I'm trying to design a motorised system for opening and closing window blinds, operated by a single switch (probably a hand motion detector). Wave your hand, motor winds the blind up until it hits the limiter (reed switch or microswitch activated by something in the cord). All remains quiet until the next wave of the hand. Motor goes into reverse, lowers blind until limiter reaches the other end. Dormant until the next cycle...
It's driven by a small, very low geared, reversible 12v DC motor that does produce enough torque for the job. It is worm geared so will stay put when idle. I was hoping to achieve all this using relays. There are various relevant circuits on this and other sites but none I can find that perform this relatively simple task. It's doing my head in. (I used to be heavily into DIY electronics but haven't built anything for years). Solutions welcome!
It's driven by a small, very low geared, reversible 12v DC motor that does produce enough torque for the job. It is worm geared so will stay put when idle. I was hoping to achieve all this using relays. There are various relevant circuits on this and other sites but none I can find that perform this relatively simple task. It's doing my head in. (I used to be heavily into DIY electronics but haven't built anything for years). Solutions welcome!