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27 Feb 2017
INDI development team is happy to announce the release of INDI Library v1.4.0. This new exciting release builds on the maturity of INDI Library and comes with many new supported devices and fixes for existing drivers. Several improvements and enhancements are included in this release including native support for Cygwin and MacOS platforms in addition to Linux, BSD, and Windows (Client only).
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TOPIC: I would like support of Digital Setting Circles.

I would like support of Digital Setting Circles. 1 week 2 days ago #15252

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For DSC, it is easier to refer to ALT AZ mount.
(Number of steps of encoder = 1 rotation 360 degrees)

I am using Alt Az mount with Big binoculars.

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I would like support of Digital Setting Circles. 1 week 2 days ago #15253

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The commentary on this site is easy to understand.

eksfiles.net/digital-setting-circles/compatible-software/

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I would like support of Digital Setting Circles. 1 week 2 days ago #15257

Ok so here is what I will do:

1. Add Encoder steps/resolution
2. Mount type
3. Calculate RA/DE & AZ/ALT as following

DEGREE_VALUE = (encoder_value * scale + offset) / encoder_steps * 360

Clicking "Sync", will adjust the scale + offset values (assuming they are the same for both axis). Otherwise, we'd have 1 equation with 2 unknowns if each axis has its own scale + offset.

So I'm interesting in getting the math right first before implementing anything. For now, there is a simple offset + scale for each axis.

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I would like support of Digital Setting Circles. 1 week 2 days ago #15258

T-Studio wrote: The commentary on this site is easy to understand.

eksfiles.net/digital-setting-circles/compatible-software/


All clear except for "Point Declination = 90"? Does this mean DEC = 90 when declination encoder are zeroed? And please verify my math assumptions in my previous post, is it OK? or is there something else done differently?

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I would like support of Digital Setting Circles. 1 week 1 day ago #15272

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> Do you want to clear everything except "Point Declination = 90"?

This means the initial value of the elevation angle on the star chart.

Initial values ​​of encoder of BBox are as follows.
In the case of step number 4096
ALT-2048 0 + 2048
AZ-2048 0 + 2048

When nothing is moved, both ALT and AZ are 0.

Whether to set 0 to 90 degrees as the initial value on the star chart
Or 0 degree.

This is the initial value of altitude.
The initial value of the azimuth angle is set to north or south when the encoder is 0.
When setting to 90 degrees with star chart software
Connect the telescope to the star map software. The telescope is at an altitude of 90 degrees and faces azimuth 0.

Alt Az When connected to Mount BBox,
It becomes as follows.

When the altitude angle is set to 90 degrees.
Azimuth angle 0
Altitude 90 degrees
The points are displayed on the star map.
(The numerical value of the encoder is 0)

Move the telescope from this position onto the star map → Synchronize to reduce the deviation.
(Usually we will synchronize with 2 stars.)

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I would like support of Digital Setting Circles. 1 week 1 day ago #15273

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I attached the code I used to create a BBox compatible interface with Arduino.

When creating this driver, I think that it becomes a reference.
Attachments:

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I would like support of Digital Setting Circles. 1 week 1 day ago #15274

Ok so there are two offsets. Encoder offsets as is now, plus degree offset. I'm not going to mention RA/DE/AZ/ALT, just Axis1, and Axis2, and depending on mount type. Just one last question to verify, shouldn't we add LST (Local SIdereal TIme) to RA? If RA = 0, and assuming use pointing it NORTH, the RA = LST, correct?

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I would like support of Digital Setting Circles. 1 week 1 day ago #15287

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RA? If RA = 0, and assuming use pointing it NORTH, the RA = LST, correct?

The 0 part is the reference point.
I actually took a log.

When moving only the altitude angle (above)
-02048.-02048
-02048. + 01841
-02048. + 01701
-02048. + 01242

When moving only the azimuth angle (to the south)
-02048.-02048
-01969.-02048
-01893.-02048
-01798.-02048

Since it is a device to send it to a PC, it will be adjusted with star map software for display on the chart.

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I would like support of Digital Setting Circles. 1 week 1 day ago #15288

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私はWifiシリアルでエンコーダーを読み取るBoxも作っているので、NexusのようにWifiシリアルを使用する機器の検証も可能です。

Wifiシリアルの通信にはIPアドレスが使用されています。
(対応する場合はIPアドレスの入力画面が必要)

先程送付したコードはUSBシリアル、Wifiシリアル共通です。

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I would like support of Digital Setting Circles. 1 week 1 day ago #15302

T-Studio, please only post in English. I was able to translate what you said thanks to Google. At any rate, I made a lot of changes to the DSC driver today. SYNC is still not yet implemented. Please try the driver and see if you can adjust the settings until the crosshair in KStars matches what you digital setting circles report.

So there are a couple of settings:
1. Offset + Scale for RAW encoder values.
2. Axis Resolution
3. Axis Degrees Offset
4. Axis Reverse
5. Mount Type

So the raw encoder values are first transformed using the raw scale + offset settings. Then reverse is applied if selected. Then degree value is calculated and the Axis degrees offset is added to it. I added simulation mode to test these stuff and it looks OK so far. I will implement SYNC next but let's make sure that the current stuff are indeed correct.

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I would like support of Digital Setting Circles. 1 week 1 day ago #15310

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I'm sorry
I mistakenly sent it in Japanese.

I am grateful for your response.

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I would like support of Digital Setting Circles. 1 week 20 hours ago #15330

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Hello
I upgraded to the latest state and checked the DSC driver.

Explain the results and measures.
(Please also check the description of attached data)

1. Since it is set to the hour angle, it does not match the movement of the star map.
(Setting of azimuth angle and altitude angle is required, the unit is angle).

Encoder resolution can not be set. There is no place to enter.

3. A check box is required to change the polarity of the encoder.


The procedure up to the above observation is as follows.

1. Point the telescope to the south or south of the south.

2. Connect the INDI driver.

Enter the direction of the telescope set in 3.1.
(North: azimuth angle 0 degree, altitude angle 0 degree,
South: in the case of an azimuth angle of 180 degrees, altitude of 0 degree)

4. Point the telescope to the reference star, introduce it to the center, right click on the star chart software to display the menu and synchronize.
(Make sure that the azimuth and elevation angle of the star's current time are set from the star chart software)

Example: When starting at local time 170 degrees azimuth, elevation angle 45 degrees, encoder step 4096 (both axes) polarity +, south direction, altitude angle 0 degrees.

The encoder count of the azimuth angle of 170 degrees is as follows.
2048 - ((180-170) * 4096/360) = about 1934

The altitude angle is 45 degrees or less
2048 - (45 * 4096/360) = about 1536

When synchronizing on the star chart software, if there is a deviation from the above values, it is input as an offset value.

PS.LNMOJB - Z.TXT is a log file. The file name changed as you brought the data to Mac.

that's all.
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