Jannik Beyerstedt
65fc825250
[FIX] Schematics: Revised values and PCB errata text
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* fixed trim pot range at VU meter
* TODOs removed (5V V_LED didn't work out, 10uF at LM386 wasn't better, VU meter filtering not needed)
* phantom power voltage changed and readme chapter added
* hardware errata: gain pot. pins are swapped, ground plane isn't fully connected
Footprints and PCB aren't fixed to keep the schematic compatible with the existing PCBs!
2021-09-05 20:08:08 +02:00
Jannik Beyerstedt
ce546c151c
[TIDY] remove old VU meter project
2021-09-02 20:46:52 +02:00
Jannik Beyerstedt
38b97f0546
PCB: Channel strip design
2021-06-02 21:31:30 +02:00
Jannik Beyerstedt
14f2e14b36
PCB: Line in/out and mics summing design
2021-06-02 21:30:52 +02:00
Jannik Beyerstedt
5edee823cb
Schematics: Add missing functionality, add footprints, fix todos
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- Add On-Air button
- Lower frequency for the input HPF
- (final) button footprints
- (final) potentiometer values and footprints
2021-05-30 22:42:17 +02:00
Jannik Beyerstedt
af20be8f0e
[TIDY] Channel Strip: Integrate VU Meter
2021-05-24 00:06:31 +02:00
Jannik Beyerstedt
5b26ac5c22
[TIDY] Split old design in new hierarchal layout
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TODO: Shrink channel strip to A4 paper size, integrate VU meter
2021-05-23 18:29:08 +02:00
Jannik Beyerstedt
f35301f409
Main: Add 15V phantom power
2020-12-14 00:31:43 +01:00
Jannik Beyerstedt
d8e0d7cb9f
Main: Summing design flaw fixed; better headphone vol. range
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- Multiple R and C value adaptions
- Line Input: No relevant difference between INA134 and own circuit -> LM833 chosen
- Signal busses/ summing module inputs fixed
- TODO: On-Air Button
- TODO: Update PCB layout
2020-12-13 22:02:02 +01:00
Jannik Beyerstedt
fc7e1fbc8b
VU meter: add -15V, fix footprints, specify LED resistors
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TODO: Decide on signal smoothing
2020-12-13 22:01:46 +01:00
Jannik Beyerstedt
6dc353d916
final fixes for first prototype PCB order
2020-11-13 00:40:18 +01:00
Jannik Beyerstedt
1432d0e215
Refine headphone mix requirements, fix signal flow
2020-11-12 01:11:14 +01:00
Jannik Beyerstedt
539b76bf61
Schematic Main: Add corrected headphone amp
2020-11-09 23:22:35 +01:00
Jannik Beyerstedt
0d9ebbe9ac
Move VU-Meter to own project
2020-11-09 01:52:43 +01:00
Jannik Beyerstedt
6ad73c21d6
Schematic: Bugfixes, VU meter draft, first development PCB draft
2020-11-02 01:00:47 +01:00
Jannik Beyerstedt
55a1890b3f
Schematic: Proof of concept (one microphone)
2020-10-12 19:47:14 +02:00
Jannik Beyerstedt