Greenhouse monitoring and control -
The first job is to design and make a pcb for the main circuit. I know from past experience that it will probably fit onto a piece of 100 x 160 material and so it proved! The circuit needed a fail number of links. On balance, I think the links are easier than making a double-
This is the pcb for the Raspberry Pi (it’s plugged onto the Pi in the left pic). Here I used a pcb I had already designed for the Pi. The only problem is soldering the 40-
The picture on the left shows the power supply prised out of a “wall wart”. I have fitted a 20mm 200 mA fuse as the rest of the mains circuit is fused at 13 A. The supply is protected by a piece of Tufnol secured by nylon screws.
The right picture shows the Tufnol base board that the other circuits are attached to again with nylon screws. The Lipoly battery sits on top of the power supply.
Left shows the unit with wiring still to do. Right is the mains input with female spade connectors. Far right is the temperature sensor in its own box.
Above, are the four Cliffcon mains sockets. These are nice and compact, touch-
Below, is the unit essentially finished apart from three 5-
Software is next.