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1
DIY AstroEQ / Re: New build Software?
« on: March 11, 2023, 09:23:33 »
Hi Tom,
Thanks for your reply. I got the DRV 8825 motor drivers from: https://kunkune.co.uk/shop/accessories/drv8825-stepper-motor-driver-with-heatsink/. If you can recommend another UK supplier, I'd be happy to order more from them.
Mike
Thanks for your reply. I got the DRV 8825 motor drivers from: https://kunkune.co.uk/shop/accessories/drv8825-stepper-motor-driver-with-heatsink/. If you can recommend another UK supplier, I'd be happy to order more from them.
Mike
2
DIY AstroEQ / Re: New build Software - Motors getting very hot
« on: March 10, 2023, 15:52:29 »
Hi Tom
Finished the build and it works. But..... the motors get very hot, eventually so hot I can't hold them which I suspect is clearly too hot.
I came across reference to this in the following Post (Stepper motors do not operate -locked and get hot April 27 2018 from jtc125). I have the same components you recommend and exactly the same set-up as described in jtc's post, the only difference is that my motors do work in a slew test.
When I checked the voltage as described in setting Current Limit Method 2: Accurate Setting: across the red/blue circled points in the photo, I get 11.8V. which I believe should much much lower. trying to reduce the current by adjusting the motor driver potentiometer has no effect
Thinking I had a fried motor drive board, I've change the boards twice now on my 3rd board. I have 3 more boards but I'm reluctant to try again until I've raised this issue and hopefully had a reply. It all works, but eventually get too hot to handle.
Any ideas?
Mike
Finished the build and it works. But..... the motors get very hot, eventually so hot I can't hold them which I suspect is clearly too hot.
I came across reference to this in the following Post (Stepper motors do not operate -locked and get hot April 27 2018 from jtc125). I have the same components you recommend and exactly the same set-up as described in jtc's post, the only difference is that my motors do work in a slew test.
When I checked the voltage as described in setting Current Limit Method 2: Accurate Setting: across the red/blue circled points in the photo, I get 11.8V. which I believe should much much lower. trying to reduce the current by adjusting the motor driver potentiometer has no effect
Thinking I had a fried motor drive board, I've change the boards twice now on my 3rd board. I have 3 more boards but I'm reluctant to try again until I've raised this issue and hopefully had a reply. It all works, but eventually get too hot to handle.
Any ideas?
Mike
3
DIY AstroEQ / Re: New build Software?
« on: February 26, 2023, 18:51:30 »
Thanks Tom
Best regards
Mike
Best regards
Mike
4
DIY AstroEQ / Re: New build Software?
« on: February 25, 2023, 18:45:18 »
Hello again,
I've completed the AstroEQ build and it appears to work. By work, I mean the Power LED lights up and the USB light flashes slowly when connected to a laptop (I've not activated the Astro software on the laptop yet). I'm taking this as a good sign?
My next task is to connect the stepper motors, but I'm a bit confused. The NEMA 14 steppers have Black, Green, Red and Blue wires, The schematic shows 1A/1B and 2A/2B and the motor diagram show Blk/Grn and Red/Blu but....... I can't see any info on the correct connection sequence. E.G. does 1A = Blk, 1B = Green, 2A = Red, and 2B = Blue?
As ever your help is appreciated.
Mike
I've completed the AstroEQ build and it appears to work. By work, I mean the Power LED lights up and the USB light flashes slowly when connected to a laptop (I've not activated the Astro software on the laptop yet). I'm taking this as a good sign?
My next task is to connect the stepper motors, but I'm a bit confused. The NEMA 14 steppers have Black, Green, Red and Blue wires, The schematic shows 1A/1B and 2A/2B and the motor diagram show Blk/Grn and Red/Blu but....... I can't see any info on the correct connection sequence. E.G. does 1A = Blk, 1B = Green, 2A = Red, and 2B = Blue?
As ever your help is appreciated.
Mike
6
DIY AstroEQ / New build Software?
« on: December 31, 2022, 11:07:25 »
Hi Tom (and others),
I'm new to this forum so welcome any constructive suggestions during my DIY AstroEQ build. I've been reading the forum topics for a while now to get an understanding of what is needed but the info is spread out over a lot of topics and websites so forgive me if I ask previously asked questions.
All the parts have been delivered so the build can commence. In anticipation of completing the soldering of components correctly, I'm getting ahead of myself and thinking about the software needed for my laptop. I purchased the PCB and "Pre-Programmed I/C's" from Tom. So..... in my case, are these the correct software files I need?
EQMOD
ASCOM
Cartes Du Ceil
Do I need anything else?
Mike
I'm new to this forum so welcome any constructive suggestions during my DIY AstroEQ build. I've been reading the forum topics for a while now to get an understanding of what is needed but the info is spread out over a lot of topics and websites so forgive me if I ask previously asked questions.
All the parts have been delivered so the build can commence. In anticipation of completing the soldering of components correctly, I'm getting ahead of myself and thinking about the software needed for my laptop. I purchased the PCB and "Pre-Programmed I/C's" from Tom. So..... in my case, are these the correct software files I need?
EQMOD
ASCOM
Cartes Du Ceil
Do I need anything else?
Mike
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