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DIY AstroEQ / Re: Connection in Linux
« on: June 12, 2015, 01:36:16 »
I've got arduino focuser on top of the AstroEq and the linux assigned different port every time so had to update the udev rules with a new one - make a new file for exapmple 52-arduino.rules and put the following line in it : SUBSYSTEMS=="usb", KERNEL=="ttyACM[0-9]*", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="0042", ATTRS{serial}=="853343330323516091C1", SYMLINK+="ttyS80"
You can omit some of the attributes but in case you connecting 2 Megas can be sure that the correct one will be always ttyS80.
You can omit some of the attributes but in case you connecting 2 Megas can be sure that the correct one will be always ttyS80.
2
DIY AstroEQ / Re: DIY PCB and Bluetooth support for Arduino version
« on: June 12, 2015, 01:19:54 »
Hello guys! I've managed to add HC-06 to my Arduino based AstroEQ. Everything(EQmod,CDC,PHD2,Astrotortilla) works very well under windows except 2 minor nuisances. 1. Can not use the upload utility (through the usb connection)while the bluetooth is connected. 2.You need an administrative privileges to access the port once the connection is established.
The first one I have to investigate what will happen if I try to unpair. The second one is probably problem with the driver and/or windows 8.
Less than a month ago I've bought AstroEQ V4.4 from Tom, but I am so happy with my Bluetooth Arduino version that crossed my mind what will work if I squeeze in bluetooth module in the original box and connect it to R15 and R16?
The first one I have to investigate what will happen if I try to unpair. The second one is probably problem with the driver and/or windows 8.
Less than a month ago I've bought AstroEQ V4.4 from Tom, but I am so happy with my Bluetooth Arduino version that crossed my mind what will work if I squeeze in bluetooth module in the original box and connect it to R15 and R16?
3
Mount Support / Re: 0.9 deg stepper on eq5
« on: June 01, 2015, 01:16:56 »
Thanks Tom, I'm quite happy with current setup although still unable to test on guiding(the weather is rubbish here in London).
The rig is powerful like a tank and once synchronised with astro tortilla puts the targets spot on the centre. In fact it is so powerful that I'm unable to stop it by hand and the worm cradles start to flex
.
The rig is powerful like a tank and once synchronised with astro tortilla puts the targets spot on the centre. In fact it is so powerful that I'm unable to stop it by hand and the worm cradles start to flex
.
4
Mount Support / 0.9 deg stepper on eq5
« on: May 31, 2015, 01:33:54 »
Received the controller Monday! Thanks Tom.
stright away had to do some upgrade cause I'm using 1.7 amp 1.8 deg nema 17. I've cut two 10x10mm openings on the back panel to suit the heat sinks for drv8825 and increase the current to 1.7amp. Then I decided to try with 0.9 deg stepprrs. My gears are 144
Worm ratio, 4:1 gear. The setup utility came up with warning when tried to use 32microsteps. Something like iVal too small. I've ignored it. On the test, mount behaved Ok, but when i tried goto target in CdC it over shoot a lot. When slewing from eqascom its ok. So decided to go for 16microsteps : everything works fine except the point of using 0.9 deg stepprrs is defeated.
stright away had to do some upgrade cause I'm using 1.7 amp 1.8 deg nema 17. I've cut two 10x10mm openings on the back panel to suit the heat sinks for drv8825 and increase the current to 1.7amp. Then I decided to try with 0.9 deg stepprrs. My gears are 144
Worm ratio, 4:1 gear. The setup utility came up with warning when tried to use 32microsteps. Something like iVal too small. I've ignored it. On the test, mount behaved Ok, but when i tried goto target in CdC it over shoot a lot. When slewing from eqascom its ok. So decided to go for 16microsteps : everything works fine except the point of using 0.9 deg stepprrs is defeated.
5
DIY AstroEQ / Custom EQ5 AstroEQ (Mega 2560) PHD2 troubles
« on: May 12, 2015, 14:56:00 »
About 6 months ago I've build the Mega2560 version with drv8825. Nema17 1.8deg and belt mode MXL 60:15. I have to say I am impressed and very happy with the results except for some inconsistencies working with PHD2. The AstroEQ settings are
Axis steps/rev -3 686 400
worm stteps /rev - 25600
sidereal speed Ival - 310
resolution - 0.352
The thing is that some times I manage to get guiding within 1arc"(even without proper polar alignment) , but in most of the cases the guiding within 16arc". I've noticed -during calibration the dec does not respond the same way as Ra. Bare in mind the mount works perfectly with CdC and sync with astrotortilla it slew, goto - every time spot on the cross-hair. I'm using the standard SW 9x50 finder as a guide and either icx098 or ICX414 as a CCD and for this setup the PHD calculates calibration pulse >1000ms. I've tried manual guiding and when the guiding pulse is too big and overlap the DEC motor start grinding in place. when I use short pulses separated - the mount moves as expected. I've put intentionally wrong data in calibration pulse calculator(Longer focal length 1000mm instead of 170mm) and then - magic :the calibration goes fine. I am not familiar how phd sends the guiding pulses, but there must be some discrepancies or the problem could be with my build ?
Axis steps/rev -3 686 400
worm stteps /rev - 25600
sidereal speed Ival - 310
resolution - 0.352
The thing is that some times I manage to get guiding within 1arc"(even without proper polar alignment) , but in most of the cases the guiding within 16arc". I've noticed -during calibration the dec does not respond the same way as Ra. Bare in mind the mount works perfectly with CdC and sync with astrotortilla it slew, goto - every time spot on the cross-hair. I'm using the standard SW 9x50 finder as a guide and either icx098 or ICX414 as a CCD and for this setup the PHD calculates calibration pulse >1000ms. I've tried manual guiding and when the guiding pulse is too big and overlap the DEC motor start grinding in place. when I use short pulses separated - the mount moves as expected. I've put intentionally wrong data in calibration pulse calculator(Longer focal length 1000mm instead of 170mm) and then - magic :the calibration goes fine. I am not familiar how phd sends the guiding pulses, but there must be some discrepancies or the problem could be with my build ?
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