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Question about BLTouch

drmaestro

Question about BLTouch
April 29, 2016 03:35PM

Registered: 10 years ago
Posts: 330

Hi,

I bought the BLTouch from eBay.Anybody using it with RAMPS? I've read about voltage issues, telling that I needed to add external power for it to perform as expected, otherwise RAMPS could get damaged. How and where do you add the external 5 Volts required?

Thanks.

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stephenrc

Re: Question about BLTouch
April 29, 2016 04:05PM

Registered: 12 years ago
Posts: 548

I use a 7805. The neg & pos pins into the appropriate sides of the 5A input connector, and used a wire with a single dupont connector on the 5v+ output to a pin installed to the 5v input for the servo connections.

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drmaestro

Re: Question about BLTouch
April 30, 2016 12:38PM

Registered: 10 years ago
Posts: 330

Thanks for the reply. I understand where to connect the 3rd pin on the 7805 (the 5V connector) but I am not very sure about the first 2 pins (positive and ground). Where is the location of the 12 volts and ground on the RAMPS? (I know, that is a very basic question but my understanding of the board is limited).

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stephenrc

Re: Question about BLTouch
April 30, 2016 01:35PM

Registered: 12 years ago
Posts: 548

Two of the places is where you connected your powersupply.

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