MobiFlight Community Support

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A HUGE Thank You to everyone who participated in the forum, especially obviously to Pizman and Stephan who did an outstanding job over so many years providing an incredible service to the MobiFlight community.

The forum is still providing a lot of good content, hence we keep this information accessible.

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Message #25440

elral

From: near EDDL, Germany

Posts: 50

Hi Volker,

when we are talking about Mobiflight, we have to differ between the "Connector" and the firmware. The Connector sends always an absolute position to the firmware and the firmware keeps track of the number of steps. Therefore the "open loop control" can not be done within the connector by calculating the delta steps (which are relative) and a modified firmware is required. But I guess that's not something new for you.

The firmware supports external driver boards like Easydriver (https://github.com/MobiFlight/MobiFlight-Connector/wiki/Tutorial-Easy-Driver-and-x.27-or-x.40-Stepper-Motor),
but the manual override of the pin numbers do not work anymore with the newest release. Therefore the .mfmc has to be edited by hand (which is always a risk!) until a driver board can explicitly choosen in the connector.

For me the Easydriver board works quite good in combination with a "flat" NEMA 17 steppermotor. The advantage compared to these small 3D printer driver boards is, that this board runs also on 5V and drives the motor. The max. current/torque is still enough to drive my small trim wheel (size from the old Saitek trim wheel). The 28BYJ stepper is indeed very slowly and has a gear which prevents manual moving.

Regards

Ralf

2022-03-08 08:02

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