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2. 11 2013 14:02
by brian
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DIY Pick and Place V2 – Base Vision LED Array

2. 11 2013 14:02 by brian

DIY Pick and Place V2 – Base Vision LED Array

pick and place vision led driver

The PCB's arrived today for the LED array to go in the base of the Pick and Place system. The six boards hold a total of 144 red leds.

We are now trying to use OpenCV with the Emgu CV C# wrapper to detect the chips.

The driver board is based on the LM3404MA constant current driver from Texas Instruments with a 24V input to drive the led array and also has a dimming input so the brightness can be controlled via a PWM input. The driver was designed using TIs Webench, you can download the schematic for the driver here.

pick and place vision led driver
pick and place vision led driver

When the leds are turned on, they produce a very smooth and even light on the components held in the picker head which will hopefully allow easier detection for the camera and software.

pick and place vision led driver
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