tutorials:products:pixel20mm:index.html
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| When connecting these pixels to a microcontroller, make sure you're connecting to the strand's **input** pins! Best way to distinguish the correct end is to examine the dots to find an arrow symbol. In the image above, the arrow is in the top right corner. The inputs are on the left and the signal passes to the right, following the direction of the arrow. If connecting multiple strands together, make sure the output of one strand goes to the input of the next. | When connecting these pixels to a microcontroller, make sure you're connecting to the strand's **input** pins! Best way to distinguish the correct end is to examine the dots to find an arrow symbol. In the image above, the arrow is in the top right corner. The inputs are on the left and the signal passes to the right, following the direction of the arrow. If connecting multiple strands together, make sure the output of one strand goes to the input of the next. | ||
| - | Wiring is pretty easy since there are only 4 wires. The only important thing is that unless you are sure you will be using only a few of the LEDs at a time, you should not try to power the strip from the 5V on the Arduino. The Arduino is only mean to drive about 500mA of current, and as we saw earlier, a strand can take 1000mA or more if on! For that reason, we suggest powering with an external regulated 5V supply. | + | Wiring is pretty easy since there are only 4 wires. The only important thing is that unless you are sure you will be using only a few of the LEDs at a time, you should not try to power the strip from the 5V on the Arduino. The Arduino is only meant to drive about 500mA of current, and as we saw earlier, a strand can take 1000mA or more if on! For that reason, we suggest powering with an external regulated 5V supply. |
| Use this diagram with the red wire going to +5V from the power supply, green (serial clock) to Arduino digital pin 3, yellow (serial data) to digital pin 2, and blue to both the ground connection on the power supply and any available GND pin on the Arduino. | Use this diagram with the red wire going to +5V from the power supply, green (serial clock) to Arduino digital pin 3, yellow (serial data) to digital pin 2, and blue to both the ground connection on the power supply and any available GND pin on the Arduino. | ||
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