Geeetech

Hello,

I got the new Revision A+. I want to install the Auto bed Level sensor. There is a new connector on the board for this sensor, but I did not find any description, which pin of the Controller is connected to this connector. Please update the available schematic or give us the required Information, thanks

Did you notice this file
3DTouch auto leveling sensor User Manual version2.0.zip
on the following page:
https://www.geeetech.com/geeetech-3dtou ... -1010.html
It mentions Rev A+ in the manual.

thank you,

this answers my question

Hi,

can someone share the schematic of the GT2560 Rev A+?
I only found the schematic for the GT2560 A, I like to use ICSP to upload the firmware and i'm not shure if the pin layout is still the same.
Or could at least someone confirm that the pin layout on the Rev A+ is the same as on Rev A?

Pin layout for GT2560:
http://reprap.org/wiki/Geeetech_GT2560

Pin layout for GT2560 A?




Schematic for GT2560 A as PDF:
download/file.php?id=532

Hi,

Is there an updated schematic for the new boards? Including Q4?

Kind regards

Joris

[quote=molekuul post_id=82466 time=1517823727 user_id=63629]
Hi,

Is there an updated schematic for the new boards? Including Q4?

Kind regards

Joris
[/quote]

I'd also like to have the schematics corresponding to GT2560A+. I am trying to:

- Add PID/PWM control to some of the fans. According to download/file.php?id=532, none of the fan connectors does actually use the RPM signal. Furthermore, only one of them is driven by a transistor. Is it the same in A+?
- Add a joystick as a complement/replacement to the encoder in the LCD. From the same source, it seems that only ADC0, ADC1, ADC8, ADC9 and ADC10 are used. Are ADC2-7 and ADC11-15 free to be used?

[quote=1138 post_id=82514 time=1518054006 user_id=63820]

I'd also like to have the schematics corresponding to GT2560A+. I am trying to:

- Add PID/PWM control to some of the fans. According to download/file.php?id=532, none of the fan connectors does actually use the RPM signal. Furthermore, only one of them is driven by a transistor. Is it the same in A+?
- Add a joystick as a complement/replacement to the encoder in the LCD. From the same source, it seems that only ADC0, ADC1, ADC8, ADC9 and ADC10 are used. Are ADC2-7 and ADC11-15 free to be used?
[/quote]

I would also like to find the schematics for the A+ board, but I think it isn't that simple because there is at least three different versions of this board. I have three A+ and all look slightly different and all have some part variation.

I fried one of mine through accidentally shorting the 12V fan output, as a result all the fan outputs suddenly got 24V and not 12V. Initially I thought that the A and A+ boards were similar in this respect and so I thought that the D17 was causing the issue and looked for that diode but could not find it. In a desperate try I removed the 7812 thinking that OK, there is no D17 at all... so the 7812 was bad, but no... then I checked a little more and seen the Q4 (A5sHB p-chanel FET) right of the 7812, checked and noticed that it was bad. After I removed it the board is working 100%. I ordered new parts and that's it, it is now repaired but for the future... it would be good to have the schematics.

BTW, you are incorrect about the lack of PWM. It works but only with one fan.

[attachment=0]GT2560-PWM.jpg[/attachment]

If it is not working for you then you might have the wrong Marlin configuration.

hi, i got a Geeetech Prusa i3 Pro B.

I misure 5v on pwm fan pin when in repetier host the fan is set to 100%.

is this normal ? or i must read 12v?

hi, I have a geeetech prusa i3 pro b.
on the pwm fan pin i got 5v when repetier host was set at 100% fan.

is it normal or i must have 12v?

[quote=5a2v0 post_id=84664 time=1529413397 user_id=66394]
hi, I have a geeetech prusa i3 pro b.
on the pwm fan pin i got 5v when repetier host was set at 100% fan.

is it normal or i must have 12v?
[/quote]

Yes, it should be 5V for Pro B.