Anybody wants to beta test a BLE Stepper Motor Analyzer?

zapta

https://github.com/zapta/ble_stepper_motor_analyzer

I have batch of 5 units of which I plan to make 4 available to beta testers. This is a variant of the stepper motor analyzer which transmits the data in real time to an app on a Windows or Mac PC (it may or nor work on Linux, I didn't test it.).

What does it do?
It's a small board that you can embed in your printer, connected to a stepper motor and powered by a DC supply (4.5 to 30V) that uses bluetooth to transmits data in real time to a python program that runs on a computer.

I will ask for $35 in Amazon.com gift card to cover the out of pocket expenses, including world wide shipping.

Caveats

This is an experimental project that may be require technical TLC and hand holding so preference is for people that are handy with Python, microcontrollers, etc. It is provided AS-IS.
The entire design is open sourced at https://github.com/zapta/ble_stepper_motor_analyzer but there is no guarantee of long term maintenance or bug fixes on my part. I may take the project to a different direction such as switching the MCU to ESP32.
If you will want to update the firmware in the future, you will need to buy a compatible programmer. The low cost ones I am aware of are Segger Edu Min (normal cost $20, currently not available) and Nordic nrf52 DK which is about $40).
Three of the four boards are with external antenna connector and are better fit for enclosed 3D printers. The external antennas are not included but are available on Amazon (2.45Ghz, U.FL connector). The fourth board has an on board chip antenna which is included.
This project is for education purposes and I don't plan to commercialized it but anybody else can, since the open source license is permissive.

jay_s_uk

@zapta I'd be interested

JoergS5

@zapta I'm interested, especially to try implementing the DWC plugin for it, we talked about it.

zapta

@jay_s_uk, @JoergS5, please send me a direct message with your shipping information and whether you prefer an internal or external antenna.

Please provide your information by these fields of our local post office form:

JoergS5

@zapta I sent you my information by chat, is this ok? I don't have or find other contact information.

zapta

Thanks @joergs5 and @jay_s_uk, got your information. I plan to send the devices soon. I had an unexplained reliability issue so verifying again that the hardware works. I hope these devices will last.

JoergS5

@zapta for me you don't need to hurry, I need to finish robot development before I can start with the DWC plugin for the motor analyzer. Please check calmly.