OBD II USB adapter to Bluetooth adapter hack. Creampie Sophie Dee. Hi. Yes, I was pretty busy or lazy to write something. There was not interesting projects. The last one was a battery backup switcher, it switches power source to battery when mains go down. Based on relay and transistor. Today project is not a big deal too I have a cheapo OBD II USB adapter and serial bluetooth module. As bluetooth module was not used anywhere for a long time I decided to hack OBD II USB adapter and make it Bluetooth instead of USB. Yea I know I can buy a cheap Bluetooth OBD II adapter, but I like DIY. So I opened the box and found PIC1. F4 mcu inside and FTDI2. RL UART to USB serial converter. Then I desoldered FTDI chip with usb crystal. Popcap Games Bookworm Adventures 2 Full Version. PyOBD aka pyOBDII or pyOBD2 is an open source OBDII SAEJ1979 compliant scantool software written entirely in Python. It is designed to interface with lowcost. Low Cost OBD2 ALLInOne Scan Tools Serial Interface Kit Including Cables and Software 99. USB Interface Kit Including Cables and Software 109. My bluetooth serial module needs 3. I had to add 3. 3v regulator with couple of capacitors took 5v from 7. M0. 5 voltage regulator on pcb. OBD II box has 5 leds indicating rxtx from car and serial and power status, BT serial module can indicate its status with led too, so I drilled a little hole in the box top right under sticker and glued the led with hot glue. When I finally soldered this mess o wires to adapter pcb in place of FTDI chip I found that is does not work, not receiving or sending any data, but bluetooth pairing works and BT status led works as it should. Took a bit of time to solder FTDI chip and crystal back for debug. Find out that it works as USB ok but not bluetooth. Then I take a look where tx and rx connects to PIC mcu and you probably guess already, I connected BT module tx to PIC tx and thats wrong Changed wires and soldered them right to the PIC mcu legs, that works. Time run away and I leave FTDI chip on pcb. Thats it, works great with my Android phone even better than windows scanner apps under wine in Ubuntu. ELM327 is obd2 bluetooth scanner which can work well with iPhone and Android by Wifi. ELM327 iPhone can read out the vehicle data including Engine RPM, Calculated. Description ELMUSB is ELM323ELM327 compatible OBDII diagnostic interface. It supports all OBDII protocols including CANBUS for 2009 vehicles and is compatible. Fortunately, a very large number of developers have created software for use with our OBD integrated circuits. We list just a sampling of what is available here, to. ScanMasterELM is a OBD2EOBD diagnostic scan tool for vehicle diagnostics under OBDIIEOBD standards that were developed specifically for the ELM327 chip from the.