I’m very new to using hardware and have spent a lot of time on sparkfun lately but was wondering if someone could tell me which Arduino boards are compatible with the MUX Shield II or how to figure that out? it’s this one:
I want to connect 6 lilypad accelerometers to the MUX and an arduino board, but none of the boards have enough analog inputs for 6 accelerometers. I also need the board to be able to communicate in real time with my computer, so I was thinking about the Leonardo or Uno since they have built in USB capability. any tips you have would be super helpful!
sammyt:
I’m very new to using hardware and have spent a lot of time on sparkfun lately but was wondering if someone could tell me which Arduino boards are compatible with the MUX Shield II or how to figure that out? it’s this one:
Any rev of an Uno should work. You'll need headers to stack the shield.
sammyt:
I want to connect 6 lilypad accelerometers to the MUX and an arduino board, but none of the boards have enough analog inputs for 6 accelerometers. I also need the board to be able to communicate in real time with my computer, so I was thinking about the Leonardo or Uno since they have built in USB capability. any tips you have would be super helpful!
Why 6 LP accelerometers ? I'm unsure how accurate the LP accelerometer is. The ADXL335 is a nominal 3v device. It's offset and sensitivity (G's/lsb) are ratiometric meaning they vary w/the supply voltage. The LP accelerometer uses a simple dropping resistor to reduce a 5v supply down to ??v. If the current draw varies then the supply voltage will and so will the offset and sensitivity. You might (depending on your needs) be better off using a 3.3v supply (from the Uno) and following the instruction in the comments.
Mathew Pottinger | about 4 years ago Usually the voltage used for the LilyPad system is 5V (because both the LilyPad LiPower and LilyPad Power Supply output 5V) - therefore, with the resistor still in place, this LilyPad accelerometer has been designed to accept 5V. If you want to use an input voltage of 3V, you can simply remove the resistor and solder a bridge between the pads. Note: If you are using the conductive wire to connect this to a power supply, be wary that the thread itself has resistance - so will need to take this into account when selecting an input voltage (due to the voltage drop across the conductive thread).
Better yet might be a ‘digital’ accel board that eliminates the MUX shield. “We’d” need to know more about your project to make any recommendations.