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projects

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...

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...

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