Hi, 1st time posting on this forum.
I have been buying parts from Sparkfun ever since i 1st saw the giant green Led Clock, Really loved the tutorial.
I am not good at code, but i can figure some things out. With the help of a friend, I been building various GPS and Wifi Clocks over the years. ( Thanks Mike ) without him none of my clocks would be possible.
Anyway, I have a problem of driving a 1.2" BLUE led display. Actually bought 4 of them.
and as usual china lied to me, I specifically asked if the leds could be driven with around 3v, I was assured YES…
well, they lied… sure each led will light, But they failed to tell me that was Per led die… not per segment…
it takes nearly 6v to light a segment.
I thought i was going to be smart and order the leds and then use the Adafruit 1.2" Led Back pack boards, as the foot print fit the boards perfectly… well, come test time i was really let down. the dots and colons lit up ok,nice and bright, but none of the segments lit up… ( i really wanted to build a blue display clock for a good friend… but i’m stuck…
So, I am asking here if anyone might know of another way to drive these boards
attached is info on the display…
https://www.houkem.com.cn/blue-color-1- … 6pins.html
I have used some different led drivers before, ( sparkfun TPIC6B596 ) for single digits, and have used the HT16K33
and the MAX7219… I don’t know which chip other than these I could use…I’d like something with serial or I2c .
If anyone can help advise, I’d appreciate it…