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BLOCKsignalling
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Suggested Test Setup
Once you have programmed all your settings, it is recommended to test the operation of the module
to check that it operates as expected.
The diagram below shows a push button connected to the TRIG input, to ground that input when
pressed.
The led on the DONE output is also connected to the positive Vin terminal, as the DONE output is
grounded for the duration of the DONE signal. A 1k resistor is wired in series with the led.
The status of the two relays can be seen from the leds on the board, which illuminate when the relay
coils are energised.
BLOCK
signalling
12V DC
POWER
SUPPLY
VIN
GND
+
-
A
GND
C
INFRA-RED
SENSOR
PUSH
BUTTON
“TRIGGER”
1k RESISTOR
“DONE”
LED
RELAY2 ENERGISED LED
RELAY1 ENERGISED LED