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DIY AstroEQ / Re: Help with first connection
« on: July 06, 2015, 21:57:32 »
The solution was simple, remove the driver as you described, reconnect and reinstall and everything was as it is supposed to be.
Next thing was setting the current limit, I tried both methods, but turning the potentiometer (left or right, big or small turn) has no effect on the voltage at the measuring point, with or without stepper motor, the voltage remains the same.
And as expected the stepper gets warm after a while.
Any idea?
Next thing was setting the current limit, I tried both methods, but turning the potentiometer (left or right, big or small turn) has no effect on the voltage at the measuring point, with or without stepper motor, the voltage remains the same.
And as expected the stepper gets warm after a while.
Any idea?
2
DIY AstroEQ / Re: Help with first connection
« on: June 18, 2015, 20:59:17 »
Oké, tonight I've been trying again and in the device manager I haven't changed a thing, but on both computers I've tried the AstroEQ controller with everything looks as if it works. De AstroEQ serial port has disappeared but a generic serial port has appeared and thats the right port to use.
So everything looks as if it will work, next step it connecting the steppers.
Thank you for the support and explanation, I'll return when I've connected and tried the steppers.
So everything looks as if it will work, next step it connecting the steppers.
Thank you for the support and explanation, I'll return when I've connected and tried the steppers.
3
DIY AstroEQ / Re: Help with first connection
« on: June 16, 2015, 21:51:57 »
It says "Device will not start (code 10)"
Today, ik tried to connect the controller to my astro laptop. At first I got the same result, but when I looked in the device manager there was a second AstroEQ serial port but without the driver. See the first picture. I selected that serialport and installed the driver (happened automatic) and that port started without an error. See the next attached pic.
Using that port the USB LED flashes rapidly, but when I started the config utility it still couldn't make a connection to the controller (See the same pic.)
Last question I have for now, when I start the Config utility I do not get a button start as shown in the tutorial. See the last pic.
Today, ik tried to connect the controller to my astro laptop. At first I got the same result, but when I looked in the device manager there was a second AstroEQ serial port but without the driver. See the first picture. I selected that serialport and installed the driver (happened automatic) and that port started without an error. See the next attached pic.
Using that port the USB LED flashes rapidly, but when I started the config utility it still couldn't make a connection to the controller (See the same pic.)
Last question I have for now, when I start the Config utility I do not get a button start as shown in the tutorial. See the last pic.
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DIY AstroEQ / Help with first connection
« on: June 15, 2015, 21:39:07 »
Today I finished building the board en tried to connect it to een Win7 PC.
First I connected the 12V, the power LED becomes solid red.
Then I connected the USB cable, at the PC wouldn't recognize the device, so I installed the driver as mentioned in the tutorial "Using the configuration utility".
It installed the driver, but the device manager reports an exclamation for the "AstroEQ mount Controller (COM3)."
Switching off the power and removing the USB connection for ten seconds and trying again has no result.
Once the USB LED was flasing, then I tried to run the configuration utility and uploaded the firmware, but still the computer won't reconize it. I can choose COM1 and COM4, but not COM3 and that where the device manager says the controller is.
Looking at the controller at the moment, POWER and STATUS are lid, USB flashes and I cannot find the meaning of the LEDs.
Please help.
First I connected the 12V, the power LED becomes solid red.
Then I connected the USB cable, at the PC wouldn't recognize the device, so I installed the driver as mentioned in the tutorial "Using the configuration utility".
It installed the driver, but the device manager reports an exclamation for the "AstroEQ mount Controller (COM3)."
Switching off the power and removing the USB connection for ten seconds and trying again has no result.
Once the USB LED was flasing, then I tried to run the configuration utility and uploaded the firmware, but still the computer won't reconize it. I can choose COM1 and COM4, but not COM3 and that where the device manager says the controller is.
Looking at the controller at the moment, POWER and STATUS are lid, USB flashes and I cannot find the meaning of the LEDs.
Please help.
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DIY AstroEQ / Re: Which handcontroller would be best for testing functionality without PC
« on: June 13, 2015, 19:59:03 »
Oke, thank you for your fast reply.
I will buy one from somebody who has one left, then I'll try to find out what the pin-out is, that shouldn't be hard. You mentioned it shoud be TTL level, I lack the equiipment to measure that so I hope I can find that on the net or deduct it from the electronic parts that connect to the cable.
Then I'll try to connect it as you mentioned in an other, when that won't work I'll report back, just as I will when I find out how it works.
I will buy one from somebody who has one left, then I'll try to find out what the pin-out is, that shouldn't be hard. You mentioned it shoud be TTL level, I lack the equiipment to measure that so I hope I can find that on the net or deduct it from the electronic parts that connect to the cable.
Then I'll try to connect it as you mentioned in an other, when that won't work I'll report back, just as I will when I find out how it works.
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DIY AstroEQ / Which handcontroller would be best for testing functionality without PC
« on: June 13, 2015, 13:11:11 »
I've recieved almost all parts to build my AstroEQ controller, only the steppers are still on there way.
There is a topic on this forum regarding a question if a handcontoller could be used. It says is not tested, but with some small changes a handcontroller could be connected. What handcontroller would be best? A syntrek or the more simple square one, with the square buttons for a dual axis motor drive?
There is a topic on this forum regarding a question if a handcontoller could be used. It says is not tested, but with some small changes a handcontroller could be connected. What handcontroller would be best? A syntrek or the more simple square one, with the square buttons for a dual axis motor drive?
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DIY AstroEQ / Unsure about which stepper to buy
« on: June 08, 2015, 21:55:51 »
I'm in the proces of choosing a set of steppers to use on my Vixen New Polaris GoTo project.
I bet the save choice is this one: http://www.omc-stepperonline.com/nema-17-bipolar-stepper-12v-04a-40ncm567ozin-17hs150404s-p-14.html
For me it is a good combination of torque en weight. But the thing is that when I buy two steppers the shipping costs more than double the price, so I´ve been looking at ebay as well.
On ebay I see lots of nema 17 stappers, but most steppers with lot of torque use more than the 1,25A the DRV8825 can handle whitout heatsink.
Alternative one: http://www.ebay.nl/itm/221420132370
Alternative two: http://www.ebay.nl/itm/281633378754
The first is, for two stepper only slightly cheaper that a set from omc-stepperonline, but it's torque is also much less.
The second is much cheaper, has enough torque, but it is rated at 4,2V and the current per phase is 1,2A. When I use the stepper at 12V, can the AstroEQ controller handle the required amps and will the torque remain enough?
Until now I've been looking for a stepper with at least 360Nm torque. I imaginge that will be enough for my Vixen NP, probably more than enough, but I'm uncertain until how far I can drop the torque before it is to low.
Who can help me choose the right stepper?
I bet the save choice is this one: http://www.omc-stepperonline.com/nema-17-bipolar-stepper-12v-04a-40ncm567ozin-17hs150404s-p-14.html
For me it is a good combination of torque en weight. But the thing is that when I buy two steppers the shipping costs more than double the price, so I´ve been looking at ebay as well.
On ebay I see lots of nema 17 stappers, but most steppers with lot of torque use more than the 1,25A the DRV8825 can handle whitout heatsink.
Alternative one: http://www.ebay.nl/itm/221420132370
Alternative two: http://www.ebay.nl/itm/281633378754
The first is, for two stepper only slightly cheaper that a set from omc-stepperonline, but it's torque is also much less.
The second is much cheaper, has enough torque, but it is rated at 4,2V and the current per phase is 1,2A. When I use the stepper at 12V, can the AstroEQ controller handle the required amps and will the torque remain enough?
Until now I've been looking for a stepper with at least 360Nm torque. I imaginge that will be enough for my Vixen NP, probably more than enough, but I'm uncertain until how far I can drop the torque before it is to low.
Who can help me choose the right stepper?
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DIY AstroEQ / Re: DIfferent Schottky diode
« on: May 27, 2015, 19:38:20 »
I'm thinking of ordering this http://www.produktinfo.conrad.com/datenblaetter/150000-174999/163670-da-01-en-Diode_8TQ100.pdf Schottky diode. From what I can see the specs are almost the same, for our purpose.
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DIY AstroEQ / DIfferent Schottky diode
« on: May 26, 2015, 19:42:05 »
I'm collecting the components to build my own AstroEQ kit, for me buying at Farnell is not an options since the minimum order amount is 50 euro, and I'm not even close to that. Finding the proposed Schottky diode (CREE - C3D06065A - DIODE, SCHOTTKY, 6A, 650V, TO-220) is easy enough, but getting one shipped to my place in the Netherlands costs 8 euro. Will an other Schottky diode do, eg a 5 Amps 100Volt or 10 Amps 45Volt?
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