tlc5940 and hs422

Other Hardware General Electronics
1

Hi,
I'm trying to move hs422 from 0 angle to 180 using TLC5940 with Arduino, but it does not move to far ends, when I use the library:

tlc_setServo(14, 0);
Tlc.update();
delay(1000);

tlc_setServo(14, 180);
Tlc.update();
delay(1000);

I searched forum but found people talking of same problem, but no answer I could use.

Please let me know what to do, I'm using standard servo example of Arduino IDE with tlc5940. Will appreciate it greatly!

2

Are you sure your servo is capable of 180 degree turns?
Not every servo goes that far.

3

Benji:
Are you sure your servo is capable of 180 degree turns?
Not every servo goes that far.

Yes, absolutely sure. I have another servo controller (SSC-32 of Lynxmotion) and also I used general servo lib of Arduino, all ok with servos. When I searched the forum I found other post where the writer mentioned of this problem with hs422, but no solution there (it was not the central topic). I think the problem is with the way the init. func. is defined in the TLC lib, but I'm not sure. Hope someone knows it :slight_smile:

4

Have you tried playing with the constants in tlc_servos.h? Looks like there's quite a bit of latitude for adjusting to particular servo models.

-- Gordon