Schematics feedback

jegb

unread,

Oct 15, 2015, 5:42:00 AM10/15/15

to Opensource Laser

Hi

I have been following this group for a while, and like others I am modifying my laser cutter heavily. My HV power supply is slightly different, but I tried to incorporate the modifications most people are interested.

Curious how we could use the water temp measurement on the Marlin firmware, since we have 3 Thermistor inputs.

I am reaching out for feedback, as there are few challenges on the design, but nothing that can not be solved, for example completely isolating the electronics from the HV power supply with opto couplers and relays.

Let me know and I will keep editing this until we are satisfied, happily can contribute to add this to an official guide.

regards,

Enrique

wiring_diagram_ramps_k40.png

william hare

unread,

Oct 30, 2015, 11:13:52 AM10/30/15

to Opensource Laser

Thanks for the schematic! I am about to gut my laser, this helps a lot!

TealVince

unread,

Oct 30, 2015, 1:43:50 PM10/30/15

to Opensource Laser

Very cool! I'm gathering all my parts for a similar smoothieboard conversion. I noticed your 12V supply is pretty beefy but isn't doing much now. Is the intention to eventually move the ramps fully over to the 12V supply?

jegb

unread,

Nov 4, 2015, 3:02:09 PM11/4/15

to Opensource Laser

one comment that struck me on other post is that RAMPs should be powered before Laser PSU , that discards the ability to use the 24V via a dc converter to 12 to power RAMPs.

This was due to Laser ON signal being triggered momentarily, until the pull up brings the signal up. I will have to experiment. I have same schematics work in progress for smoothie board, which is on the way.

I have updated the schematics with the 12V rail, which powers Fans, LED rails, and perhaps Heat exchanger fan for the water pump.

jegb

Arthur Wolf

unread,

Nov 4, 2015, 3:12:43 PM11/4/15

to jegb, Opensource Laser

On Wed, Nov 4, 2015 at 9:02 PM, jegb <enrique...@gmail.com> wrote:

one comment that struck me on other post is that RAMPs should be powered before Laser PSU , that discards the ability to use the 24V via a dc converter to 12 to power RAMPs.

This was due to Laser ON signal being triggered momentarily, until the pull up brings the signal up. I will have to experiment. I have same schematics work in progress for smoothie board, which is on the way.

Oh that'd be awesome !

I have updated the schematics with the 12V rail, which powers Fans, LED rails, and perhaps Heat exchanger fan for the water pump.

jegb

On Friday, October 30, 2015 at 6:43:50 PM UTC+1, TealVince wrote:
Very cool! I'm gathering all my parts for a similar smoothieboard conversion. I noticed your 12V supply is pretty beefy but isn't doing much now. Is the intention to eventually move the ramps fully over to the 12V supply?

On Thursday, October 15, 2015 at 2:42:00 AM UTC-7, jegb wrote:
Hi

I have been following this group for a while, and like others I am modifying my laser cutter heavily. My HV power supply is slightly different, but I tried to incorporate the modifications most people are interested.

Curious how we could use the water temp measurement on the Marlin firmware, since we have 3 Thermistor inputs.

I am reaching out for feedback, as there are few challenges on the design, but nothing that can not be solved, for example completely isolating the electronics from the HV power supply with opto couplers and relays.

Let me know and I will keep editing this until we are satisfied, happily can contribute to add this to an official guide.

regards,
Enrique

--
You received this message because you are subscribed to the Google Groups "Opensource Laser" group.
To unsubscribe from this group and stop receiving emails from it, send an email to opensource-las...@googlegroups.com.
Visit this group at http://groups.google.com/group/opensource-laser.
To view this discussion on the web visit https://groups.google.com/d/msgid/opensource-laser/596ee81d-2253-410e-9157-874a86a2d1db%40googlegroups.com.

For more options, visit https://groups.google.com/d/optout.