Ir Lighting; Description; Specifications - Libelium Waspmote Technical Manual

Night Vision

4.1. IR lighting

4.1.1. Description

The Video Camera Sensor Board have 22 IR LEDs divided in two blocks controlled each one by transistors, to give extra
ilumination and record with few light or in the night. Block 1 can be controlled by pin ( ) and the block 2
DIGITAL6 POWER_LED
by pin ( ) or using the function . Please, refer to API chapter for more information.
DIGITAL8 POWER_LED2 powerIRLED()
Figure : IR LEDs activated
Figure : IR LED blocks

4.1.2. Specifications

Block 1
Number of LEDs: 8
Total current consumption: 200mA at 3,7V; 270mA at 4,2V
Current for each LED: 50mA at 3,7V; 67,5mA at 4,2V
Block 2
Number of LEDs: 14
Total current consumption: 390mA at 3,7V;490mA at 4,2V
Current for each LED: 48,75mA at 3,7V; 61,25mA at 4,2V
LED description
Model: HIR7393C
Peak wavelength: λp=850nm
View Angle: 50º
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