N29j9

usbtoradio

Overview

This wired keyboard adapter supports Bluetooth and connects to wireless. The 2.4G wired connection uses an RP2040 to receive the wired keyboard signal and outputs it to a Bluetooth or 2.4G receiver via an NRF52810.
It supports Bluetooth 5.2
and has an onboard charging circuit. When fully charged, the red light will turn off or flash slightly.
DIY users can test Bluetooth first. The 2.4G connection uses an ESB Nordic solution. The receiver can be purchased separately and
used for WebUART control interaction (https://webuart.com/). Using the default 115200 MHz frequency, inputting "
unpair" allows for re-binding of Bluetooth channels:
Channel 1 -- enters BLE1 channel; Channel 2 -- enters BLE2 channel; Channel 4 -- enters the 2.4G channel.

The firmware has been uploaded to

the community forum (297974560).

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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