OUTPUT to one GPIO and INPUT on another GPIO

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Quart
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OUTPUT to one GPIO and INPUT on another GPIO

#1 Post by Quart » 30 Aug 2019, 13:25

I have a system that when in active mode it closes a circuit.
Can it be monitored by ESP Easy ?

Thinking like setting a gpio to output 3 volt and another gpio as input.
And when Input gpio got 3volt it sends a MQTT message

Can it be done ?

dirk_k
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Re: OUTPUT to one GPIO and INPUT on another GPIO

#2 Post by dirk_k » 16 Sep 2019, 07:38

i think this should be possible ...
i would try sending a digital signature (GPIOx high,low,high,low,high) and try to receive this pattern at another GPIO.
How long is your circuit? is there another powersource?

Quart
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Joined: 16 Jul 2019, 10:08
Location: Sweden
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Re: OUTPUT to one GPIO and INPUT on another GPIO

#3 Post by Quart » 16 Sep 2019, 14:53

I plan to set the ESP with in 10cm from the system with the circuit.

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