30 Amps per Channel, Four channel current-sink

[John Luciani]

Over the last year or so I have talked to a few dorkbots about high-current
LED drivers. I finally finished a prototype of a 30A per channel, four channel current-sink
designed for high-current LED and electronic load applications. Each channel
has an independent current setting and on/off control.

This board plugs into a ZB1, NB1 or NB1A.

My prototype is setup for 1W leds (350mA). Higher currents are possible by
changing the current sense resistors. Pics are at -- http://tinyurl.com/yzg9kd7

I have a sketch and library for controlling the current and on/off state for
each channel. I just need to add the PWM functions. Once I heatsink the
output FETs and change the current-sensing resistors I will test at 30A
per channel.

(* jcl *)

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