Since the name "TurboScan” does not describe the functions of this device I have changed the name to something more meaningful. Thanks to my wife the new name is now WattsLeft™ Monitor.
Here is the presentation I gave at the last BayLeafs meeting in July.
A couple of weeks ago I ordered and received one batch of three prototype PCBs and built up one board for testing and to work out how to package it with the display.
Packaging of the hardware is now complete. It all fits in a nice small case (smaller than Gary’s SOC meter case). The custom PCB is the same size as the display board and connects to it through a single 1x16 pin header. External connections to the OBCII connector and remote rotary controller are made through a 1x8 connector on the back.
The reset button on the back of the case is used to access the startup configuration screen and display software version. This is not finalized yet but currently is used to select when the serial port is enabled to send data. Reset does not clear any saved history data. Only unplugging the OBDII clears the saved data.
One major addition is support for a small external Bluetooth module connected to the serial port and located between the PCB and the back of the case. A MOSFET has been added to the next version of the PCB to cut power to the Bluetooth module during sleep mode. This BT module allows wireless monitoring of EV or CAN frames with a notebook or Android device (app needed). The current serial format for testing is Gary’s CANDO format.
The updated PCB has been finalized and a production batch of boards has been ordered with an Aug 8th delivery date.
How much interest is there in the Bluetooth feature? I estimate it to add $20-25 to the final cost.