* Wire Data, Clock, and Latch to your microcontroller.
* Supply power and ground to the chip.
* Add the Reference Resistor (use 1K Ohm to test).
* Connect LEDs.

Reminder on the A6276:

* It SINKS current, so you connect the Cathode (negative) side of the LEDs to the chip. The LEDs are wired with a common Anode (positive) right from the power supply.

* The chip uses a Reference Resistor, not a Drop Resistor. Use the I = 18.76 / Rext calculation. A 1K resistor gives about 20 mA of current, which is okay for most LEDs.

The hard part is the code — you have to very specifically trigger the Data, Clock and Latch. Timing is extremely important.

I’ll put together a simple test schematic and some sample code.

Could you please send me a schematic of use it with 16 red leds.

I would thank you so much you do it soon.

{email removed for privacy}

Thanks so much