This is the GitHub repository for https://buildcomics.com/uncategorized/g-rinder-and-the-textmeter/
It contains arduino code for the node MCU in the folder named "arduino".
An example in PHP in the folder called "server" .
In the folder "docs", some datasheets and pinouts as a reference
The base wiring is from the nodemcu to the MCP23017 which both drive the four HDLO-3416 displays. Refer to the comments in the top of the arduino code for the exact wiring, which you can happily change!
MIT License
Copyright (c) 2020 buildcomics
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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