SparkFun Forums

[newbiketech]

Does anyone have any experience hooking multiple sensors up to the Logomatic? Will each sensor create a seperate file or will the same log file just store multiple parameters. I plan on hooking up a cycle analyst (for ebikes), an accelerometer, and would love to have GPS as well.

[newbiketech]

Anyone?

[esklar81]

newbiketech,

Have you RTFM?
http://www.sparkfun.com/datasheets/Widg ... ic-v21.pdf
I believe it answers your question.

Eric

[Woehrle]

newbiketech,

Yes you can hook up multiple sensors up. I'm assuming they are out putting analog voltages? If so, switch the logomaticV2 to mode 2 and turn on the ports you want. As for the data the logomaticV2 will create separate columns for each device, or each port open.
I hope this helped you.

Woehrle

[PhatBob]

I'd like to read sensors with a voltage of 5v, but the VREF (pin63) on the LPC is connected to VCC (regulated at 3.3v).
Meaning I'll either have to use a Potential divider to pull the voltages within limits, or see if its possible to modify the board (might be possible as the pin has a through hole connection which could be drilled out and used as a pad for a flying wire).
Also theres no on-board protection of the ADC lines, depending on where the signals are coming from, some protective circuitry will be required.
So in summary to make the board a "standalone" it will need:

• 5V regulator for VRef and ULIPO.
• Max232 for RS232 connection.
• upto 8 channels of ADC protection.

It should be relatively straightforward to do this with a daughter board.