Following on from my post Arduino based Solar PV and Hot water monitoring and logging we have designed and created the new PCB (printed circuit boards) for the MCP9801 temperature sensors and also a PCB to hold a mains relay for switching the...
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We are upgrading our DIY PV off grid system with extra panels and also a solar hot water system using a kit from http://navitron.org.uk/ with a 20 tube 58mm double wall evacuated tube solar collector on the roof and a new water cylinder and...
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After looking for more items around the house which could be charged from the new solar system, we decided to try converting the Logitech Harmony 885 remote control chargers to run from 12 volts.
The Logitech charger runs at 8 volts and uses...
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