Hi Zhangkun,
Unfortunately the 7 segment display still does not work with the new library.
I wired the 7 segment display direct to a seeeduino (with current limiting resistors) and it works fine.
I uploaded the “CharacterFlow” example and measured the voltages at the TM1636 IC
CLK to GND: 4.95 to 4.99V
DIO to GND: 4.95 to 4.99V
5V to GND: 5V
A1, A2, A3 and A4 to GND: 1.55V
A, B, C, D, E , F, G and DP to GND: 0V
I uploaded the “MeasureTemperature” example, and the result is the same as above.
I uploaded the “RealTimeClock” example, and the result is the same as above.
Since the 7 segment display has common cathode at pin 12 (A1), pin 9 (A2), pin 8 (A3) and pin 6 (A4), I would expect the opposite voltage measurements at the TM1636 IC.
For example, if we want to show 8 in the far right segment, we need pin 10 (A4) of the TM1636IC to go to 0Vdc, and voltage output from pin 2 (segment a) to pin 8 (segment g)
Are we meant to have common anode 7 segment display instead?
Regards,
Vincent