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About jbrazio

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  1. Arduheater - Intelligent heat controller

    Hi @acarrier, the problem is that the ASCOM standard (AFAIK) does not foreseen a standalone heating controller as a device type. I'm currently developing a cross-platform standalone application which will allow you to control all the parameters of the device.
  2. Has anyone 3d printed a bahnitov mask

    Actually NTC are accurate enough for the task here, what maybe happening is that the value lookup table used by Marlin to correlate the temperature with the ADC reading is not the optimal one for the type of Thermistor in use, this will make temperatures to be off (in some cases by 20, 30C) from the actual running temperature. If you have a DMM with a temperature probe is easy to validate if Marlin is setup correctly (within the error margin of the DMM, probe error, etc).
  3. Has anyone 3d printed a bahnitov mask

    It depends on brand of material but usually PLA is 190C with bed between 45-60C (depends on the size of the piece and external drafts, more temp the more mm^2 the object occupies). If you have a lot of stringing lower the nozzle temp before trying to increase retraction over 1mm.
  4. Has anyone 3d printed a bahnitov mask

    I’ve built and printed a couple of Bahtinov masks. If this is your first print it will not be easy due to the narrow slits on a 80mm scope. Please stop using ABS, nowadays there are other materials with the same properties and they will not kill you, think PETG. Using PLA for astronomy is OK just remember it doesn’t like sun exposure nor high ambient temperatures.
  5. Happy new year ! Some fresh news to start the year. - Uploaded to Thingverse the .stl files to 3D print the controller enclosure. - After an overall code refactoring job the v0.1b has been released on Github. - Documentation improved a lot, it should not be clear what you need to do and how to do it by reading the README file and the config.h file. Important: Please have special attention if you're upgrading from a previous version of Ardufocus as the AREF has changed from External (3.3V) to Internal (1.1V), the physical wiring changed accordingly. You may need to modify your board layout before uploading the new version. PS: For the eagle-eyed ones.. yes, that on the left is a second focus motor output port, stay tuned. ;-)
  6. ZWO ASI 1600 MM washer/spacer

    Can you share an example picture ? If you have focus at mid frame at a first glance I would say it shouldn't be related with spacing.
  7. So you would like to have a "stepping profile" that would automatically switch between the micro-stepping modes ? This is interesting but is it an overkill ? Specially with your 100:1 setup. The setup I'm using has a 64:1 reduction on the gearbox and then the gears further reduce that 3:1, I don't feel the need to drive to focus motor other than full step mode, I get very fine precision focusing with SGP using 100 step per frame with a minimum of 9 frames it 99% of the time enough for the system to get the optimal intersection point.
  8. Hi Nick ! Which stepper driver are you using in your implementation ? Is it the DRV2285 ? I had yesterday night a request to support the DRV8834. The Moonlite protocol is not a gem, specially if you look at the second motor control.. it looks what it was.. a hack to something already existing, nevertheless is a well known and supported protocol. My intention was not to extend the existing protocol but to be a stand-in replacement for their control box and allow at the same time a low cost DIY entry to auto-focus. I thought about end-stops, which I believe have a special importance for remote observatory operation using Crayford focusers; Crayford focusers rely on friction between two polished surfaces, one being the control rod and the other one the flat zone on the tube itself, as there are no "sync notches" slippage will occur no matter what, the integral of the slippage during time will start to drift the focus point between sessions, that's why a end-stop or better a home-end-stop was something that already had crossed my mind and in fact the Moonlite protocol supports it with the "PH" command. If you intention is really to have end-stops (in and out) then I also believe no protocol extension is required, just behave like a "FQ" command stopping the motor and the position counter. But I'd like to have more information on the protocol extension you have built to make them work and all things INDI. :-) I will happily welcome you on board. > I couldn't see at the moment in the code is the stepping sync points when micro stepping You're right, I do support micro stepping but I do not change the way the step counter behaves (i.e. 4x 1/4 micro-stepping = 1 step on the counter), I always consider each micro-step a step (i.e. 4x 1/4 micro-stepping = 4 steps on the counter), this was basically because the step counter is a integer thus nor the software nor the firmware are expecting to receive floats. If your suggestion is when changing from 1/1 to 1/4 micro stepping the counter should be updated i.e. multiply by 4 then that's a really insightful suggestion which I will implement ! :-)
  9. Quick update on the project: To upload the code into your nano/pro/uno it is no longer required to have Platformio installed, just fire up the Arduino IDE and open the .ino file on the project's root.
  10. Arduheater - Intelligent heat controller

    I've been busy refactoring the current code base, this should come out in the next week or so. In the meanwhile I've 3D printed and field tested the second version of the box, electronics and heating strips.
  11. Arduheater - Intelligent heat controller

    Finally it's here ! I've updated the project page with the BOM, schematic and prototype board layout. Visit the project's github page for the latest version of the files.
  12. Thanks both for the advice ! Indeed I did the test as Tim suggested and it really gives the image a huge "punch". If I'd like to do the thing in PixInsight is it possible ? The micro lens issue seems to be present on the ED80 with the focal reducer as far as I can tell. Some people suggest to change the focal train a bit and see if it improves, I hadn't yet had an opportunity to try something like that. btw in post processing can we do anything about the artifact ?
  13. My first color integration of narrowband photography. 64x Ha, 64x O3, 64x S2. Calibrated with Bias and Darks. Total integration time: 9.6h Guided EQ6 ED80 with 0.85x FF ASI1600MMC (30 Offset, 200 Gain, -20C) Any improvement advice you could share with me would be helpful. View full size, view my gallery on Flickr Image Plate Solver script version 4.2.7 =============================================================================== Referentiation Matrix (Gnomonic projection = Matrix * Coords[x,y]): -3.47994e-07 +0.000417394 -0.188215 -0.000417267 -6.12786e-07 +0.835629 +0 +0 +1 Projection origin.. [2001.958931 452.598208]px -> [RA:20 58 47.000 Dec:+44 19 48.00] Resolution ........ 1.502 arcsec/px Rotation .......... -89.943 deg Focal ............. 521.71 mm Pixel size ........ 3.80 um Field of view ..... 1d 56' 35.1" x 1d 28' 8.4" Image center ...... RA: 21 01 49.614 Dec: +44 11 26.26 Image bounds: top-left ....... RA: 20 57 42.940 Dec: +45 09 54.93 top-right ...... RA: 20 57 44.489 Dec: +43 13 21.63 bottom-left .... RA: 21 06 02.843 Dec: +45 08 56.48 bottom-right ... RA: 21 05 48.150 Dec: +43 12 26.65 ===============================================================================
  14. Cold Finger - Test Results

    I'm far from being an expert on the topic but I don't believe we're seeing only pure random noise yet, there seems to be some horizontal banding on both pictures.
  15. Simple Vixen dovetail and ring pair to attach in a piggyback style a 80mm refractor telescope to your main scope using a ghetto style solution. Download the models from Thing 2378540.