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00. THANK YOU!

Thank you for purchasing the Antumbra EURD! EURD is an 
Arduino, built to be the heart of your DIY Eurorack project. 
It has a built in power supply, regulating the +12V of your 
PSU to 5V to power the microcontroller. It also has a built 
in SPI to allow you to upload code easily. The design of the 
module is focused to keep building clean and organised, 
and use less wiring where it’s not necessary. It’s a great 
way to kick off your project be it on the breadboard or a 
working prototype.

Summary of Contents for EURD

Page 1: ...ANTUMBRA EURD MANUAL ...

Page 2: ...TABLE OF CONTENTS 00 THANK YOU 01 OVERVIEW 02 BILL OF MATERIALS 03 ASSEMBLY 04 UPLOADING SKETCHES 05 POWERING UP ...

Page 3: ...ower supply regulating the 12V of your PSU to 5V to power the microcontroller It also has a built in SPI to allow you to upload code easily The design of the module is focused to keep building clean and organised and use less wiring where it s not necessary It s a great way to kick off your project be it on the breadboard or a working prototype ...

Page 4: ...01 OVERVIEW POWER CABLE HEADER Red stripe always on the LEFT GROUND PINS ANALOG REFERENCE PIN RESET PIN POWER SUPPLY PINS 12V 12V 5V GND ANALOG PINS A0 A5 DIGITAL PINS 0 13 SPI HEADER ...

Page 5: ...09 for other 1 x 10k Ohm resistor 1 x 16MhZ Crystal 2 x 22pF capacitor 2 54mm lead spacing 1 x ATMEGA328P PU microcontroller 1 x 28pin DIP IC socket 1 x 5pin double row male header 1 x 3pin double row male header 2 x 14pin single row male header They usually come in 40pin rows so you can cut them to the desired pin number ...

Page 6: ...Orient the PCB to be like on the picture to the left 1 Solder the crystal in place 2 Solder the 22pF capacitors orientation doesn t mat ter 3 Solder the IC socket in place the dent on the end should be on top 0 1 2 3 ...

Page 7: ... pins are on top 5 Solder the 10k resistor Note that it should be stand ing so bend the resistor like this 6 IMPORTANT 78L05 is rated for 100mA if you need bigger current see p 09 Solder the 78L05 voltage regulator so that the flat side faces the power pins down 4 5 6 ...

Page 8: ... pins and the plastic part are on the bottom of the PCB You can solder here of course female headers too if desired 9 Insert the ATMEGA328P PU in the socket so that the dent is on top If the pins are too wide use a snub nose plier to bend them a bit inwards on both sides or put it on the table on it s side so that one row of pins are flat on the table and apply a bit of pressure to bend them in 8 ...

Page 9: ...t of 100mA if you need bigger you can install other voltage regulators such as the LM7805 You can do this by either wiring up the appropriate legs of the voltage regulator to the appropriate holes on the PCB or you can try to fit it by bending the legs OUTPUT GROUND INPUT ...

Page 10: ...O or insert the EURD into a breadboard and connect the correct pins to the Arduino as described here illustrated on the left https www arduino cc en Tutorial ArduinoISP IMPORTANT NOTE Do not use the SPI and the pin setup at once Do not connect the unit to the Eurorack power source while it s connected to the SPI Arduino PIN 10 5V GND SPI HEADER OR PIN 11 PIN 12 PIN 13 ...

Page 11: ...04 POWERING UP Use an Eurorack 10pin ribbon cable to connect it to your system NOTE THAT THE RED STRIPE SHOULD ALWAYS BE ON THE LEFT marked by the white line on the PCB Now good luck and have fun ...

Page 12: ...EURD is designed by David Szebenyi under Antumbra www antumbra eu Manual by David Szebenyi www aman hu 2016 All rights reserved ...

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