Mega2560 + LCD 12864 Graphic Smart Display Controller Module + Ramps 1.4 Mega Shield+A4988 Stepstick

Electronics, Components etc
bentech4u
Posts: 47
Joined: Mon Aug 28, 2017 4:07 pm

Re: Mega2560 + LCD 12864 Graphic Smart Display Controller Module + Ramps 1.4 Mega Shield+A4988 Stepstick

Post by bentech4u » Wed Aug 30, 2017 2:44 pm

[/quote]

Well you could do worse than a Prusa i3 clone. For example, Tom's Dolly.
[/quote]

https://toms3d.org/2017/02/23/building- ... sa-i3-mk2/
is this the one you referred ?

chumm
Posts: 176
Joined: Thu Jun 15, 2017 11:24 am

Re: Mega2560 + LCD 12864 Graphic Smart Display Controller Module + Ramps 1.4 Mega Shield+A4988 Stepstick

Post by chumm » Wed Aug 30, 2017 7:29 pm

slippyr4 wrote:
Wed Aug 30, 2017 8:52 am
That's not a good way to set the motor current. I've got polulu drivers where clockwise increases the current and some where it decreases it, they vary. If you work blind as you suggest you risk destroying a driver or motor.
He said he has A4988s, they go clockwise. DRV8825s go counterclockwise.
bentech4u wrote:
Wed Aug 30, 2017 2:44 pm
https://toms3d.org/2017/02/23/building- ... sa-i3-mk2/
is this the one you referred ?
Yes that's Dolly, it is not a great design but there is a good amount of information and support from people here who have made them.

slippyr4
Posts: 224
Joined: Thu Jun 15, 2017 10:24 am

Re: Mega2560 + LCD 12864 Graphic Smart Display Controller Module + Ramps 1.4 Mega Shield+A4988 Stepstick

Post by slippyr4 » Wed Aug 30, 2017 8:16 pm

chumm wrote:
Wed Aug 30, 2017 7:29 pm
He said he has A4988s, they go clockwise. DRV8825s go counterclockwise.
It's still a poor way to set stepper currents.
Self-built Prusa i3 MK2 clone
My things: https://www.thingiverse.com/slippyr4/designs
My Prusa firmware port for ramps & MKS : https://github.com/slippyr4/Prusa-Firmware

bentech4u
Posts: 47
Joined: Mon Aug 28, 2017 4:07 pm

Re: Mega2560 + LCD 12864 Graphic Smart Display Controller Module + Ramps 1.4 Mega Shield+A4988 Stepstick

Post by bentech4u » Thu Aug 31, 2017 8:46 am

for dolly, The frame is wood, i dont have wood cutter and all and in this counrty very difficult to find shops for that,

i will try to make the frame in aluminum.

Regards,
Ben

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