Welcome to Synthiam!

The easiest way to program the most powerful robots. Use technologies by leading industry experts. ARC is a free-to-use robot programming software that makes servo automation, computer vision, autonomous navigation, and artificial intelligence easy.

Get Started
Resolved Resolved by ptp!

New Servo Less Degree

i bouth a low profile servo.i want to use this for the turning waist.
i can adjust the servo in servo profile,but no calibration on the webpage.
the servo has a degree from 39 to 175 ,so my question is ,is this fixable to get the full 180 degree?

low profile servo

Related Hardware EZ-B v4
Related Control Horizontal Servo


Upgrade to ARC Pro

Become a Synthiam ARC Pro subscriber to unleash the power of easy and powerful robot programming

Your link to the servo info shows nothing. 

Do you have data sheets for the servos? Do the data sheets guarantee 0 to 180 degree motion? If not I'd say no.
#3   — Edited
Looking to the specs:


Working frequency: 1520us/333Hz, 900us-2100us
far left position = 900 us / far right position = 2100 us / middle position = 1520 us

EZB4 controller uses the following servo frequencies:
far left position (1) =  560 us / far right position (180) = 2140 us 

Using EZB4 controller + DS1509MG:
position < 40 = ignored
position 40 on EZB = 902.33 us is the 0 position on your servo
position 176 on EZB = 2096.11 us is the 176 position on your servo.
position > 176 = ignored

this is hardcoded in the EZBv4 firmware there is no way to change.

that is correct what you wrote.i set it low 40 and high 140.
i need a low profile servo.
thank you ptp

1) use the current servo and you need to do some calculations:
position 40 =  far left position on your servo
position 108 = middle position on your servo
position 176 = far right position on your servo

2) stick with EZ-Robot servos are the only one 100% compatible with EZBv4 servo frequencies.
#6   — Edited
I have several servos that have the same frequency as the above servo and DO NOT move the full degrees as well. I've tried it with EZB 4/2 but what about some of the other boards that are now supported? If the issue is hard coded to the firmware on the EZB do we have the same limitation on say the ardurino as an example?
i dont have room for a big servo.am making a turning waist for jd.
the waist would be too big.this is test nr 3.one more to go.
the servo will be covered.
User-inserted image