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 1 
 on: February 09, 2021, 19:53:39 
Started by tidobell - Last post by tidobell
Tom thanks for your help. It is working now.

 2 
 on: February 07, 2021, 20:06:17 
Started by tidobell - Last post by TCWORLD
Have you connected a 1k resistor between D21 and D23 as shown in the schematic?

 3 
 on: February 06, 2021, 10:42:36 
Started by tidobell - Last post by tidobell
Hello, I have build the EQMOD with arduino mega 2560. i use a laptop with window 10, firmware V3.9.3 and EASCOM V2.00q. I the toolbox the com port is found. I can load the firmware and the configuration for my mount. When that is ready, the program is trying to connect to eascom, then I get out of time message. Then I try a second time, get the same massage. When I restart the config program I cannot communicate. I choose the right com-port but no communication. By selecting configure it says no data in eeprom. The I clean the with the arduino programmer, and I can load the eeprom again. What am I doing wrong?
I tried several mega 2560 boards, but they all give the same problem.
Who can help me?

 4 
 on: January 31, 2021, 11:38:33 
Started by astrochemist - Last post by astrochemist
Hi All,

When building my MEGA astroeq I wanted a nice tidy motor board. I have designed my own and it has been very successful. The board has space for two drivers (it can be cut in half so only one driver is available). It only cost me 13 from JCLPCB (cheaper if you don't want it fast). I have attached the Gerber files so you can make your own. The motor connections are via screw terminals. The driver boards are on pin headers, I played about with different  boards and settled on the TMC2100. My first Auduino Mega had a faulty voltage regulator and took out the Arduino and driver boards!!!. I replace the driver boards (very easy) and also powered the Mega using a Voltage Step down board instead of the onboard regulator. Has worked so far!.

 5 
 on: January 31, 2021, 11:01:35 
Started by astrochemist - Last post by astrochemist
Hi,

I  have notice strange behaviour with the AstroEQ Arduino Mega and Astroberry Pi:

If I have the Astroeq powered up and plugged in to the Pi, the Pi will not boot past post. As soon as I unplug the USB cable it boots normally.

Also the Pi will draw about 100 mA from the AstroEQ via the usb cable. This would sometimes make the Pi crash. I have solved this by cutting the red wire in the USB cables.

Anybody else see this behaviour?


 6 
 on: January 23, 2021, 22:24:10 
Started by kaito83 - Last post by kaito83
Problem solved with the modified code, the sidereal is precise now.
And I recommend everybody the LV8729 driver and stepper motor smooth like a DC motor after this change.
I also uploaded the modified hex.

 7 
 on: January 22, 2021, 14:47:00 
Started by kaito83 - Last post by kaito83
I Found the code
                case 32:
                    // 1/32
                    modeState[SPEEDNORM] = (( HIGH << MODE2) | ( HIGH << MODE1) | ( HIGH << MODE0));
                    // 1/4
                    modeState[SPEEDFAST] = ((  LOW << MODE2) | ( HIGH << MODE1) | (  LOW << MODE0));
                    break;

Dear Tom,

Could You fix your DRV8825 code to this
modeState[SPEEDNORM] = (( HIGH << MODE2) | ( LOW<< MODE1) | ( HIGH << MODE0));

permanently because DRV8825 is also operate in HLH in 1/32.
In the future will be compatible with LV8729 and stepper is very smooth like DC motors.

Best Regards Tamas

 8 
 on: January 22, 2021, 11:32:49 
Started by kaito83 - Last post by kaito83
Dear Tom,

I recently changed to LV8729 drivers, unfortunately the bad whether I cannot test the equipment, but It's look like the sidereal is quarter of the normal.
The driver specs same as the drv8825 the 1/32 (High   Low   High) and 1/4 (Low   High   Low ).
The goto positioning is OK when I tells to the mount goes to DEC90 to 0 is fine same as RA, with hours, but I switch to sidereal it moves quarter.
example Sidereal start from 0 RA after 1 hours its reach only 0/quarter point.
I have to modify the firmware or what I'm doing wrong or is this just a mistake by myself?

Regards Tamas

 9 
 on: January 19, 2021, 20:33:15 
Started by Dr_Ju_Ju - Last post by TCWORLD
Great. Glad it's sorted.

 10 
 on: January 18, 2021, 10:30:00 
Started by Dr_Ju_Ju - Last post by Dr_Ju_Ju
Morning Tom,

Adding the 1k resistor worked !!   yay back in business, thanks for your help !!

Julian

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