Hi Forum,
Can someone guide me to some working example for such a 4 Bit Led Digital Module?
It's a HS410361k with 2 74HC595 IC on the back.
I tried several tutorials like Arduino 4-Digit 7 Segment Display 74HC595 module - Ardumotive Arduino Greek Playground, but I just can't get it running.
Very confused with the QH, ACLK and SCLK signals, tried in all combination with the standard SDI, CLK, LOAD without much success.
Thank you in advance!
My favorite Arduino youtube person...
I think QH is a reference to the decimal point being the "H"th LED segment (segments A through G being the LEDs that form the LED number) when connected to a 74HC595 (shift register), each leg connected to LED segments being "Q#".
SCLK = Serial Clock = SCK = SCL
ACLK = ?
RCLK = Latch pin of 74HC595
Get the version with TM1637 - it's much easier to deal with.
You showed us the markings on the cascade output side. Those connections are for daisy chaining multiple modules.
What are the input markings?
Chinese sellers often incorrectly call these displays "4 bit" but this is incorrect English translation. They are "4 digit" displays.
Calling them "4 bit" is confusing for beginners because in electronics/software, a "bit" is a binary digit, which can only be 0 or 1. These displays can display many more values including 2 to 9, and other symbols like "A", "F" and similar.
Thank you all for your answers.
I'll give up on this component and order a TM1637 LED Display Module instead.
It's a good plan. Another advantage, the TM1637 display doesn't need any processor intervention in between updates. The shift register based ones keep the MCU busy with refresh constantly. Some other hardware will not tolerate that.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.
