Hello all,
I'm new to this forum but have a question I'd like to see if I can get some answers to and guidance on how to proceed. I have a diy maker project using an ESP8266. In short, it sounds an remote chime and I get a SMS text when a magnetic door switch (reed switch) is opened. I've currently been developing this only on a bench top. However, I'd like to tie this into a door switch on my existing security alarm panel to use the existing sensor, cabling etc. My alarm panel is monitored so I don't want to screw that up or inject noise into the existing alarm system. Basic measurements on the zone with the door open and closed are as follows:
closed, resistance = ~10 Ohms
closed, voltage = ~0.01 Volts
open, resistance= "open"
open, voltage = ~13 Volts
Can you provide some guidance as to how I'd tie into this circuit for a diy project to measure the door switch open and close for something like an ESP8266 or basic Arduino project? Is it as simple as measuring the voltage on the zone? I assume I'd have to get that down to the voltage logic for the ESP8266 or Arduino, but is it that simple? I'm not familiar with analog circuits? Do I need an isolator circuit of some sort or not an issue given its all low voltage? Thanks in advance for any guidance.
I'm new to this forum but have a question I'd like to see if I can get some answers to and guidance on how to proceed. I have a diy maker project using an ESP8266. In short, it sounds an remote chime and I get a SMS text when a magnetic door switch (reed switch) is opened. I've currently been developing this only on a bench top. However, I'd like to tie this into a door switch on my existing security alarm panel to use the existing sensor, cabling etc. My alarm panel is monitored so I don't want to screw that up or inject noise into the existing alarm system. Basic measurements on the zone with the door open and closed are as follows:
closed, resistance = ~10 Ohms
closed, voltage = ~0.01 Volts
open, resistance= "open"
open, voltage = ~13 Volts
Can you provide some guidance as to how I'd tie into this circuit for a diy project to measure the door switch open and close for something like an ESP8266 or basic Arduino project? Is it as simple as measuring the voltage on the zone? I assume I'd have to get that down to the voltage logic for the ESP8266 or Arduino, but is it that simple? I'm not familiar with analog circuits? Do I need an isolator circuit of some sort or not an issue given its all low voltage? Thanks in advance for any guidance.