作り方

How to make your own "GlueMotor"

Here is a schematics of "GlueMotor Cable":
Schematics of GlueMotor Cable
Note: C1 and C2 are not necessary for iOS devices (iPhone, iPad, iPod touch), but to avoid the risk of damaging your iOS device (most likely not, but), you should put them.

FAQ

Q: What servo motor do you use at Maker Faire Bay Area 2012?
A: Futaba S3003. I bought from TowerHobbies.com Futaba S3003 Standard Servo Motor ($10.99).  Also I use Parallax (Futaba) Standard Servo ($12.99).

Q: I built my own GlueMotor Cable, it works but only control +-45 degrees (total 90degrees). Why?
A: Current version 1.1.0 of GlueMotor app only generate 50Hz 1.5ms+-0.5ms PWM pulse because this is a standard specification (I guess, I could not find any official specs but several web site mention that) of the servo control signal, and I do not want GlueMotor to damage your servos with out-of-specs PWM (some miniature servos are very easily damaged in angle limiter, and causing potentiometer gets damaged). I am going to add a feature to adjust the pulse range (minimum & maximum width) so you can adjust it per servo.

Q: Did you say GlueMotor Cable works with any analog servo motors?
A: Ah, did I say that? Actually, It works with any analog servo motors that I have so far. I will put a list of servo motors that I have tried with GlueMotor cable soon.

Q: Hey! You are lier! I made a GlueMotor Cable exactly same as your schematics, but does not work with my Android Phone!
A: It is possible. Unfortunately some Android device cannot generate enough signal level to control the servos. In that case, you need to bias the input after C1 & C2. I will put modified schematics soon.

Q: I am using Android phone. How come there is a delay between swiping gesture and rotation of the servo? Are you intensionally make Android version slower than iOS version??
A: No no! I was trying to reduce the delay on Android, but so far no luck. If you know how, please let me know!

Q: Why do you hide your source code in your hard drive? I don't believe any "Not Open Source" apps.
A: I will publish the source code once I clean up the code :-)

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