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by Ruben432
Wed Mar 13, 2019 9:43 am
Forum: Beginners
Topic: Electric pulse scanner
Replies: 8
Views: 651

Re: Electric pulse scanner

You may be able to do it with a Digital Hall-Effect Sensor which will detect DC or AC current, but you would need to match the sensor to the voltage/current present in the wiring. Do I understand correctly that a Digital Hall-Effect Sensor will detect AC or DC without having to cut wires of the but...
by Ruben432
Mon Jan 21, 2019 3:49 pm
Forum: Beginners
Topic: Cost effective project
Replies: 11
Views: 619

Re: Cost effective project

How would you approach the fact that ultrasonic sensor would move with the lift but the power supply is on the fixed part of the lift? I want this to be as robust/solid as possible and I think that will be a weak spot of the set-up. I would use a non-contact sensor (three type mentioned by others h...
by Ruben432
Mon Jan 21, 2019 1:28 pm
Forum: Beginners
Topic: Cost effective project
Replies: 11
Views: 619

Re: Cost effective project

You can go two ways: Wired sensors. Put a sensor on each lift and wire it to a central Pi. You would need a suitably tough cable and usable safe cable routes to each lift. Wireless. Use a Pi0WH at each lift. As long as you already have power to each lift so you can run a Pi PSU, this will almost ce...
by Ruben432
Mon Jan 21, 2019 1:26 pm
Forum: Beginners
Topic: Cost effective project
Replies: 11
Views: 619

Re: Cost effective project

- a Raspberry PI with an ultrasonic ranger sensor where a lift is counted above a certain height If you want low cost, use a microswitch that is closed when the lift goes above a certain height. If you want a non-contact solution, a capacitance sensor would be better than ultrasonic. Ultrasonic sen...
by Ruben432
Mon Jan 21, 2019 9:31 am
Forum: Beginners
Topic: Cost effective project
Replies: 11
Views: 619

Cost effective project

I've done Raspberry Pi projects before, but nothing too big yet. I'm currently researching the possibilities on following project: > a car lift bridge needs maintenance after (eg) 1000 lifts. We want to monitor the amount of lifts the machine did automatically. I was thinking: - a Raspberry PI with ...

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