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1
DIY AstroEQ / RTC calibration
« on: January 05, 2017, 22:59:45 »
Hi Tom,
some time ago you mentioned the poor accuracy of the ceramic resonator as time base of the Arduino Atmega2560 board to be more than 1000ppm. Would it be possible to calibrate the board by using a RTC device, e. g. the DS3231 from Maxim? I think this would help all DIY builders among us who are missing the excellent stability of 10ppm of your original AstroEQ board!?
Andreas
some time ago you mentioned the poor accuracy of the ceramic resonator as time base of the Arduino Atmega2560 board to be more than 1000ppm. Would it be possible to calibrate the board by using a RTC device, e. g. the DS3231 from Maxim? I think this would help all DIY builders among us who are missing the excellent stability of 10ppm of your original AstroEQ board!?
Andreas
2
DIY AstroEQ / Re: Standalone Operation
« on: February 03, 2016, 22:17:18 »
Thank you, Tom! It's working fine now!
Regarding the sidereal rate, I'v stumbled upon it when I measured the frequency of the RA motor on. I'm working with two Arduino Mega boards and they show slightly different frequencies. Maybe the oscillators vary too much.
Andreas
Regarding the sidereal rate, I'v stumbled upon it when I measured the frequency of the RA motor on. I'm working with two Arduino Mega boards and they show slightly different frequencies. Maybe the oscillators vary too much.
Andreas
3
DIY AstroEQ / Re: Standalone Operation
« on: February 03, 2016, 21:21:12 »
I've found out that I have to execute the command
It seems to be necessary to initialize some things for normal speed mode?
Andreas
Code: [Select]
Commands_configureST4Speed(CMD_ST4_STANDALONE); //Change the ST4 speeds when starting in standalone mode, also if I'm not explicitely coming from highspeed mode.It seems to be necessary to initialize some things for normal speed mode?
Andreas
4
DIY AstroEQ / Re: Standalone Operation
« on: February 03, 2016, 20:44:34 »
Hi Tom,
after a first glance with my oscilloscope the automatic tracking starts now if standalone mode selected! The only thing I still have to check is the speed option. My tracking rate is 2x at the moment, regardless which mode was selected. Maybe a wiring fault in my board...?!
BTW, do you use the real sidereal rate for the calculation of the rotation speed? On my board it seems to be one RA rotation in exactly 24 hours. Isn't it better to compensate by the factor 364/365?
Thanks
Andreas
after a first glance with my oscilloscope the automatic tracking starts now if standalone mode selected! The only thing I still have to check is the speed option. My tracking rate is 2x at the moment, regardless which mode was selected. Maybe a wiring fault in my board...?!
BTW, do you use the real sidereal rate for the calculation of the rotation speed? On my board it seems to be one RA rotation in exactly 24 hours. Isn't it better to compensate by the factor 364/365?
Thanks
Andreas
5
DIY AstroEQ / Re: Standalone Operation
« on: February 02, 2016, 23:03:58 »
Ok, I'll wait for your bugfix.
Thank you & good luck!
Andreas
Thank you & good luck!
Andreas
6
DIY AstroEQ / Re: Standalone Operation
« on: February 02, 2016, 21:59:32 »
Hi Tom,
thank you for the code. If I switch to standalone mode after startup without EQMOD, the motors don't start working. If I start sidereal mode in EQMOD, it works perfect again!
Any ideas?
Andreas
thank you for the code. If I switch to standalone mode after startup without EQMOD, the motors don't start working. If I start sidereal mode in EQMOD, it works perfect again!
Any ideas?
Andreas
7
DIY AstroEQ / Re: Standalone Operation
« on: February 01, 2016, 23:00:48 »
Hi Tom,
do you have a first test version of the firmware for me with the new feature? I would need the source code version, because I've done some changes to the pinmap of the arduino and other changes.
Thank you!
Andreas
do you have a first test version of the firmware for me with the new feature? I would need the source code version, because I've done some changes to the pinmap of the arduino and other changes.
Thank you!
Andreas
8
DIY AstroEQ / Re: Standalone Operation
« on: December 08, 2015, 21:57:41 »
Hi Tom,
my favourite solution would be the additional switch for the two operating modes. I've built the PCB myself, so it's not really a problem to add the switch.
I guess, the only reliable way for the first proposal would be to add a "strong" pullup resistor <10k to the PCB. So, in both cases it's necessary to rework the hardware!?
Andreas
my favourite solution would be the additional switch for the two operating modes. I've built the PCB myself, so it's not really a problem to add the switch.
I guess, the only reliable way for the first proposal would be to add a "strong" pullup resistor <10k to the PCB. So, in both cases it's necessary to rework the hardware!?
Andreas
9
DIY AstroEQ / Standalone Operation
« on: December 07, 2015, 21:32:22 »
Hi all,
let me open a separate topic besides the hand controller discussion:
Is it possible to modify the AstroEQ firmware to start at sidereal tracking rate immediately after powerup?
Let me explain a bit: Sometimes I'm using the mount for a simple "guiding" of my wide angle lenses. In this setup I don't want to use a PC/laptop at my observing location.
cs, Andreas
let me open a separate topic besides the hand controller discussion:
Is it possible to modify the AstroEQ firmware to start at sidereal tracking rate immediately after powerup?
Let me explain a bit: Sometimes I'm using the mount for a simple "guiding" of my wide angle lenses. In this setup I don't want to use a PC/laptop at my observing location.
cs, Andreas
10
Capabilities Question / Re: Remote Access
« on: June 20, 2015, 14:48:04 »
Hi Tom,
you're right, why reinvent the wheel? I'll better buy such a converter and start immediately
Thanks
Andreas
you're right, why reinvent the wheel? I'll better buy such a converter and start immediately
Thanks
Andreas
11
Capabilities Question / Remote Access
« on: June 18, 2015, 21:54:38 »
Hi there,
I'd like to control my garden observatory remotely from indoor using my home network. My first attempt using a tiny PC integrated into the mount running XP was quite annoying due to some limitations.
So I came to the question: Why not use a ethernet shield on my mega 2560 arduino to create a virtual, ethernet based COM port (using com0com on the Windows side)? My first tests were quite promising, but I ended up at the integration into AstroEQ. Unfortunately I couldn't a way to include some arduino libs into the AstroEQ project.
Any ideas?
Thank you
Andreas
I'd like to control my garden observatory remotely from indoor using my home network. My first attempt using a tiny PC integrated into the mount running XP was quite annoying due to some limitations.
So I came to the question: Why not use a ethernet shield on my mega 2560 arduino to create a virtual, ethernet based COM port (using com0com on the Windows side)? My first tests were quite promising, but I ended up at the integration into AstroEQ. Unfortunately I couldn't a way to include some arduino libs into the AstroEQ project.
Any ideas?
Thank you
Andreas
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