I've been reading through the following thread >> Arco 1010 servo action problem Which helped me resolve some issues in setting up a servo for controlling pen up/down movements on my Acro. However when I click the 'pen up' button in Blackbox Control the servo makes a constant noise which sounds like it is doing a lot of work. It does not make that noise on pen down, and the range of movement is fairly small, and not approaching the limits for the servo. $30 is set to 255 and $31 to 0, laser is not enabled. Posting this here in case there are any other parameters I should check. I plan to test out a different servo tomorrow. Thanks
Your pen-up value may be set too far, ie if servo stalled mechanically before it reached the commanded set position, it will keep trying to get there
Okay, so it turns out that the noise is coming from the Blackbox Controller and not from the servo. The volume increases as the pen-up value increases. I currently have pen-up set at 30 and it is clearly audible. My wiring follows this diagram https://docs.openbuilds.com/lib/exe/fetch.php?cache=&media=docs:blackbox:rcservo-wiring.png Also, the BB controller makes the noise on pen-up even when the servo and/or servo power supply (5V) are disconnected.
A very high-pitched wine could indicate you are pushing the onboard 5v step-down converter too hard! (pulling too much current to power the servo) The Servo port is meant to deliver power to small servos, don't try using a 17kgcm for example (; Use one of those tiny 8g microservos, more than enough to lift a pen
I'm not using a servo port, just using the toolhead jack to send the pwm signal to the servo. Also, I am getting the same noise from the blackbox controller whether i use a sub-micro or a micro servo. It isn't clear to me why I am getting noise from the controller even when the servo and it's power supply are disconnected. Does the relay mode jumper need to be removed when using the Servo as it does when using a Laser? >> docs:blackbox:connect-3-wire-laser [OpenBuilds Documentation]
Thanks for the clarification Relay jumper should be removed yes: Refer to docs:blackbox:jumper-relay [OpenBuilds Documentation] and docs:blackbox:connect-rc-servo [OpenBuilds Documentation]
