2022-11-06 (Su) PoweredInlineSkatesRev2 Control over serial

I wanted a wireless controller for this project because skateboards and skates usually do that, and it makes sense. I looked through my bin of Bluetooth modules, but I could only find something compatible if I wanted to write a phone app. I didn't. I considered ordering one of the LoRa units and learning about that, but I want to ensure this project is smooth. I ordered some standard BT units for fast delivery. Until they arrived, I added serial recognition into my sketch, connected it to a USB↔Serial converter on another computer, and confirmed that the Arduino could see the incoming data.
Wired connection established

I split the program into a receiver and a transmitter. The transmitter will become the handheld unit with the potentiometer I will control. The receiver will connect to the ESC and accept incoming signals. I started with the receiver and programmed it to take values between 32 and 126 because they correspond to letters I can generate on a keyboard. I confirmed that letters and symbols sent from a laptop would change the servo position.

For the transmitter, I mapped the potentiometer to generate a value from 0-100, like in the early stages. Then I transmitted that value from its serial port to the receiver. I reprogrammed that side to recognize the original number range. I kept the servo working on the transmitter side to confirm I was moving the potentiometer. When I connected the transmitter and receiver, both servos moved together as I'd hoped.
They look pretty synchronized

The rest of the posts for this project have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8

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