ANTUMBRA
PATH
BUILDING INSTRUCTIONS
PCB V1.1
01. BUILD NOTES
Before you start building look through the build manual
so that you’ll be familiar with the building process and
you won’t run into any surprises!
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02. BUILD
00. Orient the PCB as seen on the left
01. Solder the ATMEGA328P-AU
(Check it’s orientation)
02. Solder the crystal oscillator
03. Solder the two MMBT3904s
00
01
02
03
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MCP6002
MCP6002
MCP6002
SN74HC595
SN74HC595
SN74HC595
DG409
DG409
MCP6002
16.000
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02. BUILD
DG408
04
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04. Solder the MCP6002
(Check it’s orientation)
05. Solder the SN74HC595 shift register
(Check it’s orientation)
06. Solder the DG409 switch IC
(Check it’s orientation)
07. Solder the DG408 switch IC
(Check it’s orientation)
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02. BUILD
08. Solder the 78L05 voltage regulator
09. Solder the LM4040 5V
MCP6002
MCP6002
MCP6002
MCP6002
10. Solder the two 1n5819 diodes
(Check their orientation)
SN74HC595
SN74HC595
SN74HC595
SN74HC595
DG409
DG409
DG409
DG409
DG408
DG408
DG408
DG408
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11. Solder the two ferrite beads
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471
471
471
471
471
02. BUILD
471
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15
278
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471
471
471
102
14
14. Solder the 13x 470R resistors
471
471
471
102
102
471
DG408
DG408
DG408
471
471
471
102
278
471
471
278
278
DG409
102
471
471
SN74HC595
DG408
13
278
DG409
471
SN74HC595
DG409
12
13. Solder the two 280R resistors
(Optional - They are for the jack LEDs)
MCP6002
471
SN74HC595
MCP6002
DG409
MCP6002
SN74HC595
MCP6002
12. Solder the two 178R resistors
(Optional - They are for the jack LEDs)
102
178
AT
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AT
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102
15. Solder 13x 1k resistors
17
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MCP6002
MCP6002
MCP6002
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471
471
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471
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102
471
471
471
471
471
471
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471
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AT
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AT
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178
178
471
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278
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102
471
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471
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471
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471
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471
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471
AT
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102
DG408
102
471
471
MCP6002
DG408
471
471
16.000
471
DG409
471
102
104
DG409
471
102
102
SN74HC595
102
471
SN74HC595
DG408
16
DG409
DG408
102
102
SN74HC595
DG409
102
SN74HC595
102
471
02. BUILD
102
471
16. Solder the single 10k resistor
17. Solder the 8x 100k resistors
18. Solder the two 22pF capacitors
19. Solder two 10nF capacitors
21
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104
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104
104
104
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104
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MCP6002
MCP6002
MCP6002
MCP6002
471
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471
471
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471
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104
102
471
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471
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AT
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AT
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AT
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471
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278
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102
471
471
471
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AT
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471
471
471
471
471
471
471
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102
104
471
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DG408
102
471
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16.000
102
DG409
471
471
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DG408
471
471
102
471
SN74HC595
471
104
102
DG409
20
DG408
471
102
471
SN74HC595
102
104
DG409
DG408
102
102
SN74HC595
DG409
102
SN74HC595
102
471
02. BUILD
102
471
20. Solder the 10x 100nF capacitors
21. Solder the single 470nF capacitor
22. Solder the two 10uF capcitors
(Check their orientation)
23. Solder the 14x SMD LEDs
(These are optional)
25
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MCP6002
MCP6002
MCP6002
471
471
471
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102
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471
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102
471
471
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471
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471
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AT
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AT
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471
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471
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471
471
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16.000
471
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471
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471
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102
471
471
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DG408
471
471
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102
DG409
24
DG408
471
102
471
SN74HC595
102
104
DG409
DG408
102
102
SN74HC595
DG409
102
SN74HC595
102
471
02. BUILD
102
471
24. Solder the 2x5 pin power header
25. Solder the 2x3 pin SPI header
26. Solder the 1x3 pin header
(This is optional)
27. Turn the PCB around
27
02. BUILD
DO NOT SOLDER YET!
28. Place the six LEDs
(Check their orientation!)
29. Place the 14x jacks
30. Place the two buttons and their caps
31. Screw in the spacer from the bottom side
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32.Now place the front panel on top, put the nuts on the
jacks, align everything nicely, and screw in a screw
from the front in the spacer as well. If you like how
it looks, solder everything on the other side!
You are done with building! Congratulations!
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03. UPLOADING SOF T WARE
22
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MISO
SCK
RST
1. Download the firmware from the Antumbra website.
2. Connect your AVR ISP device to the 6 pin ISP header
on the module. Pin 1 is marked with a dot.
5V
MOSI
GND
SPI PINS
3.Use an AVR programmer, like AVR ISP MKII with for
example AVRDUDESS to upload the code.
Fuse settings should be set to:
L-fuse: 0xff • H-fuse: 0xde • E-fuse: 0x05
4.After you’ve uploaded the firmware with bootloader,
connect the module to your power supply. If you were
successful, you should see the welcome animation.
PATH is designed by David Szebenyi under Antumbra.
www.antumbra.eu
Manual by David Szebenyi (www.aman.hu)
2020 • All rights reserved!
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