... DIYDrones member Pieter
Pieter was kind enough to send me this Bluetooth adapter. As it turns out it was trivial to add support for using this device to talk to APMs. Instructions are included below...
So, why would you want to do such a thing:
- You currently have no telemetry - in which case this is a definite step up (though I still think you'd be better off buying the 3dr radios)
- You have an android device that doesn't support USB host mode (list of tested devices here). Just attach this little bluetooth adapter to a battery and your radio. If your device supports USB host mode (especially if it has the rocking fast USB of Android 4.2 or later) I think you are better off just plugging your 3dr radio into your tablet directly.
- You have a XBee radio - I suspect that using XBee on Androids older than 4.2 would find that going through the bluetooth adapter to reach the tablet would be much faster.
Step 1: Send Deal Extreme $9 for this.
Step 2: Configure bluetooth adapter
These adapters come preconfigured for 9600 baud, you'll need to change them to 57600. To do this, temporarily connect the provided cable to a FTDI serial adapter, connect to the device at 9600 baud and then paste in the following string "AT+BAUD7"<return>. If the device responds with OK57600, you are good to go, otherwise try again.
Step 3: Connect bluetooth adapter to either a 3dr telemetry module (recommended) or directly to an APM board
To connect to the APM or a 3dr 900MHz radio, using the provided cable. Pieter has reported 100 meter range and I tested it yesterday morning and sure enough I could remotely monitor my plane/make config changes as long as it was close.
Step 4: Go to Android settings and pair your device with the bluetooth adapter. The PIN is 1234.
Step 5: Fire up Andropilot 1.2.00 or later. See our discussion group for download links etc...