently working on a new I/O board add-on for the Raspberry PI computer. The PCB will have 8 16bit A/D inputs which are connected via buffers to the I2C port on the Raspberry PI GPIO port.  There will also be a built...

06 JULY 2012

Raspberry Pi I2C Microchip MCP9800123 Temperature Sensor

The plan to use an Android phone and IOIO board to log the solar data has been abandoned after repeated failures of the IOIO boards to run for more than 24 hours without crashing or resetting. It maybe that I have purchased...

26 JUNE 2012

IOIO Android I2C Light Levels using TSL2561 Logging Code

As part of the home solar PV and hot water project we are now using an IOIO board with an android tablet to process the sensor data and upload to our online reporting website. The code below is used to get the sensor data...

26 JUNE 2012

IOIO Android I2C Temperature Logging Code

As part of the home solar PV and hot water project we are now using an IOIO board with an android tablet to process the sensor data and upload to our online reporting website. The code below is used to get the sensor data...

25 JUNE 2012

Blog featured on EEWeb Electrical Engineering Community

My project blog has been featured as Site of the Day on the EEWeb Electrical Engineering Community website. www.eeweb.com

11 JUNE 2012

From Arduino to IOIO and Android Solar Logging Project

The planned Arduino based Solar PV and Hot water monitoring and logging system was found to be very unstable and despite repeated attempts and several code rewrites we had to give up on the Arduino based solar logging system...

31 MAY 2012

Thermal Panel fitting

After several problems with slate suppliers, the builder who is replacing the front roof was able to get nearly all the slates installed by yesterday and we then fitted the solar hot water panel frame and pipework onto the...

26 MAY 2012

Arduino Solar Logging Installed

Following from Arduino based Solar PV and Hot water monitoring and logging posts the various hardware and parts of the software have been installed into the PV control cupboard and the new logging hardware and software is...

13 MAY 2012

Arduino Solar Logging Update

Following from Arduino based Solar PV and Hot water monitoring and logging post the various hardware and parts of the software have been installed, built and written. After two busy weekends working on the project the...

13 MAY 2012

Arduino Mains Water Pump Logging

As part of the solar hot water system (view other blog posts) we have been installing onto our home we wanted to be able to keep track of the time the solar water pump is running. To monitor the pump we decided to use...

13 MAY 2012

Arduino Mains Voltage and Current Logging

As part of the solar hot water system (view other blog posts) we have been installing onto our home we wanted to be able to keep track of the mains electric being used by the house. Based on the open source OpenEnergyMontor...

13 MAY 2012

Solar Hot Water Install Dual Coil Cylinder

Next stage of the solar hot water install, fitting a new dual coil hot water cylinder. The new cylinder was 150mm taller and 70mm wider than the old hot water cylinder which was installed before which required all the...


1 2 3 4 5 6 7 8 9 10 11 12 13