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STD Portable Headset + Aux Mixer
Portable Headset + Aux Mixer
License
CC-BY-NC 3.0
License: CC-BY-NC 3.0- 0
Update time：
2023-04-27 19:09:42
Creation time：
2023-03-04 09:27:00
Description
Description
Check the ERRATA (second sheet) before implemeting!
Inputs and outputs:
- TRRS Headset connector (passive headphones + mic for voice)
- AUX: Stereo line in (mixed to mono)
- Mixed into headphones for monitoring
- Mixed into mixed output for recording/streaming
- TRRS connector for stereo input + mic level mixed output (Aux + Voice)
Designed to be used with a portable guitar amp or other line level device to call into a conference (e.g. Zoom) via a mobile phone. Tested with a standard iPhone Lightning->TRRS adapter.
DISCLAIMER: No warranties or guarantees of any kind. It works for me but it may not work for you. It may destroy your devices. You have been warned. I assume no responsibility for any damanges caused by anyone using or implementing this design.
Design Drawing
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | HDR-F-2.54_1x3 | AUX_IN | HDR-TH_3P-P2.54-H-M-W10.4 | 1 |
| 2 | 9V | BAT | HDR-TH_2P-P2.54-H-M-W10.4 | 1 |
| 3 | 330u | C1,C6 | CAP-D10.0-F5.0 | 2 |
| 4 | 1u | C2 | RAD-0.2 | 1 |
| 5 | 1u | C3,C4,C5,C7 | CAP-D5.0×F2.0 | 4 |
| 6 | 10u | C8 | CAP-D5.0×F2.0 | 1 |
| 7 | 220u | C9,C10 | CAP-D10.0XF5.0 | 2 |
| 8 | 100n | C11 | RAD-0.1 | 1 |
| 9 | 100n | C12 | CERAMIC-5.08 | 1 |
| 10 | 1N4002 | D1 | 1N4002 | 1 |
| 11 | HDR-F-2.54_1x3 | H1 | HDR-F-2.54_1X3 | 1 |
| 12 | HDR-F-2.54_1x4 | HS_IN,HS_OUT | HDR-TH_4P-P2.54-H-M-W11.0 | 2 |
| 13 | LED-0603_R | LED1 | HDR-TH_2P-P2.54-V-M-1 | 1 |
| 14 | POT_MIC_10k | POT_MIC | HDR-TH_3P-P2.54-H-M-W10.4 | 1 |
| 15 | 10k | R1,R2,R3,R4,R5,R7,R9,R11,R12,R17,R18,R19,R23,R24,R25 | R_AXIAL-0.4 | 15 |
| 16 | 1k | R6,R15,R20,R21 | R_AXIAL-0.4 | 4 |
| 17 | 2k2 | R8,R14,R22 | R_AXIAL-0.4 | 3 |
| 18 | 100 | R10,R13,R16,R26 | R_AXIAL-0.4 | 4 |
| 19 | TRIM_AUX_1k | TRIM_AUX | TRIM_POT | 1 |
| 20 | TLE2426CP | U2 | PDIP-8_L9.6-W6.4-P2.54-LS7.9-BL-1 | 1 |
| 21 | UA741CN | U3 | DIP8 | 1 |
| 22 | TL074 | U1 | PDIP-14_L19.3-W6.4-P2.54-LS7.9-BL-1 | 1 |
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