Stepper support request; for curtain automation <€30
Posted: 12 Dec 2016, 01:11
Hello,
Impressed by reading about ESP Easy, great job done!
My request in short: please consider support for the universal A4988 stepper motor driver module:
- select 1 out of 5 step modes
- select direction
- give it a number of pulses
Background:
I'm currently in the conceptual design phase of automation of a set of wave curtains (4 and 2.5meter).
I have selected the Haydon AMETEK-LC1574-W linear stepper motor (15mm x 40mm).
http://www.haydonkerk.com/?TabId=86
By adapting the white cover, it can be used as a rotating stepper motor (remove the cover, saw a few mm off, and the 2mm axis can rotate freely) The 2mm axis is hidden under the black cover.
Cost €4.53, bought here(only the 4V (!) version is available):
https://nl.aliexpress.com/item/Mini-lin ... =100007153
Strong enough (7N) and accurate enough for closing a 4meter curtain with approximately 2500 steps in around 25seconds.
The stepper motor mounting on DIN rail will be done with a M12 nylon nut on the white cover.
I have selected the A4988 stepper motor driver module.
https://www.pololu.com/product/1182 Cost €0.73, bought here:
https://nl.aliexpress.com/item/5pcs-lot ... Title=true
- the A4988 has a translator for step modes: one pulse,one step.
- the Vreff adjustment enables Voltage/Current limitation (needed for the 4V/0.2A Haydon stepper).
Simple control:
- select 1 out of 5 step modes (selector inputs pin MS1, MS2, and MS3)
- select direction (DIR pin)
- give it a number of pulses (STEP pin)
A nylon fishing line will be winded/unwind-ed (at the same time) on two spools on the stepper axis:
https://nl.aliexpress.com/item/10x-Dura ... Title=true The 2mm axis goes via a shaft coupler to 5mm to hold the 2 spools.
https://nl.aliexpress.com/item/5pcs-lot ... 28631.html
The fishing line is guided by Nylon U groove ball bearings: https://nl.aliexpress.com/item/2pcs-Nyl ... Title=true
Additional needs:
- 0.3 mm breaded fishing line
- 50cm DIN rail
- project box mounted on DIN rail
- ESP board
- 2x power supply (TSP-05 and TSP-12)
- plugs (XS8 2Pin and XS8 4pin) ( https://nl.aliexpress.com/store/1724883 ... t=xs8+plug )
Total cost < €30 per curtain
For another 5 small windows of 80cm I have planned to use a 2GT belt with 2GT pulleys
https://nl.aliexpress.com/store/group/2 ... 78143.html I hope this will inspire others
and ... to get support for the A4988 stepper driver included in ESP Easy.
Thanks
Domosapiens
Impressed by reading about ESP Easy, great job done!
My request in short: please consider support for the universal A4988 stepper motor driver module:
- select 1 out of 5 step modes
- select direction
- give it a number of pulses
Background:
I'm currently in the conceptual design phase of automation of a set of wave curtains (4 and 2.5meter).
I have selected the Haydon AMETEK-LC1574-W linear stepper motor (15mm x 40mm).
http://www.haydonkerk.com/?TabId=86
By adapting the white cover, it can be used as a rotating stepper motor (remove the cover, saw a few mm off, and the 2mm axis can rotate freely) The 2mm axis is hidden under the black cover.
Cost €4.53, bought here(only the 4V (!) version is available):
https://nl.aliexpress.com/item/Mini-lin ... =100007153
Strong enough (7N) and accurate enough for closing a 4meter curtain with approximately 2500 steps in around 25seconds.
The stepper motor mounting on DIN rail will be done with a M12 nylon nut on the white cover.
I have selected the A4988 stepper motor driver module.
https://www.pololu.com/product/1182 Cost €0.73, bought here:
https://nl.aliexpress.com/item/5pcs-lot ... Title=true
- the A4988 has a translator for step modes: one pulse,one step.
- the Vreff adjustment enables Voltage/Current limitation (needed for the 4V/0.2A Haydon stepper).
Simple control:
- select 1 out of 5 step modes (selector inputs pin MS1, MS2, and MS3)
- select direction (DIR pin)
- give it a number of pulses (STEP pin)
A nylon fishing line will be winded/unwind-ed (at the same time) on two spools on the stepper axis:
https://nl.aliexpress.com/item/10x-Dura ... Title=true The 2mm axis goes via a shaft coupler to 5mm to hold the 2 spools.
https://nl.aliexpress.com/item/5pcs-lot ... 28631.html
The fishing line is guided by Nylon U groove ball bearings: https://nl.aliexpress.com/item/2pcs-Nyl ... Title=true
Additional needs:
- 0.3 mm breaded fishing line
- 50cm DIN rail
- project box mounted on DIN rail
- ESP board
- 2x power supply (TSP-05 and TSP-12)
- plugs (XS8 2Pin and XS8 4pin) ( https://nl.aliexpress.com/store/1724883 ... t=xs8+plug )
Total cost < €30 per curtain
For another 5 small windows of 80cm I have planned to use a 2GT belt with 2GT pulleys
https://nl.aliexpress.com/store/group/2 ... 78143.html I hope this will inspire others
and ... to get support for the A4988 stepper driver included in ESP Easy.
Thanks
Domosapiens