multiplexer - 4 digit 7 segment CC - all digits count the same ... enter image description here7 Segment Wiring Diagram - The data transfer protocol uses a single NZR communication mode. When powering the pixel the D-IN port receive data from the microcontroller, the first pixel collect initial a 24bit of data then sent to the internal data latch, the other data which is reshaping by the internal signal, reshaping amplification circuit sent to the next cascade pixel through the DO port.After transmission for each. It works, need some wiring on the receiver part, but not too hard to do, very easy pairing, and the switch/receiver respond very fast. However, the receiver emit a very high pitch humming sound, generally people over age of 60, will not hear it. but most younger person will definitely hear it.. Circuit Diagram. The signal conditioning circuit consists of two identical active low pass filters with a cut-off frequency of about 2.5 Hz. This means the maximum measurable heart rate is about 150 bpm..
Using Multiplexed 7 Segment Displays – PIC Microcontroller Tutorial Seven Segment Multiplexing with PIC