INK1003 wiring question
I’m ready to test the INK1003 strip I got per suggestions here in the community, however I have a question about the wiring.
I am assuming that this is really a three wire system but has 4 wires due to the fact that it uses 12v power.
I am also assuming that the wiring is as follows, top to bottom.
VCC - +12v supply
GND - ground for 12v supply
GND - Data ground - to Arduino GND
DO/DI - Data bus - to selected Arduino digital output pin.
Does this seem correct? Any thoughts or comments before I blow up my strip or Arduino? ;’)
Also, should I include a resistor on the data pin connection?
Thanks!
The two ground tabs look connected to me. Interchangeable.
@Mark_Kriegsman I believe you’re right. Which now concerns me more about how to wire this without toasting my Arduino.
What kind of Arduino? An Uno (and I think any of the “big board” Arduinos—anything with a barrel-jack connector) will run fine off 12V.
@Robert_Atkins I’m not concerned about powering the Arduino. I’m worried about the data bus pins sharing the 12v ground.
In your post, you described the correct layout of pin connections:
“I am also assuming that the wiring is as follows, top to bottom.
VCC - +12v supply
GND - ground for 12v supply
GND - Data ground - to Arduino GND
DO/DI - Data bus - to selected Arduino digital output pin.”
The other items you may want to include, are a 300-500 ohm resistor on the DATA line, a capacitor near your strip to prevent spikes upon power up, and a fuse to help protect against a major calamity/short circuit of your LEDs
@Jon_Burroughs Sounds good. Thanks!
A reverse biased diode between VCC and DI will prevent the DI input pin from being driven above VCC.
As I understand it, ground is ground is ground is ground (and if it’s not, you’ve got other problems!)
I.e., the ground of the PSU must be tied to the ground of the strips which must be tied to the ground of the Arduino. This answer is a good explanation.
