DaveWilliamsTX
New Member
I've created a simple motor control board with a couple of SPDT relays and deer-feeder timer/controllers I had laying around. The use-case is to open and close my chicken coop door actuator at the appropriate time.
The circuit works great on a cheap 12v bench-top power supply. I get + or - 12v for 10 seconds out of the motor control lugs on my board when the timers go off. When I connect it to a fully charged (12.26v as measured with my multimeter) car battery, I get no voltage differential between the motor control lugs when the timers go off. I can hear the relays tripping in both cases, but on the battery I get no juice on the control-end. Any ideas?
View attachment 68342
I found this thread:
https://www.electro-tech-online.com...verse-polarity-to-a-motor-using-relays.42524/
and implemented a design based on the first couple of posts. I've attached a diagram of my circuit.
Here's the relays I used:
http://www.radioshack.com/product/index.jsp?productId=2062482
Here's the linear actuator:
**broken link removed**
Here's the model of the timer:
**broken link removed**
Thanks for any/all input - Dave
The circuit works great on a cheap 12v bench-top power supply. I get + or - 12v for 10 seconds out of the motor control lugs on my board when the timers go off. When I connect it to a fully charged (12.26v as measured with my multimeter) car battery, I get no voltage differential between the motor control lugs when the timers go off. I can hear the relays tripping in both cases, but on the battery I get no juice on the control-end. Any ideas?
View attachment 68342
I found this thread:
https://www.electro-tech-online.com...verse-polarity-to-a-motor-using-relays.42524/
and implemented a design based on the first couple of posts. I've attached a diagram of my circuit.
Here's the relays I used:
http://www.radioshack.com/product/index.jsp?productId=2062482
Here's the linear actuator:
**broken link removed**
Here's the model of the timer:
**broken link removed**
Thanks for any/all input - Dave