Exercise/Characterize multiple servos connected via PCA9685 PWM controller
On this Page:
- Features
- Pictures of this project in use
- How to contribute
Additional pages:
- The rotary Encoder object - Reusable object for reading rotary encoder with push button
- The TIMI Interface object - Reusable object for driving all of the TIMI Displays
- The TIMI-130 Datasheet
- Testing Eyes - the 2nd device i exercized with this project
Most of us playing with servos in our projects have a single servo tester:
But when we are using a 16-channel PWM controller driving our servos we can either unplug each servo to test it or we can do something like this project!
I grabbed a TIMI-130 serial attached OLED display and a rotary encoder with pushbutton feature as be my interface and I used code I already had for the PCA9685 controller.
I then wrote a driver for the encoder which provided distance and velocity for the turning part a single, double-click for the push button part. See RotaryEncoder page
Then I created a single TIMI interface object by porting the python TIMI library. Now I can drive the display. See TIMI Displays page
In the end my cobbled together tester looks like this:
And this is the tester connected to the back of the 6-servo hardware I'm characterizing:
Lastly, this is the output from the tester:
To use this exercisor simply connect to the PCA9685 i2c bus and run the project.
- Steps through each of the servos from 0-15
- Cycles LO and HI for each servo
- Reminds which end of the range is currently being tested
- Emits (via debug_ the final LO, HI values for each servo tested.
Enjoy!
This is a project supporting our P2 Development Community. Please feel free to contribute to this project. You can contribute in the following ways:
- File Feature Requests or Issues (describing things you are seeing while using our code) at the Project Issue Tracking Page
- Fork this repo and then add your code to it. Finally, create a Pull Request to contribute your code back to this repository for inclusion with the projects code. See CONTRIBUTING
If you like my work and/or this has helped you in some way then feel free to help me out for a couple of ☕'s or 🍕 slices!
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