2.1 mm dc panel-mount barrel jack connector (not in the prototype).2-24V to 5V DC-DC Boost-Buck converter (not in the prototype).3 or 5 pin female panel-mount XLR connector.NodeMCU Lua ESP8266 development board (replaced by a Wemos D1 mini in the final version).It consists of the following components : Here is the working prototype based on a NodeMCU board It has a 5 pin XLR connector, a 2.1 mm power connector, and a multi-color status LED: It quite closely follows the design of my Artnet-to-Neopixel LED strip module. To allow a convenient interface between the EEGsynth and this type of professional lighting systems, I built an Artnet-to-DMX512 converter. Professional stage and theatre lighting fixtures are mainly controlled over DMX512. ![]() ![]() ![]() Update 3 Sept 2022 – the code has moved to its own esp8266_artnet_dmx512 repository to improve the timing and jitter with I2S (following this comment). Update – added photo’s of second exemplar and screen shots of web interface for OTA. Update 6 April 2019 – I wrote a follow up post on the timing and jitter in DMX512 signals and fixed a bug in the firmware. Update 4 July 2019 – You may also want to check out this instructable, which describes a more sophisticated ESP8266-based solution. Update 1 August 2019 – added the connectors to the list of components.
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