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[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)
* 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!
Jannik Beyerstedt 3 months ago
parent
commit
d147e966c1
  1. 11
      README.md
  2. BIN
      c3lingo_unit-assembly.pdf
  3. 2
      schematics/c3lingo_unit-assembly/c3lingo_unit-assembly.pro
  4. 6
      schematics/c3lingo_unit-assembly/c3lingo_unit-assembly.sch
  5. 24
      schematics/c3lingo_unit-assembly/c3lingo_unit-channel/c3lingo_unit-channel.sch
  6. 10
      schematics/c3lingo_unit-assembly/c3lingo_unit-mix_io/c3lingo_unit-mix_io.sch
  7. 41
      schematics/c3lingo_unit-assembly/kicad-libraries/c3lingo_unit-footprints.pretty/Potentiometer_Alps_RK09K_Single_Vertical-patched.kicad_mod

11
README.md

@ -80,8 +80,6 @@ For the microphone preamp, we are using the NE5534 low-noise opamp with a circui
In a normal mixer, you would be able to lower the microphone's volume to zero.
But in our case we just need on/ off and some gain range to adjust for different microphones and loudness of different people.
TODO: Integrate the On-Air button with it's LEDs
### Line Input/ Input Module
The line input must not be amplified at all, because loudness control of the headphones is done by the headphone amplifier section.
@ -269,24 +267,23 @@ Electrolytic capacitors should have 25 V voltage rating, unless otherwise specif
| Count | Manufacturer + Art. No. | Description | €/ pc.| Distributor Order No.
|-------|---------------------------|-----------------------------------|-------|----------------------
| 1 | Neutrik NCJ6FA-H | Stage Line Input | 1.10 | Thomann 250931
| 1 | Neutrik NC3MAAH | Mix Line Output | 0.78 | Voelkner X39973
| 1 | Neutrik NC3MAAH | Mix Line Output | 0.78 | Voelkner X39973, Mouser 568-NC3MAAH
| 1 | PTSM 0,5/ 2-2,5-V THR | PCB Output | 0.50 | Mouser 651-1770953, DigiKey 277-2086-1-ND
| 1 | PTSM 0,5/ 3-2,5-H THR | PCB PowerSupply | 0.70 | Mouser 651-1770898, DigiKey 277-2080-1-ND
| 1 | PTSM 0,5/ 4-2,5-V THR | PCB Inputs | 0.80 | Mouser 651-1770979, DigiKey 277-2088-1-ND
| 1 | Vishay M64Y104 | 100K trim pot: Line input adj. | 0.83 | Reichelt VIS M64Y104KB40
| 2 | LM833N | Generic Op-Amp | 0.75 | Mouser 926-LM833N/NOPB, DigiKey 296-44419-5-ND
| 2 | LM833N | Generic Op-Amp | 0.75 | DigiKey 296-44419-5-ND, Mouser 926-LM833N/NOPB
| 1 | DRV134PA | Line Driver | 4.75 | Mouser 595-DRV134PA, DigiKey DRV134PA-ND
| 3 | DIP-8 Socket | for LM833N, DRV134PA | 0.03 | Reichelt GS 8
| 1 | Cer. Cap. 22pF | C_Disc_D5.0mm_W2.5mm_P5.00mm | 0.33 | DigiKey 399-9723-ND, Mouser TODO
| 1 | Cer. Cap. 47pF | C_Disc_D5.0mm_W2.5mm_P5.00mm | 0.33 | DigiKey 399-C315C470K5G5TA-ND, Mouser TODO
| 1 | Cer. Cap. 220pF | C_Disc_D5.0mm_W2.5mm_P5.00mm | 0.31 | DigiKey 399-9802-ND, Mouser TODO
| 4 | Cer. Cap. 100nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | 0.20 | DigiKey 399-4329-ND, Mouser TODO
| 2 | Cer. Cap. 1uF | C_Disc_D5.0mm_W2.5mm_P5.00mm | | (TODO: just use 100 nF or an el. cap.)
| 6 | Cer. Cap. 100nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | 0.20 | DigiKey 399-4329-ND, Mouser TODO
| 6 | 10K | Metal film resistor | 0.02 | Average price at 100 pcs
| 5 | 22K | Metal film resistor | 0.02 | Average price at 100 pcs
| 1 | 3.3K | Metal film resistor | 0.02 | Average price at 100 pcs
| 1 | 47K | Metal film resistor | 0.02 | Average price at 100 pcs
| | | **SUM** | 13.48 | (1uF calculated as 100nF)
| | | **SUM** | 13.48 |
#### Channel Strip Components

BIN
c3lingo_unit-assembly.pdf

Binary file not shown.

2
schematics/c3lingo_unit-assembly/c3lingo_unit-assembly.pro

@ -1,4 +1,4 @@
update=Saturday, 29 May 2021 at 00:01:50
update=Thursday, 02 September 2021 at 20:45:35
last_client=kicad
[general]
version=1

6
schematics/c3lingo_unit-assembly/c3lingo_unit-assembly.sch

@ -5,10 +5,10 @@ $Descr A4 11693 8268
encoding utf-8
Sheet 1 5
Title "c3lingo interpeter unit"
Date "2021-05-28"
Rev "v0.2"
Date "2021-09-02"
Rev "v0.2.1"
Comp "Jannik Beyerstedt (jtbx)"
Comment1 "Prototype 1"
Comment1 "Prototype 1 (with errata)"
Comment2 ""
Comment3 ""
Comment4 ""

24
schematics/c3lingo_unit-assembly/c3lingo_unit-channel/c3lingo_unit-channel.sch

@ -5,10 +5,10 @@ $Descr A3 16535 11693
encoding utf-8
Sheet 3 5
Title "c3lingo interpeter unit -- channel strip"
Date "2021-05-28"
Rev "v0.2"
Date "2021-09-02"
Rev "v0.2.1"
Comp "Jannik Beyerstedt (jtbx)"
Comment1 "Prototype 1"
Comment1 "Prototype 1 (with errata)"
Comment2 ""
Comment3 ""
Comment4 ""
@ -100,8 +100,8 @@ F 4 "+DIP-14 Socket" H 7100 8400 50 0001 C CNN "Model"
5 7100 8400
0 -1 -1 0
$EndComp
Text Notes 1850 7900 0 50 ~ 0
Buffer/ Rectifier\nGain: 3.9
Text Notes 1850 8000 0 50 ~ 0
Buffer/ Rectifier\nGain: 15\n(3.9 + 12 dB for\ntrim pot. headroom)
$Comp
L Comparator:LM339 U306
U 5 1 60B42907
@ -195,7 +195,7 @@ AR Path="/60AE7597/60B42949" Ref="R420" Part="1"
AR Path="/60AE80F3/60B42949" Ref="R520" Part="1"
AR Path="/60B42949" Ref="R120" Part="1"
F 0 "R320" V 2843 6500 50 0000 C CNN
F 1 "3.9K" V 2934 6500 50 0000 C CNN
F 1 "15K" V 2934 6500 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2980 6500 50 0001 C CNN
F 3 "~" H 3050 6500 50 0001 C CNN
1 3050 6500
@ -732,7 +732,7 @@ Wire Wire Line
Wire Wire Line
9900 10800 9900 10500
Text Notes 4250 8450 0 50 ~ 0
Signal Smoothing\nTODO: Remove all together!?
Signal Smoothing\n==> DNP (not required)
$Comp
L Device:R R347
U 1 1 60B4292A
@ -1345,8 +1345,6 @@ F 3 "" H 5550 7800 50 0001 C CNN
1 5550 7800
1 0 0 -1
$EndComp
Text Notes 13550 6700 0 50 ~ 0
TODO: Try with V_LED = 5V\nrd: 2.3 V (390R @15V)\ngn: 2.4 V (390R @15V)\nye: 2.6 V (390R @15V)
$Comp
L power:+15V #PWR0329
U 1 1 60B429E4
@ -2649,8 +2647,6 @@ F 3 "~" H 12850 4050 50 0001 C CNN
1 12850 4050
-1 0 0 -1
$EndComp
Text Notes 14400 2500 0 50 ~ 0
TODO: Change to 10 uF?
Wire Wire Line
13500 2900 13500 3650
Wire Wire Line
@ -4025,4 +4021,10 @@ F 3 "~" H 3400 10750 50 0001 C CNN
1 3400 10750
1 0 0 -1
$EndComp
Text Notes 11800 9900 0 58 ~ 12
PCB Errata:\n- R302 (R102 on PCB) has pins 1 and 3 swapped. Connect R305 (R105) directly to the left\n potentiometer pin!\n- The ground plane at the headphone mix potentiometers is not connected to the remaining\n ground plane/ power input. Place a jumper manually!
Text Notes 4650 3750 0 50 ~ 0
DNP R312 and\nreplace C309 with\na jumper!
Text Notes 8000 10200 0 50 ~ 0
Bridge V_LED to +15V\n(5V V_LED didn’t work)
$EndSCHEMATC

10
schematics/c3lingo_unit-assembly/c3lingo_unit-mix_io/c3lingo_unit-mix_io.sch

@ -5,10 +5,10 @@ $Descr A4 11693 8268
encoding utf-8
Sheet 2 5
Title "c3lingo interpeter unit -- mix and line I/O"
Date "2021-05-28"
Rev "v0.2"
Date "2021-09-02"
Rev "v0.2.1"
Comp "Jannik Beyerstedt (jtbx)"
Comment1 "Prototype 1"
Comment1 "Prototype 1 (with errata)"
Comment2 ""
Comment3 ""
Comment4 ""
@ -515,7 +515,7 @@ L Device:C C206
U 1 1 604659B0
P 5950 4050
F 0 "C206" V 5698 4050 50 0000 C CNN
F 1 "1uF" V 5789 4050 50 0000 C CNN
F 1 "100nF" V 5789 4050 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5988 3900 50 0001 C CNN
F 3 "~" H 5950 4050 50 0001 C CNN
1 5950 4050
@ -526,7 +526,7 @@ L Device:C C209
U 1 1 60444365
P 5950 4950
F 0 "C209" V 5698 4950 50 0000 C CNN
F 1 "1uF" V 5789 4950 50 0000 C CNN
F 1 "100nF" V 5789 4950 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5988 4800 50 0001 C CNN
F 3 "~" H 5950 4950 50 0001 C CNN
1 5950 4950

41
schematics/c3lingo_unit-assembly/kicad-libraries/c3lingo_unit-footprints.pretty/Potentiometer_Alps_RK09K_Single_Vertical-patched.kicad_mod

@ -0,0 +1,41 @@
(module Potentiometer_Alps_RK09K_Single_Vertical-patched (layer F.Cu) (tedit 6131142B)
(descr "Potentiometer, vertical, Alps RK09K Single, http://www.alps.com/prod/info/E/HTML/Potentiometer/RotaryPotentiometers/RK09K/RK09K_list.html")
(tags "Potentiometer vertical Alps RK09K Single")
(fp_text reference REF** (at 6.05 -10.15) (layer F.SilkS)
(effects (font (size 1 1) (thickness 0.15)))
)
(fp_text value Potentiometer_Alps_RK09K_Single_Vertical-patched (at 6.05 5.15) (layer F.Fab)
(effects (font (size 1 1) (thickness 0.15)))
)
(fp_line (start 13.25 -9.15) (end -1.15 -9.15) (layer F.CrtYd) (width 0.05))
(fp_line (start 13.25 4.15) (end 13.25 -9.15) (layer F.CrtYd) (width 0.05))
(fp_line (start -1.15 4.15) (end 13.25 4.15) (layer F.CrtYd) (width 0.05))
(fp_line (start -1.15 -9.15) (end -1.15 4.15) (layer F.CrtYd) (width 0.05))
(fp_line (start 13.12 -7.521) (end 13.12 2.52) (layer F.SilkS) (width 0.12))
(fp_line (start 0.88 0.87) (end 0.88 2.52) (layer F.SilkS) (width 0.12))
(fp_line (start 0.88 -1.629) (end 0.88 -0.87) (layer F.SilkS) (width 0.12))
(fp_line (start 0.88 -4.129) (end 0.88 -3.37) (layer F.SilkS) (width 0.12))
(fp_line (start 0.88 -7.521) (end 0.88 -5.871) (layer F.SilkS) (width 0.12))
(fp_line (start 9.184 2.52) (end 13.12 2.52) (layer F.SilkS) (width 0.12))
(fp_line (start 0.88 2.52) (end 4.817 2.52) (layer F.SilkS) (width 0.12))
(fp_line (start 9.184 -7.521) (end 13.12 -7.521) (layer F.SilkS) (width 0.12))
(fp_line (start 0.88 -7.521) (end 4.817 -7.521) (layer F.SilkS) (width 0.12))
(fp_line (start 13 -7.4) (end 1 -7.4) (layer F.Fab) (width 0.1))
(fp_line (start 13 2.4) (end 13 -7.4) (layer F.Fab) (width 0.1))
(fp_line (start 1 2.4) (end 13 2.4) (layer F.Fab) (width 0.1))
(fp_line (start 1 -7.4) (end 1 2.4) (layer F.Fab) (width 0.1))
(fp_circle (center 7.5 -2.5) (end 10.5 -2.5) (layer F.Fab) (width 0.1))
(fp_text user %R (at 2 -2.5 90) (layer F.Fab)
(effects (font (size 1 1) (thickness 0.15)))
)
(pad 1 thru_hole circle (at 0 -5) (size 1.8 1.8) (drill 1) (layers *.Cu *.Mask))
(pad 2 thru_hole circle (at 0 -2.5) (size 1.8 1.8) (drill 1) (layers *.Cu *.Mask))
(pad 3 thru_hole circle (at 0 0) (size 1.8 1.8) (drill 1) (layers *.Cu *.Mask))
(pad "" np_thru_hole circle (at 7 -6.9) (size 4 4) (drill 2) (layers *.Cu *.Mask))
(pad "" np_thru_hole circle (at 7 1.9) (size 4 4) (drill 2) (layers *.Cu *.Mask))
(model ${KISYS3DMOD}/Potentiometer_THT.3dshapes/Potentiometer_Alps_RK09K_Single_Vertical.wrl
(at (xyz 0 0 0))
(scale (xyz 1 1 1))
(rotate (xyz 0 0 0))
)
)
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