Forum >Replies by diversion54
Replies （5）
- Topic: Bluno Basic Demo line lengthYou Reply: When I load the Bluno Basic Demo project in Android Studio I get an error message saying the "BlunoBasicDemo.iml" file is missing. In the modules.iml file there is line :
<module fileurl="file://$PROJECT_DIR$/BlunoBasicDemo.iml"
But the target file is not included in the project on GitHub. Please advice where to find a complete project.
EDIT: Sorry, just forget this. After upgrading Android Studio I could load the project without issues.
So just one question from me :
BTW, can you tell what kind of +5 volt regulator is included on board the Bluno Nano ? Is it a pwm regulated supply or a direct current type ?
Regards
Reidar - Topic: Bluno Basic Demo line lengthYou Reply: Never mind, I found it on github.
Reidar - Topic: No contact with BlunoYou Reply: Hi r0ede1991,
I had a similar experience with my Bluno Nano, and I managed to cure the problem by attaching an usb connection to the Bluno from a Windows XP computer which did not have the drivers installed. When I connected the usb, Windows XP installed the drivers and then I could access the Bluno from both computers.
Maybe worth trying.
Cheers
Reidar - Topic: Bluno Basic Demo line lengthYou Reply: Hi Wendy,
Me too was thinking of getting my hands on the source code, so I appreciate your suggestion.
But the link you provided is not correct - its links to this page...
Reidar - Topic: Bluno Basic Demo line lengthYou Reply: Wendy.Hu wrote:
> Hi
>
> Thanks for your feedback to us and I will forward this to our software team
> to see if there will be an update in the feature. May I know what are you
> doing with the app for you project?
Hi Wendy !
That is great, I look forward to an updated Bluno Basic Demo.
Sure, I will try to describe my project.
I am an amateur astronomer, and I have noted that a stepper motor in my motorized telescope mount is not running 100 % at a constant speed. I can see a *very* small sinus-like, periodic (0.6 sec) variation in the rotation speed. This is no hardware fault, it is due to the cost-minded design of the stepper electronics. This variation is making it harder for my guidescope camera to keep the mount on track with the stars.
So I have built myself a trigger circuit, connected to the stepper motor input (with an optocoupler), which feeds my Bluno Nano. My sketch is providing 10 ms output pulses, carefully aligned with the speed variations (relative to the trigger pulse "index"). These output pulses will go into the autoguider input port of the mount, which is designed for taking speed correction pulses.
Also, I will monitor the autoguider signals (four pins) with the Bluno and send statistics data to my Android pad with the Bluno Basic Demo app. And I can turn on / off different functions with the same app just by sending specific commands like "reset statistics", "set pulsewidth 12", "read delay1", "turn on" (off) etc.
The Bluno Basic Demo really has great potential for remote control of the Bluno without doing any Android programming.
Reidar