Are there unconnected pins on the Sanguinololu?

vad7
Posts: 28
Joined: Sun Mar 29, 2015 1:08 pm

Are there unconnected pins on the Sanguinololu?

Post by vad7 » Wed Apr 15, 2015 9:44 pm

I want to do auto bed leveling and need available pin for servo.
Board is Sanguinololu 1.3a with LCD 2004 connected.

zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by zhangxueyou » Thu Apr 16, 2015 9:17 am

Sorry, Sanguinololu has not this function.

vad7
Posts: 28
Joined: Sun Mar 29, 2015 1:08 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by vad7 » Thu Apr 16, 2015 1:48 pm

Ok, I think I may use "beep" pin.

Another question.
I ordered GT2560 board. Could you send me a schematic diagram for this board?


vad7
Posts: 28
Joined: Sun Mar 29, 2015 1:08 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by vad7 » Thu Apr 16, 2015 2:08 pm

It is a connection diagram.
I need a electric scheme to know which pins of the microcontroller can I use for my purposes.

zhangxueyou
Posts: 1405
Joined: Fri Feb 06, 2015 1:33 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by zhangxueyou » Thu Apr 16, 2015 2:42 pm

GT2560_GERBER.zip
(2.66 MiB) Downloaded 2959 times
GT2560_sch.zip
(936.89 KiB) Downloaded 15256 times

vad7
Posts: 28
Joined: Sun Mar 29, 2015 1:08 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by vad7 » Thu Apr 16, 2015 2:59 pm

Thanks!

lukie80
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Joined: Mon Mar 28, 2016 8:12 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by lukie80 » Mon Mar 28, 2016 8:54 pm

For people who do not have the possibility to open Gerber files I have made a simple colored wiring schematic / diagram of the GT2560 board. Note: There are two different GT2560 boards out there: "Rev. A" and "unnamed".

Looks like the heatbed can be supplied independently by rail 1. Hotends, stepper drivers, fans and logic are supplied by rail 2.

In contrast to RAMPS the wiring of the GT2560 opens the option to literally cut the supply to the steppers: It would be possible to solder a step-down converter to the cut stepper supply to operate the steppers at 8.5V. It might be beneficial to optimize the motor voltage. Some people report that due to the blanking-time there is a current-overshoot which originates from a high supply voltage together with a low impedance motor. This results in skipped steps. See this good article here.

[Edit] I have successfully cut the +12V lane to the stepper drivers and used a DC boost converter to apply +24V to the TMC2100 stepper drivers. Works well so far. The cut is located next to the pin header for extruder #2.
Attachments
GT2560 wiring.zip
Two large images are inside.
(1.27 MiB) Downloaded 2789 times

agilliam
Posts: 8
Joined: Mon Jun 22, 2015 9:20 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by agilliam » Sat Sep 24, 2016 1:44 pm

Can someone tell me what transistor and Q4 is. Mine blee and according to my friends it shows A591. However I cannot find anything on this. This is a small 3 pin down by extruded 2's stepper driver by the 12v pins. It's right near the leg of the 12v reg.

agilliam
Posts: 8
Joined: Mon Jun 22, 2015 9:20 pm

Re: Are there unconnected pins on the Sanguinololu?

Post by agilliam » Sat Sep 24, 2016 1:48 pm

I think I found what Q4 is. If someone can confirm it would be great. It looks like a A59T.. A59T 2.6A/30V SOT23 P-Channel MOSFET SMD transistor

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