Standardize servo hardware

[jamro]

Select and validate a globally available servo for the reference build, replacing the PowerHD HD-1370A if appropriate.

[jamro]

Pololu FEETECH Sub-Micro Servo FS0307 ordered. Waiting for delivery...

[qlikwer]

Good afternoon. It's a great project. Are you planning to support SG90 servos?

[jamro]

Thanks! For now, my priority is to keep the robot as compact as possible and make the build process simple.

Supporting a wider range of components is definitely on the roadmap (#11) but lower in the queue. SG90 is particularly interesting because it’s so widely available, although using it would make the robot roughly 20% larger.

I don’t plan to add official SG90 support in the immediate future, but there are two options in the meantime:

• Try the smaller servos used by the project.
• The Fusion model is included with the project, so it can be modified to fit SG90s if you’d like to experiment with them.

[jamro]

@qlikwer I will change the approach slightly. I’ll try to build a parametric Fusion model that uses the servo dimensions as input parameters. In theory, this should make it possible to create a version of Tiny Engineer that works with any standard-shaped servo.

[aza811]

It would be great if SG90(MG90S) servos were supported.Please make 3D printing files for at least these servos; I can't find any HD1370A

[jamro]

Servos arrived! :) I’m now working on an improved parametric design that should make it easy to support any standard-shaped servo.

Once that’s done, I plan to regenerate all the parts to support both the Pololu FEETECH FS0307 and the SG90.