Pedalino™ has been superseed by PedalinoMini™.

Pedalino™ (discontinued)

I know. You are thinking: "yet another MIDI controller with Arduino". Pedalino™ is something new from any previous DIY projects and even better of commercial alternatives at a fraction of the cost.

Right now the hardware is just a working well prototype. It will be boxed when the hardware will be frozen.

<img src="logo/Pedalino_Transparent.png" width="180"/>

Smart wireless MIDI foot controller for guitarists and more.

• Plug-and-play with any MIDI-compatible app on iOS 8 and above as well as OS X Yosemite and above.
• High customizable using iOS or Android app
• 4 MIDI interface (USB, Bluetooth, WiFi, legacy DIN MIDI IN and MIDI OUT connectors)
• No extra drivers to connect Windows, macOS, iOS (iPad/iPhone) and Android
• USB MIDI class-compliant device
• Bluetooth LE MIDI (iOS and macOS compatible)
• Network MIDI (aka AppleMIDI or RTP-MIDI)
• ipMIDI
• Open Sound Control (OSC)
• IEEE 802.11 b/g/n Wi-Fi 2.4 GHZ with WPA/WPA2 authentication
• Bluetooth Low Energy 4.0
• MIDI routing from/to any interface (USB, Bluetooth, WiFi, legacy)
• MIDI clock master and slave
• MIDI Time Code (MTC) master and slave
• OSC to MIDI and vicecersa
• Any number of pedals of any type in any order
• Auto-sensing footswitches and expression pedals
• Modular assembly of easy to find hardware and re-use of open source software libraries

Applications

• Change preset to your favourite guitar rig
• Hands-free way to control your audio parameters during live performance
• Dramatically expanded audio system parameter control via WiFi, Bluetooth, USB, MIDI or OSC.
• Set your music free with wireless MIDI connectivity
• Bluetooth wireless MIDI adaptor for connecting instruments with MIDI IN/OUT terminals to your iOS devices (iPhone/iPad/iPod Touch) or Mac
• Transform legacy MIDI equipment to USB MIDI class-compliant device
• Transform wired MIDI equipment into wireless MIDI equipment
• Transform legacy MIDI equipment to OSC control surface
• Connect Windows to macOS and iOS devices via AppleMIDI or Bluetooth LE
• Send MIDI messages using an IR remote control from your sofa

Features

• Support for digital foot switches (momentary or latch), analog expression pedals and jog wheels (rotary encoders)
• 10 banks of 16 controllers each
• 3 user configuration profiles
• Each port can connect 1 expression pedal or up to 3 foot switches for a maximum of 48 foot switches.
• MIDI output via USB MIDI, Bluetooth, classic MIDI OUT connector, AppleMIDI (also known as RTP-MIDI) or ipMIDI via Wi-Fi
• Send the following MIDI events: Program Change, Control Code, Note On/Off or Pitch Bend
• MIDI channel, MIDI note, MIDI control code, MIDI program change can be configured by each pedal and by each bank
• Switch debouncing and analog noise suppression without decreasing responsiveness
• Invert polarity via software
• Individual automatic calibration of expression pedals. Manual fine tuning is not usually requested.
• Transform a linear expression pedal into log expression pedal and vice versa
• Responsive and mobile-first configuration web interface (http://pedalino.local)
• Configuration via IR remote control
• Change bank via IR remote control
• Simulate footswitch push via IR remote control
• Use any spare IR remote control
• Smart Config technology to help users connect to a Wi-Fi network through simple app on a smartphone.
• Firmware update via HTTP (http://pedalino.local/update)

iOS and Android App

The app made with Blynk is on the way. Final version will be released later this year. Here some sneak preview images.

<img src="https://github.com/alf45tar/Pedalino/blob/master/images/ios-live.png" width="280"/> <img src="https://github.com/alf45tar/Pedalino/blob/master/images/ios-bank.png" width="280"/> <img src="https://github.com/alf45tar/Pedalino/blob/master/images/ios-pedal.png" width="280"/>

Bill of materials

• Arduino Mega 2560 R3 or equivalent
• LCD Keypad Shield very popular 16x2 LCD based on the Hitachi HD44780 (or a compatible) chipset
• New Liquid Crystal library
• Bounce2 library
• ResponsiveAnalogRead library
• MD_Menu library
• MD_UISwitch library
• Arduino MIDI library

The rest is not mandatory but it depends of which features you want to support.

• USB MIDI class-compliant device

  • MocoLUFA firmware

• MIDI IN interface

  • 6N137 Single-Channel High Speed Optocoupler (6N138 may works too)

• WIFI only (Model A)

  • Any ESP8266/ESP12 board supported by Arduino core for ESP8266 WiFi chip with a serial interface available. A development board provide direct USB connection and 5V compatibility.
  • Tested on ESP8266 ESP-01S 1M WiFi module and YL-46 AMS1117 3.3V Power Supply Module (Arduino 3.3V pin cannot provide enough current for the ESP-01S stable operation)
  • Arduino core for ESP8266 WiFi chip

• WIFI and Bluetooth MIDI (Model B)

  • Any ESP32 board supported by Arduino core for ESP32 WiFi chip with a serial interface available (usually Serial2 on standard development board because Serial is connected to USB and Serial1 cannot be connected during reset)
  • Tested on DOIT ESP32 DevKit V1 4M dual-mode Wi-Fi and Bluetooth module
  • Arduino core for ESP32 WiFi chip

• AppleMIDI via WIFI

  • AppleMIDI for Arduino library

• OSC via WIFI

  • CNMAT OSC for Arduino library

• Infrared Remote Control

  • Any IR Receiver module (like KY-022 or equivalent) supported by IRremote library
  • IRremore library

• Bluetooth Remote Control

  • HM-10 (or compatible like HC-08) Bluetooth UART Communication Module

Pedalino™ Breadboard Prototype

MODEL A - WiFi only

MODEL B - WiFi and Bluetooth MIDI

Model A and B use HM-10 Bluetooth LE module to connect the app.

MODEL C - Arduino UNO R3 + ESP8266 - WiFi only

Due to memory limit of Arduino Uno R3 some of the features cannot be supported. We eliminated the superfluous ones and kept the most interesting ones.

• All the interfaces (USB, Bluetooth, WiFi, legacy DIN MIDI IN and MIDI OUT connectors) and protocols (NetworkMIDI, IPMIDI and OSC) are supported
• 5 banks of 8 controllers each
• 3 profiles
• Configuration via web interface only
• No LCD
• No app
• No IR remote control

First prototype

Firmware update

Pedalino is using 2 boards and 3 microcontrollers. All of them need to be flashed with the right firmware before using Pedalino.

Model|Board|Microcontroller|Firmware|Flashing software|Flashing hardware|Instructions -----|-----|-----|-----|-----|-----|----- Both|Arduino Mega 2560|ATmega2560<hr>ATmega16U2|Pedalino<hr>MocoLUFA|Arduino IDE/PlatformIO IDE<hr>Atmel's flip programmer|None|Click here<hr>Click here and here A|ESP-01S 1M|ESP8266|PedalinoESP|Arduino IDE/PlatformIO IDE|Arduino Mega|Click here B|DOIT ESP32 DevKit V1|ESP32|PedalinoESP|Arduino IDE/PlatformIO IDE|None|Click here

Pedal Wiring

Pedalino is designed to work with the majority of expression pedals on the market, but there are a few popular pedal types which are incompatible and need to use adapters in order to work with Pedalino.

There is no recognized standard for footswitch and expression p