Background:

Operating switch adapted devices can be challenging depending on many factors including the use case, connection method, and adaptation method. There are devices such as RC cars and toys which can be adapted to operate through 3.5mm switch outputs, but it can be challenging to operate devices  through 3.5mm cables if they are created to function wirelessly.

Project Information:

M5-Access-Switch-Output is a Wi-Fi enabled Adaptive Switch Output device based on ESP32 M5StickC/M5StickCPlus which allows a user to wirelessly operate up to two switch adapted devices via a web browser.

M5-Access-Switch-Output aims to provide a more affordable wireless switch output solution alternative to available commercial options. All the components can be purchased online, the custom PCB can be fabricated using online PCB fabrication services, and the enclosure files can be downloaded and 3D printed from project repository.

Usage:

M5-Access-Switch-Output allows the end user to connect up to two adaptive switches to their host device through two available 3.5mm stereo jacks. The switch interface can operate in multiple modes, and the end user can switch between the modes by simply holding and pressing Switch A for four seconds. M5-Access-Switch-Output can be used to activate up to switch adapted devices through the two 3.5mm switch output jacks. The device acts as a wireless access point which allows the user to connect to the access point and send output activations via a web browser.

Features:

Battery and sleep mode:

M5-Access-Switch-Output uses an internal Lithium-ion battery which can provide 1.5 to 3 hours of power based on the usage. The sleep mode built-in to the device allows to save power when the device is not used.

Connection:

The device is connected to the host device through Wi-fi connection.

Instructions:

All the required assembly documentation, software, hardware are documented in the project github repository. All the necessary electronics for this project are listed and can be purchased online via provided hyperlinks in the bill of materials (BOM) file.

Compatibility:

Modern web browsers including:

• Chrome
• Microsoft Edge
• Firefox
• Safari