AVR

mi:muz:tuch (MIDI Controller with flexible touch keys) AVR Version

mi:muz:tuch is a USB MIDI controller with capacitive touch sensor. It has now two indivisual versions, AVR or STM32.

And also, Web preset configurator is available to Configurator. MIDI note numbers be able to change to You want.

AVR Version (ATtiny44 16Mhz with ATmega8A 8Mhz)

AVR version of mi:muz:tuch (v0.1x) is based mi:muz:expr#2 for 'Hybrid MIDI feature, It can be able to connect to PC's USB Port using V-USB or mi:muz:mstr (I2C master) devices's I2C port using I2C slave mode.

Version

• v0.11 (2016.07.31)

Known Issues

• v0.1x does not work properly when connected to a USB2.0 Hub. (V-USB's general issue... unfixable...)
• [v0.1x does not work USB Mode when ch#6 is enable.] (mimuz/mimuz-avr-core#4)

Schematic

Top View

Bottom View

Eagle Files

eagle files (v0.11)

parts

• ATtiny44A-SSU * 1
• ATmega8A-AU * 1
• Zener diode(SOD323) 3.6V * 2
• Crystal 16Mhz (5032 2Pad) * 1
• Ferrite beads * 2 [ID1,ID2]
• 100Ω(0603) * 2 (For USB D+, D- Line)
• 470Ω(0603) * 1 (For ATtiny44 LED)
• 1kΩ(0603) * 6 (For ATmega8A touch line LED)
• 4.7kΩ(0603) * 1 (D- Line Pull up)
• 10kΩ(0603) * 1 (Tactical switch pull down)
• 1MΩ(2012) * 6 (For Touch Sensor)
• 3mLED * 7
• 22pF(0603) * 2
• 0.1uF(0603) * 5
• 22uF(0805) * 1
• Switch * 1
• Pin headers (2.54mm) 2×3 * 2 WARNING: if you have v0.1 board, it has a bug that missing junction from ATmega8A to ISP.

sketches

• Touch Sensor (for ATmega8A)
• Touch Sensor to Hybrid MIDI bridge (for ATtiny44A)

Licenses

Hardware (Schematics), Configurator

Creative Commons Attribution 4.0 International (CC BY 4.0)

Software (Sketches/Libraries)

GNU General Public License, version 2 (GPL-2.0).

See lso HybridMidiAttiny.