jannik/c3lingo-interpreter-unit
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Author SHA1 Message Date
Jannik Beyerstedt 04b76dfa98 PCB: Update for new schematic (still THT for now) 2023-01-04 00:43:15 +01:00
Jannik Beyerstedt 38a8ab0895 Schematics: Fix multiple issues with initial prototype 
- Removed high-pass filter between microphone pre-amp and gain as it made things sound worse
- Removed low-pass filter before VU meter as it looked fine without
- Connect VU meter to +15 V directly as 5 V didn't work
- Footprint of the gain potentiometer (Alps RK09) seems to be fixed with the KiCad 6 library
 2022-12-31 00:26:04 +01:00
Jannik Beyerstedt ae12e7a092 KiCad 6: Update power flag symbols 
Power flags were updated in the new KiCad 6 library, which was a warning in the ERC.
 2022-12-30 22:39:31 +01:00
Jannik Beyerstedt b7f3061856 Upgrade project to KiCad 6 
Item annotations were re-generated as there were duplicate items otherwise somehow. This means, that some item numbers have changed!
 2022-12-04 21:42:34 +01:00
Jannik Beyerstedt 65fc825250 [FIX] Schematics: Revised values and PCB errata text 
* 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 b2358fc77f [DOC] Add BOM with some approx. prices 2021-06-03 23:42:35 +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 
- 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 
TODO: Shrink channel strip to A4 paper size, integrate VU meter
 2021-05-23 18:29:08 +02:00
Jannik Beyerstedt a47afb72f5 [DOC] Add some data sheets 2021-05-22 19:20:30 +02:00
Jannik Beyerstedt da7faf1e91 Merge development: UI layout + UI BOM decisions 2021-04-18 17:15:47 +02:00
Jannik Beyerstedt 5629853d65 [DOC] reworked button/ switch options 2021-04-17 23:12:01 +02:00
Jannik Beyerstedt eccdc8b24f [DOC] reworked potentiometer options 2021-04-11 22:16:40 +02:00
Jannik Beyerstedt 3af2e00e27 [TIDY] restructure readme 2021-04-11 18:23:45 +02:00
Jannik Beyerstedt 1d267e46f7 Decide on a potentiometer for UI elements (schematic outdated!) 2021-02-15 23:04:56 +01:00
Jannik Beyerstedt e6a98dd660 Add UI layout draft 2021-02-07 18:00:54 +01:00
Jannik Beyerstedt f35301f409 Main: Add 15V phantom power 2020-12-14 00:31:43 +01:00
Jannik Beyerstedt cdfdfbcc50 Merge development: PCB design fixes 2020-12-13 22:05:00 +01:00
Jannik Beyerstedt d8e0d7cb9f Main: Summing design flaw fixed; better headphone vol. range 
- 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 
TODO: Decide on signal smoothing
 2020-12-13 22:01:46 +01:00
Jannik Beyerstedt 6062153db0 Merge development: v0.1 first prototyping PCB 2020-11-13 00:42:22 +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 01f539128d update schematic PDFs 2020-11-10 20:19:15 +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 d1a367d481 Docs: Add signal flow graph 2020-11-02 00:57:57 +01:00
Jannik Beyerstedt 55a1890b3f Schematic: Proof of concept (one microphone) 2020-10-12 19:47:14 +02:00
Jannik Beyerstedt 48d69388ee [DOC] Add basic requirements 2020-10-04 09:32:09 +00:00
Jannik Beyerstedt 3152f11516 Initial commit 2020-10-04 08:49:50 +00:00