Thanks for the o-scope readings MrEnergyFree, I leant my o-scope to a friend in another town and it will probably be a couple weeks before I see him again and retrieve it. My garage doors sensor stopped working, and I was able to use this information to create a bypassing circuit.
For others, the circuit diagram can be found seen at 206.255.233.35/garagedoorsafetyeyeshack.bmp, until my ISP changes my IP.
@MotesTV Is there any way that you could send me a diagram. It seems that you ISP changed your IP because I can't bring that bmp up and I trying to help out a co-worker with his eye. Thanks
The o-scope around 8:15 shows the inverse of the signal that is really being transmitted. The ground is hooked to 2 and the probe to 3. So every .5ms out of 6.5 ms the connection between 2 and 3 is closed, effectively grounding 3. When the beams are open there is no connection between 2 and 3, and the o-scope shows the full potential between them.
thankyou for your time to show me how this works. I would have liked to see how this could be bypassed if I wanted to, but at least I know what is going on with my garage door.-----Jim P. Matthews
Very good video. That's a very high duty cycle on that pulse. About 95% duty cycle.
What's strange is how the supply voltage and signals are super imposed upon each other. May a 555 timer PWM or astable circuit can be used. The is some one on You Tube that has successful bypassed the safety sensors already.
This has been flagged as spam show
66.205.110.105/GarageDoorSafetyEyesHack.bmp, be sure to type it in manually.
MotesTV 1 week ago
Comment removed
MotesTV 1 week ago
Nicely done video.....helps explain in a very straight forward manner.
fedchairboy 1 month ago
Gracias
s13konrad 1 month ago
It still works, just type it manually.
MotesTV 2 months ago
Thanks for the o-scope readings MrEnergyFree, I leant my o-scope to a friend in another town and it will probably be a couple weeks before I see him again and retrieve it. My garage doors sensor stopped working, and I was able to use this information to create a bypassing circuit.
For others, the circuit diagram can be found seen at 206.255.233.35/garagedoorsafetyeyeshack.bmp, until my ISP changes my IP.
MotesTV 3 months ago
@MotesTV Is there any way that you could send me a diagram. It seems that you ISP changed your IP because I can't bring that bmp up and I trying to help out a co-worker with his eye. Thanks
gnish42 2 months ago
The o-scope around 8:15 shows the inverse of the signal that is really being transmitted. The ground is hooked to 2 and the probe to 3. So every .5ms out of 6.5 ms the connection between 2 and 3 is closed, effectively grounding 3. When the beams are open there is no connection between 2 and 3, and the o-scope shows the full potential between them.
MotesTV 3 months ago
thankyou for your time to show me how this works. I would have liked to see how this could be bypassed if I wanted to, but at least I know what is going on with my garage door.-----Jim P. Matthews
CrappyRunescapeVids 3 months ago
Very good video. That's a very high duty cycle on that pulse. About 95% duty cycle.
What's strange is how the supply voltage and signals are super imposed upon each other. May a 555 timer PWM or astable circuit can be used. The is some one on You Tube that has successful bypassed the safety sensors already.
Bearcatt 4 months ago