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+--- Forum: KC868-A8 (https://www.kincony.com/forum/forumdisplay.php?fid=23)
+--- Thread: Digital Input (/showthread.php?tid=4749)
Digital Input - Vaughan2024 - 02-28-2024
Hi Have a question about a how best to connect a signal that is about 1.2 - 2 volt.
I presume I can not use the dry contact input 1 - 8 a they are 12v ?
Is there a way to get the board to detect a small 1.2 volt signal
Can I use inputs S1 - S4?
Thanks
RE: Digital Input - admin - 02-28-2024
you need use analog input port. that is for 0-5v
RE: Digital Input - Vaughan2024 - 02-28-2024
My problem is I have some inputs I can connect directly to the digital inputs on the KC868-A8 but I have some inputs that are shared with an alarm panel they are alarm sensors, Previously they were connected to an Arduino to the digital input with a sheared common ground, Worked fine.
But I can't connect them to the KC868-A8 digital inputs because it can't accept the low signal.
Is there an expander that will allow me to connect the low level signal inputs with shared common ground?
Thanks
RE: Digital Input - admin - 02-29-2024
i have said, connect to A1 or A2 analog input port.
RE: Digital Input - Vaughan2024 - 02-29-2024
Do you have an expander that will work with the KC868-A8 that will give me 6 or 8 channels?
2 channels is not enough.
Thanks
RE: Digital Input - admin - 02-29-2024
A8 have i2c extender on PCB, you can easy to add i2c analog input module
RE: Digital Input - Vaughan2024 - 02-29-2024
Do you make a suitable product or can you give me a link to something you recommend?
Can't seem to find many.
Thanks
RE: Digital Input - admin - 02-29-2024
you can use 2pcs of ADS1115 module, it's 4 channel ADC.
https://esphome.io/components/sensor/ads1115