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Bioloid BlueTooth Interface Hack

Source: robosavvy.com
Topic: Bluetooth Hacking


Short Desciption:
Bioloid BlueTooth Interface Hack. Warning. WARNING : This hack is not warranted ... need to start hacking the CM-5. Step 1 Hooking into the Zig-100 Port ...

 

Content Inside:
Bioloid BlueTooth Interface Hack Bioloid BlueTooth Interface Hack Warning WARNING : This hack is not warranted in anyway. You do this at your own risk. I am fairly sure that Robotis would see this as voiding any warranty they provide on their product and if you get this wrong you could easily damage your Bioloid CM-5 processor module. The Bioloid Zig-100 Interface The Bioloid CM-5 processor module contains an interface on the processor board for a ZigBee based wireless link. This interface is documented in the Zig-100(English).pdf file provided by Robotis and the document details the pin-out for the port on the CPU pcb. The pin-out is as follows : For the purposes of attaching a BlueTooth module we are only interested in GND, VCC, TX and RX. The rest are redundant for this exercise. Note : VCC is a regulated voltage of 2.7 to 3.3 volts (although I have not seen it at less than 3.2) and as such the bluetooth module you select must be able to run at around 3volts. These details allow us to connect a serial device to the port and power it. However, there are still a number of unanswered questions. Firstly, the serial communications speed. I determined from the Zig100 documentation that the port runs at 57600 baud, 8 data bits, 1 stop bit, No Parity and no flow control. With a Zig-100 module you can drop into a configuration mode and change this but in our BlueTooth example we cant. So we are stuck at 57600 baud, but this should be more than adequate for a control system. To test the principles I connected a TTL to RS232 level shifter between the CM-5 Zig-100 port and a PC. Using the Behavior Control Program I set the CM-5 to send out a value of 65 via the TX remocon data command. When viewed in hex on a PC terminal program this produced the following output: FF 55 41 BE 00 FF The hex 41 is the value decimal 65 and the other data appeared to be some sort of packet information. Unfortunately I dont think in hex or packets very well so was at a bit of a loss. Anyway an ...

 

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