Bipolar Microstep 48 volt 5Amp /phase, 4 axis board

[kreutz]

Any interest in a bipolar micro-step 5 Amp/phase 48 volts (maximum), 4 Axis board?

Specs:

Micro-step mode:

Full, half, 1/4, 1/8, 1/5, 1/10 and 1/16

Automatic maximum torque feature (peak to RMS compensation) depending on stepping mode and speed.

Micro-step reference waveform "morphing" depending on speed.

Independent screw terminal outputs for unused PC parallel port pins.

Charge pump (software monitoring feature) on board (for Mach3).

Over-Current, over-temperature and over-voltage protection per axis.

Opto isolated Step /Direction and Enable signals.

Target introductory prices:

Kit: $140.00

Assembled and tested: $180.00

The board is based on an improved version of the "Mardus-Kreutz" translator.

[atlab]

Any interest in a bipolar micro-step 5 Amp/phase 48 volts (maximum), 4 Axis board?

...
The board is based on an improved version of the "Mardus-Kreutz" translator.

What type of current decay (fast, slow, mixed) you are released?

[kreutz]

What type of current decay (fast, slow, mixed) you are released?

Mixed current decay, % mixed decay proportional to motor speed.

[Lnz69]

All 4 axis for $140 ??
Very interesting !
Are you using always mosfet like IRF.... ??

[max_imum2000]

i think that will fill in a gap,
with that price it will be great
tell us more
are you using fets? or driver ic ?
any website/pics we can take a look at it ?

thanks

[kreutz]

All 4 axis for $140 ??
Very interesting !
Are you using always mosfet like IRF.... ??

No, this time it is an integrated solution. The prices are target prices, I hope we won't have to increase them, it all depends on demand.

[kreutz]

i think that will fill in a gap,
with that price it will be great
tell us more
are you using fets? or driver ic ?
any website/pics we can take a look at it ?

thanks

This design effort is more about the translator's features than the power part. The whole board is still on my mind drawing board. The driver will be made of two integrated H bridges per axis and a dual chopper. The translator is what includes almost all the features.

I just want to know if it had some acceptance before committing my time to this design. The whole idea came out while trying to help a fellow engineer, who was laid off last week (and needs the income). In order to make sure this is going to help her, I need to know if it has some demand in our community.

[ger21]

I'd sell my Xylotex and buy one. Then I could run my motors at 4.6 amps bipolar parallel instead of 2.3 amp series and probably double my top speed.

[max_imum2000]

sorry but what is a translator ?

i would say go for it, i will remove my 2 hobbycnc boards and use yours , power with these unipolar motor will surly increase.

but i think you should also provide 3 axis board with even less price
as 35$/axis
maybe the 3 axis board should be 100$ or so for the kit.

keep on the good news

[SCHootie]

I think you'd have a lot of interest. Most of the steppers I've considered aren't being fully utilized using the available drives barring the Gecko's.

[phantomcow2]

If you can do it, it would be pretty nice. I would get one for sure

[kreutz]

sorry but what is a translator ?

i would say go for it, i will remove my 2 hobbycnc boards and use yours , power with these unipolar motor will surly increase.

but i think you should also provide 3 axis board with even less price
as 35$/axis
maybe the 3 axis board should be 100$ or so for the kit.

keep on the good news

The translator is the part of the driver that converts Step-Direction input into the mosfet driver switching sequence and provides the reference waveforms for micro-stepping. In our case it does a little more than that, because of the morphing and automatic peak to RMS reference compensation depending on the micro-step mode (what we call automatic torque compensation) also takes care of the Fast/Slow/Mixed decay selection depending on the step sequence quadrant and speed.

Since it is intended to be both, a kit and assembled board, you can get a kit and depopulate the fourth axis. If you get the assembled board you can disable any of the them.