Sky-Tech SK3D-control V8.2 board

I have 2 sky-tech sky-maker A2 printers and one sky-maker A1.

they came with the sky-tech SK3D-control V8.2 boards however sky-tech seems to be out of business. All the links to the videos are dead and the company information page seems to have no postings after 2015.

I don't think i can get the original firmware for the printers. One has replicator V7.5 on it but the stepper motors don't work.

The board is
- 24V, ATMEGA1280
- has 5 stepper outputs/drivers,
- 2 ISP ports,
- 1 UART port, a port with labeled "Thermocouples" with A and B inputs,
- 2 ports with heater and fan connectors for each extruder,
- a port for the bed heater,
- a 4 pin port labeled "HBP-THERM",
- X/Y/Z max and min ports for end stops (4 pin each),
- USB port,
- power switch
- reset button.
- there is also a port labeled "EXTRA" with 4 pins: 24v, R, G, B, I assume this is for an LED strip.
- came with A4982SLPT stepper drivers

I am wondering if anyone knows anything about this board and how i could set it up in marlin?

thank you

I think this company is out of business but i did find the manual for them.

[www.sky-tech.com.tw]

The electronics are unknown. The only way to reuse this with marlin would be to reverse engineer the controller.

Ie work out what pins are connected to what and create a new pins file for it.

Quote
Dust
The electronics are unknown. The only way to reuse this with marlin would be to reverse engineer the controller.

Ie work out what pins are connected to what and create a new pins file for it.

I'm fairly new to all this.. Could i do that using a multi-meter set to test continuity? then place one end on the pin i want to map and go to the chip and find where there is continuity?

yes, that and visual tracing of tracks (some will be obvious)

Once you have this you then have to translate from physical pins to arduino pin names. There are many diagrams on the internet on how to do this.

Edited 1 time(s). Last edit at 11/07/2019 09:04PM by Dust.

I did some looking and found that the mighty board looks very similar to my board.

I attatched some pics of the board as well as some i found online of the mighty board

differences I can see:

- ISP ports are not in the same place. one is close but the other is next to the first on the mighty board and no where close on mine.
- "EXTRA" port on my board is a 4 pin +RGB and the mighty board has a fan 2 pin and an "extra" 2 pin in its place.
- No pins on the middle of the board next to the UART interface and Z-min/Z-max ports
- power supply area slightly different
- my board has no sd card slot.
- not "cut-off" port on my board

Is it close enough that i could use the mighty board profile?

What about using an SKR V1.3 board? its 32-bit and cheap.

can I use the screen and drivers I already have? The drivers say A4982SLPT on the chip, can I use the A4988 setting in Marlin for these?

It could be a clone of the mighty board

Try setting up marlin with a mightyboard and see .. but make sure you dont plug in anything that gets hot in the first tests....

"SKR V1.3 board?"
you would have to change all your plugs and check all your components are compatible...
no idea on these driver chips or your lcd...
That is a even bigger job than tracing out the board.