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wiring.txt
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wiring.txt
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Breadboard connections:
=======================
Heat/pump SSR output (3 wires, left hand side of the machine)
Red: row 17 (right) = Heat SSR - DC
Green: row 18 (right) = Heat SSR + DC
Yellow: row 16 (right) = Pump SSR + DC
Note: make sure Heat SSR - DC and Pump SSR - DC are connected with a wire (white)
------------------------------------------
DS18B20 temperature sensor input (3 wires, left-hand side of the machine)
Black: 23 (left) to GND
White: 24 (left) to GPIO pin 4 (1-wire interface data)
Grey: 25 (left) to 3V3
Note: 10K resistor between (24) and (25)
------------------------------------------
10K pot: (3 flat wires, right hand side of the machine)
Yellow: ADC input 02
Green: +3V3
Red: -3V3
------------------------------------------
Scale: (4 wires, right-hand side of the machine)
Brown: -
Red: +5V
Orange: ADC input 00
Yellow: ADC input 01
------------------------------------------
SSR connections
===============
Heat SSR
DC: - white AND red
+ green
AC: grey / red
------------------------------------------
Pump SSR
DC: - white
+ yellow
AC: blue/blue