wiki:LEDArrayController

(Project on hold as of 1/5/18)

My name is Mikel Garcia-Marcos and I am an Associate Professor of
Biochemistry at the medical campus. I am writing to inquire about a
possible project. I would like to recreate something identical or very
similar to what is described in the attached manuscript (scroll down
to "Support Protocol 1: Construction of programmable LED light device"
on page 10 and the related Figure 2 on page 27).


Basically, I would like to build an array of LED lights that fits the
dimensions of a small plate used for culturing cells and that can be
controlled in terms of intensity and duration of "on" and "off"
cycles.

Parts cost / sourcing

Qty Item Price Ea Total Link
1 Arduino Uno $22.00 $22.00
1 SainSmart LCD / keypad shield $11.00 $11.00 link
1 BuckBlock Luxdrive LED driver $18.00 $18.00 link
12 470nm LED module $6.00 $72.00 link
1 Power supply 15V 1.5A $18.00 $18.00 link e.g.
3 TIP120 darlington $0.85 $2.50 link e.g.
1 Other misc parts $10.00 $10.00
1 Custom PC board $100.00 $100.00 ExpressPCB Miniboard (lot of 3)
Total (est) $250.00

Reference

The original Arduino software uses analogWrite() to set the intensity. This is implemented using PWM on the Arduino at 490 or 980 Hz depending on the pins. 6 pins are available so 6 LED groups can be controlled independently (with modifications to the software which currently supports only 3 channels)

A mystery is that in the original design one LED controller is apparently shared by 3 groups of 12 LEDs. Perhaps only one group is ever on at once? Need to discuss with the customer.

Last modified 11 months ago Last modified on Jan 10, 2018, 11:17:35 AM