Some doubts

Arduino(TM) Shields KA05/VMA05
1

Hi,

VMA05 looks great. Some questions:

  1. Digital inputs accept until what voltage? 24Vdc?

  2. Have you made any test with a wifi / gsm shield?

Thanks,

A.

2

  1. To activate the digital inputs, you need to pull them to ground. They are protected with diodes, so they should work fine with 0-24VDC signals.

  2. Sorry, we do not have any experience with those shields at this time.

3

Ok,
When you say you need to pull them to ground, do you mean just declare the pin as an input in the arduino ide? I am asking for some distribitor in Argentina and Spain to get one.
Anyway, this shield is able to work with more shields right (altough a digital input of 24Vdc comes from the shield, won’t damage other shields).
Thanks,

4

In the Arduino IDA, the pin needs to be declared as input, however when I say pull to ground I mean that to activate the digital you need to physically pull the digital input to ground e.g. by putting a wire between input and GND.
Since there are diodes, the voltage applied to the digital inputs will never reach other parts of the circuit.