User Section
Developer Section
Ressources
- Extract
- Find sdcard
- Flash image to SD-Card
- Resize image
- Find last sector of image partition table
- Crop empty space from image
- Compress image
- Github
- History (Assembly)
- OSC communication
- Teensy Firmware
Legal
A³ Mixer Assembly¶
V02¶
PCB V02¶
Housing V02¶
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Headphones¶
2 XLR sockets on the back are connected to a 6.3mm jack socket on the front. An external headphones amp is needed
Buttons¶
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Assembly¶
1 |
2 |
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Specifications¶
Multiplexer pin configuration¶
Multiplexer 1-4 (hc4051)¶
Function (potentiometer) |
Pin |
|---|---|
GAIN |
0 |
EQ HIGH |
1 |
EQ MID |
2 |
EQ LOW |
3 |
VOLUME |
4 |
FX SEND |
5 |
Multiplexer 5 (hc4051)¶
Function (potentiometer) |
Pin |
|---|---|
MASTER |
0 |
BOOTH |
1 |
PHONES MIX |
2 |
PHONES VOLUME |
3 |
TAP BUTTON |
4 |
FX FREQUENCY |
7 |
FX RESONANCE |
8 |
Multiplexer 6 (hc4051)¶
Function (buttons) |
Pin |
|---|---|
FX TOGGLE |
0-3 |
3D TOGGLE |
4-7 |
Leds¶
4 led-buttons for heapdphones prelisten function (pfl)
4x9 NeoPixel for input vu (ws2811)
10 NeoPixel for fx and 3d-section (ws2811)
1x 8x32 LED-Matrix max7219
Displays¶
5x 0.96 inch OLED SSD1306 Display I2C 128 x 64
TCA9548A I2C IIC Multiplexer
Estimated power consumption¶
Device |
Watts |
|---|---|
Raspberry Pi 3 Model B |
5W |
Teensy 4.1 |
2.5W |
46 NeoPixel |
13W |
8x32 Leds max7219 |
4.5W |
5x 0.96 inch OLED Display |
0.2W |
— |
— |
Sum |
25.2W |