Hey,
Possibly noob question here but I have a few of the FS5103B-FB motors and I am only getting 120deg motion @ 900 to 2100μsec.
Do I need to send a byte or something to the maestro to unlock 180deg?
I can physically turn the motor by hand the full 180deg but when it’s the maestro’s turn, anything <900μsec or >2100μsec does not produce any movement and I only get 120deg of range in between.
Page 4 of the reference document shows both ranges
Are there two versions of the servo or am I missing a setting?
Hello.
To clarify, the FS5103B-FB servo is only rated for 120° (± 5°) for pulse widths between 900 and 2100 μs. To get the 180° (± 5°) range of travel, you need to extend the pulse width range to 600-2400 μs.
The default min and max settings on the Maestro for each channel are 992 μs and 2000 μs, respectively. If you command pulse widths outside of that range, it will get limited to the nearest extreme (i.e. if you send a set target command of 2400 μs it will get limited to 2000 μs). You can configure the min and max settings for each servo channel in the “Channel Settings” tab of the Maestro Control Center. That should be safe to do with your servo, but for future reference, please note that it is possible to damage servos when sending pulse width signals outside of the standard 1000-2000 μs range by running them beyond their physical limits. You can find instructions for safely expanding the range in the FAQs tab of the Maestro’s product page, under the “How do I use my Maestro servo controller to get the maximum possible range of motion from my servo?” entry.
Brandon
