by

|   August 17, 2008 at 10:32 AM

This breakout board is a great small little beast. I have compiled some code to use the ADJD-S371-Q999 with the Arduino.

by

|   August 29, 2008 at 10:11 AM

I notice that the LED on my board is very dim. I've taken readings from the sensor with target media 3-5mm in front. But with the provided LED I have to jack the gain up to it's highest value to get any signal. It works fine with brighter light sources.

I'm trying to figure out if:
(1) My LED is busted
(2) My sensor is busted
(3) I'm screwing up calibration
(4) Everything is normal. I just need more light

Any help would be greatly appreciated. Thanks!
- Braden

by

|   April  7, 2009 at 4:41 PM

I think I've found a problem with the design of this board, and an explanation for your low brightness. With the LED being driven by the transistor, and with the voltage drop across the transistor, we'll probably only be seeing about 2.6v across the resistor and the LED. I have used the avago color sensor without this board & I've had the LED running at about 6mA & it's very bright indeed. With this board the LED will probably be drawing less than 1 mA ( I haven't measured it, but I will soon ) and so we'll be seeing about a tenth of that (judging by fig 13 in the sensor's datasheet).

So I think this board needs a redesign. I was driving the LED directly from a logic pin just using a current-limiting resistor and I had no problems (and a very bright LED!).

by

|   September 19, 2008 at 4:32 AM

I have tried using your code but it only keeps saying



read:64 or read:0

The lED is on but there is no reading

by

|   October  8, 2008 at 3:57 AM

Avago withdrew the product from its site ... problem?

by

|   February 23, 2009 at 2:13 PM

Simpat,
The problem is that Avago is planning on discontinuing this line of products at some time in the future. No official announcement of end-of-life yet, but it may come as early as mid-year.

by

|   May 22, 2009 at 2:08 AM

I have a simple "firmware" for the sensor which responds to 'R' to read and 'C' to calibrate (whitebalance) via serial. It is lacking the code to ensure bright lights do not overflow the sensor, but since that is not a concern for me, it is an exercise for the reader :P

http://git.pictorii.com/?p=sketches.git;a=blob;f=colour_sensor_firmware/colour_sensor_firmware.pde;h=407aef314730a8890ccb926ef760b0447a1a989d;hb=HEAD

by

|   September 15, 2009 at 4:09 PM

if there is another rev planned for this board, please break out the XRST pin.

by

|   October  7, 2009 at 10:34 AM

I bought one of those and it is working fine. I am wondering if I bought another one. how can I use both of them on the same I2C bus and they have the same Slave Address.

Any help would be appreciated.

Thanks.

by

|   October 23, 2009 at 9:56 AM

Hello everyone,

I think this board sensor can operate with 5V as well instead of 3.3V. I don't see any reason for damaging the hardware, because the 2.8V regulators can operate in a range 3.05V to 6V input if I am right... (see LP3987 data-sheet).

Please let me know of what you think!

Thanks
Akis

by

|   January 21, 2010 at 12:47 AM

Take a look at what the top of the line in color sensors can do:

http://www.youtube.com/watch?v=_aDDud0ihco