Info on parts for a motor focuser

[solarboy]

Info on parts for a motor focuser 

Hi guys

Does anybody have info' list of parts ' part numbers etc to make a motor focuser for my refractor Motors' mother boards' controlers etc.

The ones you buy are expensive to buy so I thought I would have a go at building one.  youtube shows you how to build one but I can not find clips that shows the parts and where to get them.

So thought If anybody out there  has built one they maybe beable to help.

Thanks for looking 

[angryowl]

I'm in the process of building an ASCOM motorised focuser for my RASA. This will be controlled through a USB connection but there are options to have USB and manual control as well.

I'm using the following guide https://sourceforge.net/projects/arduinoascomfocuserpro2diy/ which provides a lot of detailed information about all you need to purchase and all the options you've got. I'm using the L298N controller, an Arduino Nano and a Nema 17 200 step motor.

The RASA has a FeatherTouch microfocuser which happens to have the teeth of the fine focus knob exactly 1mm spaced apart, same as 6.35mm wide MLX belts. So I only needed to purchase a belt and a pulley for the stepper and I got them from https://www.accu.co.uk/en/ but there's also http://www.motionco.co.uk/ with a wide selection of belts and pulleys.

[zfedoran]

Here is the focuser that I'm using, it was fairly straight forward build.

 

 

Driver software:

The Arduino is recognized as a moonlite focuser.

https://www.cloudynights.com/topic/466453-super-compact-electronic-focuser/

Materials:

Note: the gears are for an AT80ED, you may need to adjust the internal diameters.

Arduino Nano: ~3.00 USD
28BYJ-48 Stepper Motor: ~2.00 USD
ULN2003 Driver Board: ~2.00 USD
150Pcs M2 M2.5 M3 M4 M5 Nylon Standoffs Kit: ~4.00 USD

HTUN144S2M-60: 5.76 USD
https://us.misumi-ec.com/vona2/detail/110302652850/?HissuCode=HTUN144S2M-60&PNSearch=HTUN144S2M-60&KWSearch=HTUN144S2M-60&searchFlow=results2type

HTPB16S2M060-K-P5-KC90: 13.96 USD
https://us.misumi-ec.com/vona2/detail/110300405850/?HissuCode=HTPB16S2M060-K-P5-KC90&PNSearch=HTPB16S2M060-K-P5-KC90&KWSearch=HTPB16S2M060-K-P5-KC90&searchFlow=results2type

HTPB40S2M100-A-P4-FC26: 22.94 USD
https://us.misumi-ec.com/vona2/detail/110300405850/?HissuCode=HTPB40S2M100-A-P4-FC26&PNSearch=HTPB40S2M100-A-P4-FC26&KWSearch=HTPB40S2M100-A-P4-FC26&searchFlow=results2type

[solarboy]

Thanks for that 

Solarboy