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How to Build a BB-8 Robot
For xml files you need to properly unpack apk first, won't work with just winrar.
I'm not sure, but I think it should be, I just don't know how. HEX file is easy, just open .apk file with WinRAR and replace the hex files inside, you need to sign apk after, i did that by using some certificat for development.
I edited sketches on my computer and then replaced original .hex files in Zowi android app (Zowi.apk) with modified ones. Programming via bluetooth is easy, i connected RX, TX and DTR to Pro mini and i can program it via Arduino IDE or upload already compiled sketches from Zowi for android.Bluetooth module has to be HC-05 because HC-06 doesn't have reset for programming arduino (i bought HC-06 by mistake and had to reflash the firmware of HC-05) and I think that Arduino Nano doesn't have DTR pin so a 0.1 uF capacitor should be added between reset pin and bluetooth module.
Just a little update: My Otto runs on arduino pro mini on custom board, it has bluetooth and is controlled by zowi app (which I edited so i have more sensitive mic and correct voltage measurement), added microphone, LED so i know when it's on, power switch, bypassed voltage regulator on Pro mini and it runs on 4xAA rechargable batteries.Here is the video of it dancing:https://youtu.be/nX2EZhJKNBE
Just a little update: My Otto runs on arduino pro mini on custom board, it has bluetooth and is controlled by zowi app (which I edited so i have more sensitive mic and correct voltage measurement), added microphone, LED so i know when it's on, power switch, bypassed voltage regulator on Pro mini and it runs on 4xAA rechargable batteries. It also has two buttons in the back so i can change modes and it can be programmed via bluetooth from computer or mobile.Here is the video of it dancing:https://youtu.be/nX2EZhJKNBE
Here is the video of my dancing:https://youtu.be/nX2EZhJKNBE
It is retired but you can still buy it everywhere, no need to use anything else. I used arduino pro mini, because i already had it and I made expansion shield for it by myself.
1) author said it should be ok, but still wasn't for me. It's best to take original 123D file and repair it just in case. I can do it for you if you don't know how. 2) buy arduino nano, lot of places sells it still, that's the easiest way.
Next step, adding bluetooth, microphone, some buttons for changing modes and some leds.
Otto - build you own robot in two hours!
Just a notice to anyone who will want to print this, stl file for the head is wrong. Latches (little legs that are on head) that connect head to the body are not combined with the head so when they print they are not connected to the head.Great project but I have to find someone to print me a head.
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