BKM-15R-mini, an alternative to the Sony BKM-15R controller for your BVM-A series monitor.

A small PCB that connects to an ESP32 Devkit V1 and an ENC28J60 module.

The ESP32 module should be the 30-pin "Devkit V1" which seems pretty common. Note that an 36-pin version also exists, the "original" Doit ESP32 Devkit V1", this version needs some "hacking" to work.

The ENC28J60 module exists in many versions. The one designed in here, is the 12-pin 5V version, sometimes referred to as "the large" version. It should run on 5V and have 12 pins (apparently a very close version with 10 pins running straight on 3.3V also exists).

The ESP32 should be loaded with the code from here: https://github.com/skumlos/bkm-15rduino

The "Disable WiFi" switch, disables wifi... I like hard switches for stuff like this. It's handy if you just want the physical keys (you could comment out all WiFi stuff from the code also of course...).

Press the FORCE_SETUP switch while pressing the RESET switch, to make the software go into configuration mode for WiFi setup and such.

Use a crossed ethernet cable or a switch between this and the BVM-A.

The ESP32 footprint and library symbol is originally by David Kleymann (https://github.com/davidkleymann/doit-esp32-devkit-kicad). I modified it to fit the seemingly more common 30 pin version of the ESP32 Devkit V1.

3D printable case on thingiverse.com

(2022) Martin Hejnfelt (martin@hejnfelt.com) www.immerhax.com

This work is free. You can redistribute it and/or modify it under the terms of the Do What The Fuck You Want To Public License, Version 2, as published by Sam Hocevar. See the LICENSE file for more details.