Appendices
50
© NXP Semiconductors 2017
JN-UG-3121 v1.1
A.2 Lighting/Sensor Expansion Boards
The Lighting/Sensor Expansion Board (part number: DR1175) is an Arduino-
compatible shield that is supplied pre-fitted to the Arduino-compatible header of one
of the Carrier Boards in the development kit (see
).
The Lighting/Sensor Expansion Board has the following features (also see
):
Arduino-compatible expansion header (in four parts, CN1-CN4)
3 white dimmable LEDs:
Controlled in unison by Pulse Width Modulation (PWM)
Driven by the PWM output of JN517x Timer 1 on the module on the Carrier
Board, via DIO3 on the module (for details of the JN517x timers and DIOs,
refer to the datasheet for the relevant chip).
Colour LED module containing 3 miniature LEDs:
LEDs are independently controlled by PWM from an on-chip multi-channel
PMW controller, connected via the 2-wire Serial Interface (see below)
Connected to the 2-wire Serial Interface (I
2
C) of the JN517x module on the
Carrier Board, via DIO14 (clock) and DIO15 (data) on the module
Humidity/temperature sensor (of the type SHT1x) connected to the JN517x
module on the Carrier Board, via DIO12 (data) and DIO17 (clock) on the
module
Light sensor (of the type TSL2550), connected to the 2-wire Serial Interface
(I
2
C) of the JN517x module on the Carrier Board, via DIO14 (clock) and DIO15
(data) on the module
Reset button (to reset the Carrier Board)
Note:
For full details of the board, refer to the
Carrier
Boards and Expansion Boards Reference Design
(JN-RD-6036)
, available from the NXP web site (see
).
Caution: The LEDs on the Lighting/Sensor Expansion
Board are very bright at maximum intensity. To avoid
damage to your eyes, do not look into them directly for
an extended period of time.
