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Arduino
From: graphitone
17 Aug 2015 20:03
To: ANT_THOMAS
389 of 542
40898.389
In reply to
40898.388
Could you have the door on the back on the ladder, like this:
From: CHYRON (DSMITHHFX)
17 Aug 2015 20:33
To: graphitone
390 of 542
40898.390
In reply to
40898.389
Where's his helmet and safety harness?
From: koswix
17 Aug 2015 20:38
To: ANT_THOMAS
391 of 542
40898.391
In reply to
40898.388
Windscreen wiper motor.
From: graphitone
17 Aug 2015 20:46
To: CHYRON (DSMITHHFX)
392 of 542
40898.392
In reply to
40898.390
Indeed, for a man who stores his dustpan upright on a shelf, he should know better... he'll have a boiler suit set aside for DIY matters, a utility belt/kilt for demanding jobs and his screws all sorted into individual compartments in a wall thinger.
From: ANT_THOMAS
17 Aug 2015 20:49
To: koswix
393 of 542
40898.393
In reply to
40898.391
And just run it for x seconds?
From: ANT_THOMAS
17 Aug 2015 20:50
To: graphitone
394 of 542
40898.394
In reply to
40898.389
It is a nice idea, but I think they're still too expensive, pretty tight budget.
From: CHYRON (DSMITHHFX)
17 Aug 2015 20:53
To: graphitone
395 of 542
40898.395
In reply to
40898.392
Mine are piled in cardboard cartons -- when I remember to put them back.
From: ANT_THOMAS
17 Aug 2015 21:05
To: ANT_THOMAS
396 of 542
40898.396
In reply to
40898.393
Or I could use a hall effect sensor or two to detect whether it is open or shut.
From: graphitone
17 Aug 2015 22:41
To: CHYRON (DSMITHHFX)
397 of 542
40898.397
In reply to
40898.395
Mine are in an old Fairy tub.
:J
From: koswix
17 Aug 2015 23:07
To: ANT_THOMAS
398 of 542
40898.398
In reply to
40898.393
They use a mechanical linkage which reverses direction (motor runs continuously in one direction), so just install it so that turn in direction coincides with the max open position of the hatch, then add a limit switch to stop the motor when it reaches there.
They use a worm gear in the gearbox so produce substantial torque, but I've no idea if it's enough to lift a MDF door from horizontal. If there was torque figure available somewhere it's fairly trivial to work it out, though. Or just try it and see, if I doesn't work you have a spare motor for making a robot.