Input-output board using only 2 or 3 wires for Arduino

[J-M-L]

@banjo33333

So the rotary encoders, the RFID badge and the PID system on the Arduino. The push buttons, the display commands, the clock and all the slow processes on the SBC_IO card.

My experience has been - even with newbies - that connecting a LCD 2004 over I2C and buttons to IO pins is not difficult at all. So if you can’t have the board handle some of the faster elements and need direct wiring, then I don’t think there is a market there for such a board with arduino or RPi.

May be for an extension to a desktop computer to have a specific device attached ?

There was work done on that front, look at GitHub - firmata/protocol: Documentation of the Firmata protocol., you would not have to reinvent the client part

The following is a list of Firmata client library implementations:

• processing
  • [GitHub - firmata/processing: processing client for firmata]
• python
  • [GitHub - MrYsLab/pymata4: A High Performance Python Client For Arduino Firmata]
  • [GitHub - MrYsLab/pymata-express: A Pure Python Asyncio Arduino Firmata Client]
  • [GitHub - firmata/pyduino: python client for firmata]
  • [GitHub - lupeke/python-firmata: Python bindings for the Firmata protocol]
  • [GitHub - tino/pyFirmata: Python interface for the Firmata (http://firmata.org/) protocol. It is compliant with Firmata 2.1. Any help with updating to 2.2 is welcome. The Capability Query is implemented, but the Pin State Query feature not yet.]
• perl
  • [GitHub - ntruchsess/perl-firmata: Perl implementation of the firmata client. Originally authored by Aki Mimoto (amimoto) this repository was transfered to Norbert Truchsess (ntruchsess) in 02/2013. Anybody willing to contribute is very wellcome! Please submitt pull-requests against branch 'dev']
  • [GitHub - rcaputo/rx-firmata: Asynchronous OO Perl interface to serial devices speaking the Firmata protocol (Arduino, et al.)]
• ruby
  • [GitHub - hardbap/firmata: A Ruby implementation of the Firmata protocol.]
  • [GitHub - PlasticLizard/rufinol: Interactive web interface for your Firmata enabled Arduino]
• clojure
  • [GitHub - nakkaya/clodiuno: Clojure API for the firmata protocol.]
  • [GitHub - peterschwarz/clj-firmata: clj-firmata provides access to Standard Firmata (http://firmata.org/) commands via clojure.]
• javascript
  • [GitHub - firmata/firmata.js: JavaScript implementation of the Firmata protocol]
  • [http://breakoutjs.com]
  • [GitHub - rwaldron/johnny-five: JavaScript Robotics and IoT programming framework, developed at Bocoup.]
• java
  • [GitHub - 4ntoine/Firmata: Firmata pure Java implementation]
  • [GitHub - kurbatov/firmata4j: Firmata client written in Java.]
  • [GitHub - reapzor/FiloFirmata]
  • [diozero/diozero-provider-firmata at main · mattjlewis/diozero · GitHub]
• .NET
  • [GitHub - SolidSoils/Arduino: C# .NET - Arduino library supporting simultaneous serial ASCII, Firmata and I2C communication]
  • [GitHub - dotnet/iot: This repo includes .NET Core implementations for various IoT boards, chips, displays and PCBs.]
• PHP
  • [Bitbucket]
  • [GitHub - kahagon/phpmake_firmata: Yet Another Firmata interface for PHP]
• Haskell
  • [http://hackage.haskell.org/package/hArduino]
• iOS
  • [GitHub - iFirmata/iFirmata: Firmata host implementation for ios]
• Dart
  • [GitHub - nfrancois/firmata]
• Max/MSP
  • [http://www.maxuino.org/]
• Elixir
  • [GitHub - entone/firmata: Firmata protocol in Elixir]
• Modelica
  • [Model Plug for Modelica Using Arduino: Wolfram System Modeler Libraries]
• golang
  • [GitHub - kraman/go-firmata: Arduino Firmata client for golang]
• Qt/QML
  • [GitHub - callaa/qfirmata: Firmata library for Qt/QML]
• Android/Kotlin
  • [GitHub - xujiaao/android-firmata: 👾 Firmata Protocol based, IoT Library for Android Developers.]
• Smalltalk
  • [GitHub - pharo-iot/Firmata: Firmata implementation for the Pharo Language]
• LabVIEW
  • [GitHub - KMurphs/labview-client-for-firmata: This is a client implemented in LabVIEW that interacts with an embedded device or constrained system that runs Firmata. This Library can optionally be used with TestStand to perform tests against the target device / system]
• vvvv/VL
  • [GitHub - vvvv/VL.IO.Firmata: Provides support for Firmata protocol in VL]

PS: I don’t like firmata so don’t take that as a recommendation. It’s more to let you know what’s out there.