Hi, I have an electric gate opener and want to attach a GSM-activated mechanism so I can "call the gate" to activate it - this means I don't need a button to open the gate.
By shorting terminals 1 & 3 on the control box with a piece of wire, after a small delay, the gate opens or closes.
When I attach the GSM unit to terminals 1 & 3, the gate refuses to move. I have also put a "555 monostable switch kit" in its place - to see if the timing/length of the trigger signal is causing the problem - but this doesn't work either - changing the trigger time does not seem to have the desired effect.
I've made sure the switch kit is normally off (i.e. when provided with the trigger pulse, it then provides a trigger output by shorting the two output wires) - just as if a wire was being placed between the terminals.
Can anybody suggest what to do, or what to measure next to get this gate to trigger with the monostable switch kit - I think this would be the best place to start - then I'll worry about the GSM trigger.
Many thanks,
Charlieboy.
By shorting terminals 1 & 3 on the control box with a piece of wire, after a small delay, the gate opens or closes.
When I attach the GSM unit to terminals 1 & 3, the gate refuses to move. I have also put a "555 monostable switch kit" in its place - to see if the timing/length of the trigger signal is causing the problem - but this doesn't work either - changing the trigger time does not seem to have the desired effect.
I've made sure the switch kit is normally off (i.e. when provided with the trigger pulse, it then provides a trigger output by shorting the two output wires) - just as if a wire was being placed between the terminals.
Can anybody suggest what to do, or what to measure next to get this gate to trigger with the monostable switch kit - I think this would be the best place to start - then I'll worry about the GSM trigger.
Many thanks,
Charlieboy.