Morse-Code | home
EnviroTrol Project | Fabricating the Controller Housing | Controller Circuit
Controller Circuit
I had a mini 2x16 Char LCD Display I had acquired from some old lockbox that was given to me,
I managed to find a part number on the LCD and found the manufacturers site and was able to download the datasheet for it.
This LCD is just the perfect size for this application, it even has an LED backlight, that I can control with the OOPIC MCu, via a 2N3904 Transistor circuit.
Right now it is a prototype, and most of the PCB's are PTP (point to point) soldered. A couple of the PCB's used are actually salvaged out of other appliances,
the low voltage supply and the external 15 amp relay, was taken from an old coffee maker.
I eventually plan on fabricating a PCB and power supply for this project (once my CNC PCB Mill is up and running!), and have all components mounted on a single PCB.
There are 4 AC Outlets, 3 that can deliver upto 3 amps / load, and 1 that can handle upto 15 Amps.
I also Installed a 15Amp Circuit interruptor, seen in the top left of photo below.
The user has 3 buttons for navigating and editing menu items.
Which were salvaged from some old battery backups.
The AC power cord was salvaged from an old UPS (PC Battery backup), it was pretty heavy duty, so I figured why not.
Below you can see the terminal block for connecting the external switch inputs. The user can program these as an external
switch to either turn an outlet on or off, (You can use it with a float switch to turn on/off an external water pump, etc.)
