DI5 and DI6 digital inputs
An external potential free contact can be connected between terminals VSO and DIx (x=5,
6); otherwise, the DIx terminal can be connected to an external voltage signal (in the
9÷40V range) referred to the GND of the Iono MKR module.
DI5 and DI6 are connected to the Arduino board through a protection network. If you need
to bypass the protection network to use DI5 and DI6 as general-purpose TTL-level (0-5V)
input/output lines, or for 1-Wire or Wiegand support, you can move jumpers J4 (DI6) and
J5 (DI5) to the BYP position.
Note that, with the jumpers in the BYP position, you should limit the voltage applied to DI5
or DI6 b0V and +5V (TTL level). Exceeding this voltage range will result in
damage to the Arduino board and Iono MKR.
DI5-DI6 JUMPERS SCHEMATIC
NOTICE
11
Iono MKR User Guide
