1. Manuals
  2. Brands
  3. ANTUMBRA Manuals
  4. Microcontrollers
  5. TUNE
  6. Manual

ANTUMBRA TUNE Manual

Hide thumbs Also See for TUNE:
Table of Contents

Advertisement

Quick Links

Download this manual
ANTUMBRA
TUNE
MANUAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TUNE and is the answer not in the manual?

Questions and answers

Related Manuals for ANTUMBRA TUNE

Summary of Contents for ANTUMBRA TUNE

  • Page 1 ANTUMBRA TUNE MANUAL...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 01. INSTALLATION 02. JACK LIGHTS 03. FRONT 04. DISPLAY MODES 05. RELATIVE MODE 06. STROBE MODE 07. OUTPUT MODE 08. SCALE SELECTION 09. VU METER 10. SAVING 11. NOTE AND OCTAVE VIEW 12. “SCREENSAVER” MODE 13. ERROR DISPLAY 14.
  • Page 3 00. THANK YOU! Thank you for purchasing the Antumbra TUNE module! In this documentation you can find information about the installation and use of the module.

  • Page 4: Installation

    01. INSTALL ATION When you turn TUNE on the side, you should see the mod- ule as it is on the left illustration. Plug in the power cable to the power cable header pins, but BE CAREFUL with the ATMEGA328P-AU orientation of the cable! The RED STRIPE should be to- 16.000...

  • Page 5: Jack Lights

    02. JACK LIGHTS On the back there is a jumper for enabling the jack lights. Note that by enabling them the module draws additional current from the 12V rail. ATMEGA328P-AU 16.000 DG419 Jack lights jumper TL072...

  • Page 6: Front

    03. FRONT 1 Display LEDs 2 Mode button 3 Input jack 4 Output jack...

  • Page 7: Display Modes

    04. DISPL AY MODES Connect the output of your VCO to the TUNE input. Press the button for 1 second, release it when either the LED marked with 0 or - starts to blink. Now you are in dis- play mode selection. Press the button to toggle between the two modes.

  • Page 8: Relative Mode

    In this mode the current nearest note blinks fast, and above or below 1-3 LEDs are lit if the VCO frequency is out of tune. If the VCO frequency is higher than the cur- rent nearest notes LEDs are lit above, if it’s lower they are lit below.

  • Page 9: Strobe Mode

    In this mode the current nearest note blinks fast and is bright, an other dimmer LED is going up or down if the VCO is out of tune. The speed of the wandering LED indicates the distance from the nearest note, and it’s direction dis- plays which way the VCO has to be tuned.

  • Page 10: Output Mode

    07. OUTPUT MODE Press and hold the button for 2 seconds till the LEDs marked SUB or TRU are blinking, now release it. Press the button to toggle between the two modes. When the LED marked SUB is blinking the output jack pro- duces a square wave one octave below the input frequen- When the LED marked TRU is blinking, the input is fed to the output unmodified.

  • Page 11: Scale Selection

    08. SC ALE SELECTION Press and hold the button for 3 seconds till the LEDs marked 432 or 440 are blinking, now release it. Press the button to toggle between the two modes. The tuning mode changes the scale the module tunes to, select between A432Hz and A440Hz tuning modes.

  • Page 12: Vu Meter

    09. VU ME TER Press and hold the button for 4 seconds till the LEDs are not blinking anymore. Press the button to toggle between 0-5V and +/-5V modes. In 0-5V mode, the input signal is split once from -5-0V and once 0-5V, then the absolute larger is chosen.

  • Page 13: Saving

    10. SAVING The module saves it’s current state automatically each time you exit the menu so that it can recover your pref- erences on power cycles.

  • Page 14: Note And Octave View

    11. NOTE AND OCTAVE VIE W When you are not in the menu, press the button quickly to switch between note and octave view. read: Note display depends on the mode selection described previously. Octave is displayed by a slowly blinking LED, the octave number is written on the right side of the LED, it goes from -1 to 6 octaves.

  • Page 15: Screensaver" Mode

    12. “SCREENSAVER” MODE Once you start modulating your VCO, TUNE can go hectic trying to display the current note, to enter “screensaver” mode press the button twice quickly, now it shows that it’s in this mode by a single pulsating LED. To exit this...

  • Page 16: Error Display

    13. ERROR DISPL AY If there’s no jack present on the input no LEDs should be lit. If there is signal present but it’s level is too low, two LEDs going up and down from the middle start running. Increase the level till you reach the threshold and the module displays the current note.

  • Page 17: Accuracy

    14. ACCUR ACY Optimal waveform for measurement The signal fed to TUNE is turned into a square wave and is divided by two (sub output) to increase measurement ac- curacy in higher frequencies. The measurement accuracy should be between +/- 3 cents.

  • Page 18: Software Modifications

    15. SOF T WARE MODIFIC ATIONS Feel free to modify the software of your module, but at your own risk! Antumbra doesn’t take responsibility for damaged microcontrollers, if you proceed from here I as- ATMEGA328P-AU sume you know what you are doing.
  • Page 19 TUNE is designed by David Szebenyi under Antumbra. www.antumbra.eu Manual by David Szebenyi (www.aman.hu) 2020 • All rights reserved!

Table of Contents