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APPLICATIONS INFORMATION
Powering Up the IDK
The IDK baseboard can be powered up in stand-alone
USB Mode.
Powered shields require additional power supply for its
operation. No-Input power shields (e.g. PMOD-type
shields) draw power from the baseboard itself.
PMOD type shields: ALS, PIR & Touch (does not require
additional power supply).
Arduino powered shields: Stepper Motor & LED Ballast
shields are supplied from external power source.
IDK Powering Modes
The IDK can be powered in 4 different ways:
1. USB: The IDK baseboard can be powered through
USB Mode. Jumper setting: None.
CAUTION: In USB Mode, powered shields like Stepper
motor, LED Ballast, etc. need to be connected
to an external 12 V supply using the cable
assembly provided with the IDK.
2. External 12 V DC power adapter supplied with the
IDK: Wall power adapter can be connected to the
DC jack J11. Jumper settings: J16:ON. J12: OFF
& J15: OFF.
3. External 12 V DC through J11 Connector: 12 V
can be provided from an external DC power
supply through J11 Pin no.2 (+Ve) & J11 Pin No. 3
(−Ve). Jumper settings: J12: ON. J15: OFF & J16:
OFF.
4. External 9−32 V DC through J11 Connector: 12 V
can be provided from an external DC power
supply through J11 Pin No.2 (+Ve) & J11 Pin
No. 3 (−Ve). Jumper settings: J12: OFF, J15: ON
& J16: OFF.
Jumper Settings
The default jumper settings are highlighted below for the
IDK boards.
EVBUM2497/D
Figure 1. Hardware Setup
Baseboard Rev2.0
J16,
J15,
J12
J22
J14
J35,
J36
J24
J10
J32: Pins 2−3 to be shunted for Expander IO1_6 th pin as
Wi-Fi Mod Chip select
J31: Pins 1−2 to be shunted for HR pulse from HRM shield to
DIO16
J31: Pins 2−3 to be shunted for DIO16 to Arduino connector.
J35, J36: Pins 1−2 to be shunted for expander IO pins to
J35, J36: Pins 2−3 to be shunted for expander IO Pins to LEDs
www.onsemi.com
2
1
2
3
Arduino connectors
Figure 2. Baseboard Rev 2.0
J29,
J30
J3
J4
J6
J5
J31
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