CD4052B: I want to control my multiple LEDs (twelve) with only single LED driver IC - Switches & multiplexers forum - Switches & multiplexers - TI E2E support forums
![How do I add status LEDs to my board driving optocouplers with ULN2803A? Should it be in series or parallel and how to calculate a new resistor value? : r/AskElectronics How do I add status LEDs to my board driving optocouplers with ULN2803A? Should it be in series or parallel and how to calculate a new resistor value? : r/AskElectronics](https://preview.redd.it/qa5go13ueg271.png?width=1784&format=png&auto=webp&s=6d193f63333ddae5c70f828be232bcdb8225ebe5)
How do I add status LEDs to my board driving optocouplers with ULN2803A? Should it be in series or parallel and how to calculate a new resistor value? : r/AskElectronics
![Common Cathode 7-segment LED array with 74HC595/UDN2981/ULN2803 - LEDs and Multiplexing - Arduino Forum Common Cathode 7-segment LED array with 74HC595/UDN2981/ULN2803 - LEDs and Multiplexing - Arduino Forum](https://aws1.discourse-cdn.com/arduino/original/4X/c/7/a/c7a0decd13df3529dbb013624e7e4250a94fb2a1.jpeg)