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ramps 1.6 + servos ?

Posted by davidmarli 
ramps 1.6 + servos ?
April 19, 2018 01:52AM

I just bought a ramps 1.6. It seems great, but when I plug my bltouch in servo, nothing lights on...
With my multimeter, there is no 12v between + and - but 0v...
So is there something to do to have power on servos ?

I see 2 pins with no connectors J4 (betwwen the two green connector) is that the solution ?
I find nothing about this ramps 1.6

Thank a lot.
Re: ramps 1.6 + servos ?
April 19, 2018 04:56AM
Servos can be very power hungry, that's why they can be fed from an external 5V source instead of the weak internal 5V reulator. This is usually selectable by a jumper ( which seems to be missing in your case )

BTW: I've never heard of RAMPS1.6, would be nice to add some more info...
Re: ramps 1.6 + servos ?
April 19, 2018 05:25AM
ramps 1.6 is not open source... so no documentation.. (Shakes fist at manufacturer!!)

On a normal ramps there is no voltage on the +5v pins of the servo lines until it gets jumpered to vcc

most servos are not 12v... so I would be careful trying to get 12v there...

The image I see does show a track going from the +v line to somewhere.. but cant see where...
Re: ramps 1.6 + servos ?
April 19, 2018 05:28AM

Its a bigtreetech only board.

violates gpl, no documentation

avoid at all costs
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