Hi
The smallest (and cheapest) board 57x50mm is the new PCB for the myFocuserPro2M, DRV8825
It supports LEDS, BUZZER, OLED, Temperature Probe, 12V STEPPER POWER DETECT and HC05 Bluetooth. No push buttons or Home Position Switch
Using the PCB for myFocuserPro Moonlite compatible - If you load the myfocuserpro firmware v1xx (Focuserv175_DRV8825_HW203_OLED) then it wil be moonlite compatible. No BT or Stepper Pwr detect though, I will rewrite the v1 firmware so its added.
Hi Robert,
I hope all is well and you are staying healthy. I am designing 3D-printed housing to host an Arduino focuser. If there is enough interest I'd be willing to print a small batch for people who want to build their own focusers. One of the options I am thinking about is to have a kit and include all off-shelf components needed (Arduino Mini, 28byj48 stepper with Uln2003 board, screws). Can I get permission to pre-load your firmware on the board in order to help fellow astronomers who are not familiar with the Arduino environment? I know for me it was quite a steep learning curve. I'd be happy to send you the printed parts if you are interested. Please let me know.
Thank you,
Nick Ivanov
Hi
The smallest board 52x50mm is the new PCB for the myFocuserPro2M, DRV8825
It supports LEDS, BUZZER, OLED, Temperature Probe and HC05 Bluetooth
If you load the myfocuserpro firmware v1xx (Focuserv175_DRV8825_HW203_OLED) then it wil be moonlite compatible. No BT though, I will rewrite the v1 firmware so its added.
I was wondering if it is still the case that this is the smallest form factor board you have designed? I plan on controlling it 100% via software on my mini PC I have setup for my scope. I was thinking that I only needed the Temperature probe support. This is the first time I'm seeing something about 12v Stepper power detect, so not sure what it does. I'd like to have the smallest/minimalist setup possible.
Thank you for all you've done with this project,
Jon
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I have made a cut down model for my purposes, its a nano + a TMC2209, drives the stepper, supports a home switch and temp sensor and nothing else, 43.5 x 33.8 x 16.5mm,
4x 4.7K Resistors
2x 1N4004 Diodes
3x 10uF 35V Capacitors
1x R-78C5.0-1.0 Regulator (0.5 also works) https://uk.rs-online.com/web/p/dc-power-connectors/0448386 Power connector (low profile barrel connectors are rare)
1x 92250-088LF RJ45 Connector or equivalent (tab on bottom and no shield)
Pinout and other specs are on the bottom of the PCB, yes the regulator is overkill, but I like my gear to just work on any voltage (8 to 27V), It looks slightly different to the image as this is the revised one where things sit better flush in the sockets,
Hi
The smallest (and cheapest) board 57x50mm is the new PCB for the myFocuserPro2M, DRV8825
It supports LEDS, BUZZER, OLED, Temperature Probe, 12V STEPPER POWER DETECT and HC05 Bluetooth. No push buttons or Home Position Switch
Using the PCB for myFocuserPro Moonlite compatible - If you load the myfocuserpro firmware v1xx (Focuserv175_DRV8825_HW203_OLED) then it wil be moonlite compatible. No BT or Stepper Pwr detect though, I will rewrite the v1 firmware so its added.
https://aisler.net/brown_rb/my-project-repository/myfocuserpro2mdrv8825
Schematic attached
Cheers
Robert
Last edit: brownrb 2019-02-22
Hi Robert,
I hope all is well and you are staying healthy. I am designing 3D-printed housing to host an Arduino focuser. If there is enough interest I'd be willing to print a small batch for people who want to build their own focusers. One of the options I am thinking about is to have a kit and include all off-shelf components needed (Arduino Mini, 28byj48 stepper with Uln2003 board, screws). Can I get permission to pre-load your firmware on the board in order to help fellow astronomers who are not familiar with the Arduino environment? I know for me it was quite a steep learning curve. I'd be happy to send you the printed parts if you are interested. Please let me know.
Thank you,
Nick Ivanov
From: brownrb brownrb@users.sourceforge.net
Sent: February 20, 2019 12:22 PM
To: [arduinoascomfocuserpro2diy:discussion] general@discussion.arduinoascomfocuserpro2diy.p.re.sourceforge.net
Subject: [arduinoascomfocuserpro2diy:discussion] Smallest PCB Size
Hi
The smallest board 52x50mm is the new PCB for the myFocuserPro2M, DRV8825
It supports LEDS, BUZZER, OLED, Temperature Probe and HC05 Bluetooth
If you load the myfocuserpro firmware v1xx (Focuserv175_DRV8825_HW203_OLED) then it wil be moonlite compatible. No BT though, I will rewrite the v1 firmware so its added.
https://aisler.net/brown_rb/my-project-repository/myfocuserpro2mdrv8825
Schematic attached
Cheers
Robert
Smallest PCB Sizehttps://sourceforge.net/p/arduinoascomfocuserpro2diy/discussion/general/thread/150c4a1728/?limit=25#7334
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Aisler is no longer recommended for PCB and there should no longer be any boards hosted there,
That has been the case now for well over a year.
You do understand that this project clearly states over and over again that you cannot make kits for sale to other people.
Aisler is no longer recommended for PCB and there should no longer be any boards hosted there,
That has been the case now for well over a year.
You do understand that this project clearly states over and over again that you cannot make kits for sale to other people.
Hello Robert,
I was wondering if it is still the case that this is the smallest form factor board you have designed? I plan on controlling it 100% via software on my mini PC I have setup for my scope. I was thinking that I only needed the Temperature probe support. This is the first time I'm seeing something about 12v Stepper power detect, so not sure what it does. I'd like to have the smallest/minimalist setup possible.
Thank you for all you've done with this project,
Jon
I think I may have answered my own question, looks like this might be what I'm looking for.
https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/Documentation/Build%20a%20simple%20myFP2M-100.pdf/download
the myFP2M is meant to be a small minimal version of myFP2, using the same firmware as for myFP2
for myfp2M
see attached for myFP2M DRV8825
I think I may have answered my own question, looks like this might be what I'm looking for.
https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/Documentation/Build%20a%20simple%20myFP2M-100.pdf/download
Smallest PCB Size
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I have made a cut down model for my purposes, its a nano + a TMC2209, drives the stepper, supports a home switch and temp sensor and nothing else, 43.5 x 33.8 x 16.5mm,
Hey Ryan, I'm also looking for the same thing. Would you be willing to share the Gerber files for this?
4x 4.7K Resistors
2x 1N4004 Diodes
3x 10uF 35V Capacitors
1x R-78C5.0-1.0 Regulator (0.5 also works)
https://uk.rs-online.com/web/p/dc-power-connectors/0448386 Power connector (low profile barrel connectors are rare)
1x 92250-088LF RJ45 Connector or equivalent (tab on bottom and no shield)
Pinout and other specs are on the bottom of the PCB, yes the regulator is overkill, but I like my gear to just work on any voltage (8 to 27V), It looks slightly different to the image as this is the revised one where things sit better flush in the sockets,