kg9dk
My subject is my question, I was wondering if there might be some documentation on the EZ-board in the form of a block diagram or a schematic. I am interested in the 3 Regulator and there appears to be a fuse between 2 of them. From the hardware manual I gathered that one of the regulators is one amp and that is probably for the micro and the bluetooth board. The other one was a 3 amp and it is probably for the external devices that are plugged into the D zero - D19. My guess that the VR3 is a 3.0v regulator, not sure what it is used for.
I am use to using schematics to find my way around a printed circuit board , so it is my perferred way of learning about the circuit. I understand that in some cases a schematic is not provided because it might allow other to copy one works. If that is the case I do not have a problem with it.
Why I am asking about documentation, is there a way of testing the signal coming out of the bluetooht dongle that I plug into my laptop. I have notice that making connection to the EZ-board depends on how close it is to the dongle. I think I read where the bluetooth on the EZ-board is a class 2 and is good for about 30 feet. Thanks for any input
john
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As for the bluetooth, the connections are marked with TX and RX respectively. There is also +5 and GND.
What is the signal voltage for the RS232, I see the power in is 5 volts but that does not mean that the signal voltage is the same, it could be 3.3 volts like other blue tooth devices I have ( alas I too would like full blown confusing schematics )
Dave
To answer Dave's question, the bluetooth carrier board has a 3.3V regulator and logic level translation circuitry to go from the 3.3V based logic on the bluetooth module to the 5V logic on the PIC chip.