Show HN: Raspberry Pi garage door opener

Post by catchmeifyoucan » Fri, May 15, 2020, 4:38 PM UTC

rtkwe wrote: post #89

catchmeifyoucan wrote: post #85

An easier way to achieve this using a raspberry pi would be to simply have the pi press the right button on the garage remote. I took a pass at this a few years ago. Compared to messing with larger electronics, it’s a much easier setup. https://www.heyraviteja.com/post/weekend-projects/open-garag...

There are direct hookups on the back of basically every garage door opener for connecting wall switches you could use too to make it even simpler.

Post by KirinDave » Fri, May 15, 2020, 4:43 PM UTC

buescher wrote: post #88

rtkwe wrote: post #83

Earlier quoted context omitted.

The 'throw a relay on the door opener' is doing exactly the same thing hitting the interior button to open the door. It sends the same signal to the motors and doesn't bypass any of the load limiting or safety sensors. Those are basically safe.

Those projects can be made safe, but they generally don't mitigate the hazards that compliance with this section will: https://www.law.cornell.edu/cfr/text/16/1211.14 They are not the same thing as a human pressing the button.

Post by buescher » Fri, May 15, 2020, 4:50 PM UTC

rtkwe wrote: post #90

buescher wrote: post #88

Earlier quoted context omitted.

Those projects can be made safe, but they generally don't mitigate the hazards that compliance with this section will: https://www.law.cornell.edu/cfr/text/16/1211.14 They are not the same thing as a human pressing the button.

Those are a bit overkill, I've not had any garage door that beeped for opening for remotes for example and that's a similar distance of triggered by someone not in the immediate area. They should be safe based just on the break sensors and current limiting.

Post by _ea1k » Fri, May 15, 2020, 5:25 PM UTC

rtkwe wrote: post #90

buescher wrote: post #88

Earlier quoted context omitted.

Those projects can be made safe, but they generally don't mitigate the hazards that compliance with this section will: https://www.law.cornell.edu/cfr/text/16/1211.14 They are not the same thing as a human pressing the button.

Those are a bit overkill, I've not had any garage door that beeped for opening for remotes for example and that's a similar distance of triggered by someone not in the immediate area. They should be safe based just on the break sensors and current limiting.

Post by soylentcola » Fri, May 15, 2020, 5:37 PM UTC

isbjorn16 wrote: post #75

soylentcola wrote: post #67

Earlier quoted context omitted.

If they use IR remotes, I imagine you could plug in a network connected Pi with a USB IR blaster next to each AC unit. Then stick the IR emitter LED on the little window where the IR receiver is on the AC unit. Then it's just a matter of capturing the remote codes and setting up a way to remotely command a given Pi to send that pattern of pulses out of its IR emitter. edit: I just did a quick search and Sparkfun sell…

I can't speak to the quality of this yet, but I just bought https://www.amazon.com/gp/product/B016D5L5KE/ref=ppx_yo_dt_b... kit to dork around with myself. It comes with an IR transmitter and a whole host of other stuff to play with. That said, I do love adafruit and sparkfun for most purchases. My bank account doesn't, but I certainly do.