Hi, I am looking for confirmation or referral to the right tracks. I would like to light individual COB LEDs (360mA;12.4W) sequentially using an arduino. On top of this I would like a signal to be sent to the computer after each diode is lit, but that's later. For the moment, I have prepared the diagram below. Would you change anything, or will this version be OK? I care about the simplicity of the circuit, as I am rather a beginner.
What exactly are you trying to do? You are using COB LEDs but your drawing reflects incandescent lamps? Next, have you read the data sheet for a 4017? I see 3 digital out lines on your Arduino going to 3 clock inputs (pin 14) of your 4017 chips. Did you want your 4017 chips to count to N and recycle or count to N and halt? Your drawing is a good example of why most members here despise Fritzing.
Using the 4017 decade counter divider each output 0 through 9 will sequentially go logic high on each leading transitional edge of the clock pulses. I get what you are doing with the transistors to drive the loads but beyond that I am not sure what should be going on with the 4017 decade counter divider chips?
Ron
Hi Ron,
I'm using tinkercad for this schematic and it only has incandescent lamps (for high power led simulation). I need to try Fritzing, maybe it will be better for my schematic. I just want my 4017 to count to N and turn off the light, so I remove the light from Q0. I see now that I didn't remove the transistors and cable. Sorry. I have code that turns on one diode at a time. This is part of the biggest project. When the light is switched on I want to take a picture, and so on and so forth.
Marcin
OK as long as you understand how your 4017 will behave. A count will only happen when pins 13 and 15 are low.
Ron
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