jannik/c3lingo-interpreter-unit
Archived
1
0
Fork 0
Code Issues 4 Pull requests Projects Releases Wiki Activity

Merge development: UI layout + UI BOM decisions

Browse source
This commit is contained in:
Jannik Beyerstedt 2021-04-18 17:15:47 +02:00
parent cdfdfbcc50 5629853d65
commit da7faf1e91
12 changed files with 5746 additions and 4567 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

219
README.md
View file

@ -38,13 +38,16 @@ All inputs (besides the microphones) and outputs should:
This results in a signal flow like this: ![](docs/signal-flow.jpg)
## Status
### Tasks
- [x] Requirements collection
- [x] Electrical design draft/ proof of concept (breadboard)
- [x] Proof of concept validation
- [x] First PCB layout
- [x] First PCB layout (prototyping modules)
- [x] More testing/ validation
- [ ] Second PCB layout + casing prototype
- [ ] More testing/ validation
Help is always appreciated!
@ -56,27 +59,28 @@ Help is always appreciated!
- [x] Adjustable headphone mix and output volume
- [ ] ESD protection and galvanic isolation of line inputs and outputs
- [x] VU meter (own PCB)
- [ ] VU meter (integrated in front panel PCB)
- [ ] Mute and On-Air buttons
## Electrical Design
This chapter contains some notes on the electrical design.
Currently just the sources of the used circuit designs.
### Sources and Design Considerations
#### Microphone Input
##### Preamplifier
### Microphone Input
#### Preamplifier
For the microphone preamp, we are using the NE5534 low-noise opamp with a circuit design from [circuitlib microphone pre-amp](https://www.circuitlib.com/index.php/schematics/product/29-balanced-microphone-preamplifier).
##### Controllable Amplification
#### Controllable Amplification
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
### 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.
But the differential line-level signal must be converted to a single-ended signal by the input stage.
@ -85,7 +89,8 @@ The second part of that circuit was taken from the [circuitlib audio mixer tutor
TODO: How to achieve galvanic isolation?
#### Summing
### Summing
Summing is needed in two places: Creating the sum of all microphones (not adjustable, fixed output gain) and for the headphone mix (one input level adjustable).
A simple summing circuit using one operational amplifier is enough for our application, like in [circuitlib audio mixer tutorial](https://www.circuitlib.com/index.php/tutorials/product/39-how-to-build-an-audio-mixer).
@ -95,28 +100,140 @@ In our case, there are just two types of summing: All microphones for the interp
Because the stage input is quite independent of the interpreter's microphones, no special phase/ inversion considerations are needed.
And the microphones connected to our unit will experience the same inversions anyways.
#### Line Output Driver
### Line Output Driver
Line Output conversion is done by the [DRV134](https://www.ti.com/product/DRV134) IC.
TODO: How to achieve galvanic isolation?
#### Headphone Output Driver
### Headphone Output Driver
The headphone output needs a maximum output power of about 0.1 W and should put the mono signal on both stereo channels of the TRS jack.
For the first draft, we're using one LM386 audio power amplifier even though it has a quite high minimal amplification of factor 20.
#### VU Meter
### VU Meter
When searching for VU meter circuits, many use the LM3916 LED bar graph driver, which already has the right scaling built in.
But this chip is obsolete and not produced any more, so we designed our own chain of comperators to drive a set of LEDs.
#### User Interface Hardware
For the potentiometers, we first wanted to use ones with a conductive plastic resistor element for maximum longevity from Bourns, but these are hard to find with logarithmic scaling.
An affordable and easily obtainable (Reichelt) alternative was found in the Alps RK11K and RK14K series.
They are available in linear and logarithmic scale, as well as single (mono) and dual (stereo) units and have a nice feeling.
Another potentiometer from Omeg was tried, but it had a "jump" in the resistor value at some knob positions.
TODO: On-Air button
## User Interface
The user interface should enable the interpereters to adjust their microphone gain and headphone mix on their own.
Additionally, a (permanent) on/off switch, as well as a (temporary) mute button should be present.
A possible UI layout might look like this: ![](docs/ui-layout.jpg)
### Potentiometers
We need some single and dual channel logarithmic scale potentiometers, which are matching in size, for:
- top plate interface (all vertical style, threaded collar would be nice):
* 1 single channel for the input gain (resistance doesn't matter)
* 2 single and 1 stereo channel for the headphone mix (ideally 50K, b/c 3 will be in parallel)
- front plate next to the headset jacks (horizontal style, threaded collar not needed):
* 1 single channel for the headphone volume (ideally 50K, b/c that's already tested)
Possible knobs may be:
- (A) Re'an F311/ F313 series (11/ 13 mm diameter) -- 0.40 €/ 0.55 €:
Boring: 9.0 mm D-style hole + 0.0 mm nut cover section = 9.0 mm
- (B) Re'an P670 series (12 mm diameter/ 16 mm at bottom) (alt. Davies Molding 1101) -- 0.78 €:
Boring: 7.5 mm D-style hole + 4.5 mm nut cover section = 12.0 mm
Nut cover: 12.9 mm diameter (M7 nut is 12.5 mm corner to corner)
- (C) Re'an P300 series (11 mm diameter/ 15 mm at bottom):
Boring: 9.0 mm D-style hole + 3.0 mm nut cover section = 12.0 mm
Nut cover: ? mm diameter (M7 nut is 12.5 mm corner to corner)
- ~~(D) Cliff K87MAR series/ RS Pro 777-73xx: 7.5 mm hole depth + 4.5 mm skirt = 12 mm, inner size of skirt 12 mm (measured)~~
~~Notes: D-style boring has wrong size (5 mm instead of 4.5 mm flatted)~~
Potentiometers from Alps Alpine seem to have a decent quality in a small package size and quite affordable price.
From their lineup, the RK09K/D, RK11/12/14, RK09L and RK097 series are left considering our requirements (mouser prices without VAT, shortlist marked bold):
- Alps Alpine Series RK09K/D (6 mm D-style (4.5 mm) shaft):
* vertical (top plate):
+ **single channel: 10K, 15 mm -- RK09K1130AJ3 -- 0.91 €**
actual shaft length (dwg. 2): 7.4 mm (6 mm flattened)
_matching knobs: A_
+ dual channel: 10K, 15 mm -- RK09K12C0A19 -- 1.23 €
actual shaft length (dwg. 10): 7.4 mm (6 mm flattened)
_matching knobs: A_
+ **dual channel: 50K, 20 mm -- RK09K12C0A2S -- 1.44 €**
actual shaft length (dwg. 10): 12.4 mm (7 mm flattened)
_matching knobs: C, B (depending on front plate thickness)_
* horizontal (front plate):
* single channel: 10K, 15 mm -- RK09K1110A2S -- 0.67 €
actual shaft length (dwg. 1): 7.4 mm (6 mm flattened)
_matching knobs: A_
* **single channel: 50K, 15 mm -- RK09K1110B1R -- 0.67 €**
actual shaft length (dwg. 6): 7.4 mm (6 mm flattened)
_matching knobs: A_
- Alps Alpine Series RK09L (6 mm D-style (4.5 mm) shaft, collar with M7 thread):
* vertical (top plate):
+ **single channel: 10K, 12.5 mm -- RK09L1140A5E -- 1.61 €**
actual shaft length (dwg. 2): 7.5 mm (7 mm flattened) + 5 mm thread length
_matching knobs: A_
+ **dual channel: 10K, 15 mm -- RK09L12D0A1W -- 1.64 €**
actual shaft length (dwg. 4): 10 mm (7 mm flattened) + 7 mm thread length
_matching knobs: C, B (depending on front plate thickness)_
+ dual channel: 10K, 20 mm -- RK09L12D0A1T -- 1.64 €
actual shaft length (dwg. 4): 15 mm (12 mm flattened) + 7 mm thread length
_matching knobs: Unknown, b/c of quite long shaft_
* horizontal (front plate):
+ **single channel: 10K, 15 mm -- RK09L1120A2S -- 1.62 €**
actual shaft length (dwg. 1): 10 mm (7 mm flattened) + 5 mm thread length
_matching knobs: C, B (depending on front plate thickness)_
+ single channel: 10K, 20 mm -- RK09L1120A69 -- 1.30 €
actual shaft length (dwg. 1): 15 mm (12 mm flattened) + 7 mm thread length
_matching knobs: Unknown, b/c of quite long shaft_
+ dual channel: 50K, 15 mm -- RK09L12B0A31 -- 1.78 €
actual shaft length (dwg. 3): 10 mm (7 mm flattened) + 5 mm thread length
_matching knobs: C, B (depending on front plate thickness)_
- ~~Alps Alpine Series RK11K/12L/14K~~: no suitable options
- ~~Alps Alpine Series RK097 (6 mm D-style (4.5 mm) shaft, collar with M7 thread)~~: Only horizontal style and quite expensive (2.16 €/ 2.96 €)
**Selection**:
- Input gain:
* RK09K1130AJ3 (single, 10K, 15 mm) + Re'an F311/ F313 (diameter TBD)
* or RK09K12C0A2S (dual, 50K, 20 mm) + Re'an P670 or similar
- Headphone mix:
* RK09K12C0A2S (dual, 50K, 20 mm) + Re'an P670
- Headphone volume:
* RK09K1110B1R (single, 50K, 15 mm) + Re'an F311/ F313 (diameter TBD)
### Switches
The **On-Air** button needs to be a latching DPDT switch, ideally with LED illumination and max. 8 mm height (PCB to front plate), like:
- E-Switch TL2230EEF140, no illumination -- 0.60 €
DPDT, PCB mount
Height: 7.0 mm + 5.5 mm plunger (2x3 mm cap terminal)
Cap: see APEM models
- **APEM MHPS2273 (EU version: PHAP4673), no illumination, no audible click -- 0.41 €**
DPDT, PCB mount
Height: 7.0 mm + 5.5 mm plunger (2x3 mm cap terminal)
Cap: U542x (11.5 mm square, 4 mm height), **U453x (9.4 mm dia., 6.65 mm height) -- 0.64 €**
Cap color codes: **2 Black**, 4 Grey, 5 Yellow, 6 Red
The **mute** button needs to be a momentary SPST (normally open) or SPDT push button, like:
- E-Switch TL2230OAF140, no illumination -- 0.53 €
DPDT, PCB mount
Height: 7.0 mm + 5.5 mm plunger (2x3 mm cap terminal)
Cap: see APEM models
- **APEM 1413NC6/ 1415NC6 -- 3.72 €**
SPST/ SPDT, front plate snap-in mount, solder lugs
Button size: 12 mm square, Color: Red (color code 6)
Cap: U542x (11.5 mm square, 4 mm height), **U453x (9.4 mm dia., 6.65 mm height) -- 0.64 €**
Cap color codes: 2 Black, 4 Grey, 5 Yellow, 6 Red
Depth: 13 mm + 6 mm for contacts = 19 mm
- NKK Switches LP0115C{C,M}KW01-C -- 7.91 €
SPDT, front plate bushing/ snap-in mount, solder lugs
Button size: 13.6 mm dia., Color: Red (color code C)
Depth: 22 mm
### Casing
The casing should be a desk console (angled surface), ideally with space at the front to mount the headset ports (XLR and 6.3 mm jack), like:
- [Bopla ATPH 1865-0250](https://www.bopla.de/gehaeusetechnik/product/alu-topline/alu-topline-gehaeuse/atph-1865-0250.html) (front might not have enough space for the connectors)
- Design our own casing to laser cut/ 3D print
## Notes
@ -133,56 +250,61 @@ Approximate prices in Euro.
Connectors and Buttons (User Interface)
| Count | Art. No. | Description | Price |
|-------|---------------------|---------------------|-------|
| 1 | Neutrik NAC3 MPA-1 | Main Power Input | 3,33 |
| 1 | Neutrik NCJ 6 FAH | Line Input | 1,27 |
| 1 | Neutrik NC3 MD-LX | Line Output | 3,22 |
| 1 | | | TODO |
| 3x1 | Neutrik NC3 FD-LX | Microphone Input | 3,44 |
| 3x1 | Neutrik NJ3 FP-6-C | Headphone Output | 5,40 |
| 3x1 | TODO | Mute Button | TODO |
| 3x1 | TODO | On-Air Button | TODO |
| 3x4 | Alps RK11K1120-A503 | 50K log. Gain/ Vol. | 1,32 |
| 3x1 | Alps RK14K12B0A0R | 50K log. Vol. (st.) | 1,50 |
| 1 | Vishay M64{Y,Z}104 | 100K Trim Pot. | 0,95 |
| Count | Manufacturer + Art. No. | Description | €/ pc.|
|-------|--------------------------|----------------------------------|-------|
| 1 | Neutrik NAC3 MPA-1 | Mains Power Input | 3.33 |
| 1 | Neutrik NCJ 6 FAH | Line Input | 1.27 |
| 1 | Neutrik NC3 MAAH | Line Output | 0.92 |
| 3x1 | Neutrik NCJ 6 FAH | Headset Microphone Input | 1.27 |
| 3x1 | Rean NYS 216 G | Headphone Output | 0.93 |
| 3x1 | APEM 1415NC6 | Mute Button (red cap, snap-in) | 3.72 |
| 3x1 | APEM MHPS2273 | On-Air Button | 0.41 |
| 3x1 | APEM U4532 | On-Air Button black cap | 0.64 |
| 3x1 | Alps RK09K1130AJ3 | 10K log Mono Pot. (Gain) | 0.91 |
| 3x1 | Re'an F311 | Potentiometer Knob | 0.40 |
| 3x3 | Alps RK09K12C0A2S | 50K log Dual Pot. (Headset Mix) | 1.44 |
| 3x3 | Re'an P670 | Potentiometer Knob | 0.78 |
| 3x1 | Alps RK09K1110B1R | 50K log Mono Pot. (Headset Vol.) | 0.67 |
| 3x1 | Re'an F311 | Potentiometer Knob | 0.40 |
| 1 | Vishay M64{Y,Z}104 | 100K Trim Pot. | 0.95 |
| | | **SUM** | 54.50 |
Sub-Components
| Count | Art. No. | Description | Price |
|-------|---------------------|---------------------|-------|
| 1 | Traco Power TXL 035-1515D or TOP 60533 | Power Supply | ~48,00 |
| Count | Manufacturer + Art. No. | Description | €/ pc.|
|-------|--------------------------|----------------------------------|-------|
| 1 | Traco Power TXL 035-1515D or TOP 60533 | Power Supply | ~48.00 |
PCB Components: TODO when schematic is finished
| Count | Art. No. | Description | Price |
|-------|---------------------|---------------------|-------|
| 3 | NE5534 | Low-noise Op-Amp | 0,54 |
| 8 | LM833 | Generic Op-Amp | 0,88 |
| 3 | LM386N-4 | Audio Power Amp | 0,83 |
| 1 | DRV143 | Line Driver | 4,50 |
| Count | Manufacturer + Art. No. | Description | €/ pc.|
|-------|--------------------------|----------------------------------|-------|
| 3 | NE5534 | Low-noise Op-Amp | 0.54 |
| 8 | LM833 | Generic Op-Amp | 0.88 |
| 3 | LM386N-4 | Audio Power Amp | 0.83 |
| 1 | DRV143 | Line Driver | 4.50 |
| TODO | TODO | El. Capacitor | TODO |
| TODO | TODO | Cer. Capacitor | TODO |
| TODO | TODO | Resistor | TODO |
| | | **SUM** | TODO |
VU Meter Components
| Count | Art. No. | Description | Price |
| Count | Art. No. | Description | €/ pc.|
|-------|---------------------|---------------------|-------|
| 1 | Vishay M64{Y,Z}104 | 50K Trim Pot. | 0,95 |
| 1 | LM833 | Generic Op-Amp | 0,88 |
| 2 | 1N4148 | Signal Diode | 0,02 |
| 1 | Vishay M64{Y,Z}503 | 50K Trim Pot. | 0.95 |
| 1 | LM833 | Generic Op-Amp | 0.88 |
| 2 | 1N4148 | Signal Diode | 0.02 |
| 1 | 1k Metal Film | Resistor | TODO |
| 1 | 3.9k Metal Film | Resistor | TODO |
| 1 | 47 uF | El. Capacitor | TODO |
| 1 | 100k Metal Film | Resistor | TODO |
| 3 | LM339 | Quad-Ch. Comperator | 0,29 |
| 3 | LM339 | Quad-Ch. Comperator | 0.29 |
| 5 | 100 nF | Cer. Capacitor | TODO |
| 1 | 1 uF | El. Capacitor | TODO |
| 5 | Vishay TLHR 5404 | LED red | 0,18 |
| 4 | Vishay TLHY 5404 | LED yellow | 0,14 |
| 3 | Vishay TLHG 5404 | LED green | 0,17 |
| 5 | Vishay TLHR 5404 | LED red | 0.18 |
| 4 | Vishay TLHY 5404 | LED yellow | 0.14 |
| 3 | Vishay TLHG 5404 | LED green | 0.17 |
| 12 | 390R | Resistor | TODO |
| 1 | 39R | Resistor | TODO |
| 2 | 68R | Resistor | TODO |
@ -195,3 +317,4 @@ VU Meter Components
| 1 | 1.5K | Resistor | TODO |
| 2 | 2.7K | Resistor | TODO |
| 1 | 3.9K | Resistor | TODO |
| | | **SUM** | TODO |

BIN
c3lingo-interpreter-unit.pdf Normal file
View file

Binary file not shown.

BIN
c3lingo-mixer.pdf
View file

Binary file not shown.

BIN
docs/ui-layout.jpg Normal file
View file

Binary file not shown.
Side by side

After

Width:  |  Height:  |  Size: 118 KiB

BIN
docs/ui-layout.odg Normal file
View file

Binary file not shown.

BIN
docs/ui-layout.pdf Normal file
View file

Binary file not shown.

35
schematics/mixer/c3lingo-interpreter-unit-cache.lib
View file

@ -255,6 +255,28 @@ X ~ 2 0 -150 110 U 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_D
#
DEF Device_D D 0 40 N N 1 F N
F0 "D" 0 100 50 H V C CNN
F1 "Device_D" 0 -100 50 H V C CNN
F2 "" 0 0 50 H I C CNN
F3 "" 0 0 50 H I C CNN
$FPLIST
TO-???*
*_Diode_*
*SingleDiode*
D_*
$ENDFPLIST
DRAW
P 2 0 1 10 -50 50 -50 -50 N
P 2 0 1 0 50 0 -50 0 N
P 4 0 1 10 50 50 50 -50 -50 0 50 50 N
X K 1 -150 0 100 R 50 50 1 1 P
X A 2 150 0 100 L 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_R
#
DEF Device_R R 0 0 N Y 1 F N
@ -430,19 +452,16 @@ X -15V 1 0 0 0 U 50 50 0 0 W N
ENDDRAW
ENDDEF
#
# power_GNDREF
# power_GND
#
DEF power_GNDREF #PWR 0 0 Y Y 1 F P
DEF power_GND #PWR 0 0 Y Y 1 F P
F0 "#PWR" 0 -250 50 H I C CNN
F1 "power_GNDREF" 0 -150 50 H V C CNN
F1 "power_GND" 0 -150 50 H V C CNN
F2 "" 0 0 50 H I C CNN
F3 "" 0 0 50 H I C CNN
DRAW
P 2 0 1 0 -25 -75 25 -75 N
P 2 0 1 0 -5 -100 5 -100 N
P 2 0 1 0 0 -50 0 0 N
P 2 0 1 0 50 -50 -50 -50 N
X GNDREF 1 0 0 0 D 50 50 1 1 W N
P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
X GND 1 0 0 0 D 50 50 1 1 W N
ENDDRAW
ENDDEF
#

6858
schematics/mixer/c3lingo-interpreter-unit.kicad_pcb
View file

File diff suppressed because it is too large Load diff

983
schematics/mixer/c3lingo-interpreter-unit.sch
View file

File diff suppressed because it is too large Load diff

2160
schematics/vu_meter/vu_meter.kicad_pcb
View file

File diff suppressed because it is too large Load diff

52
schematics/vu_meter/vu_meter.sch
View file

@ -903,13 +903,13 @@ F 3 "https://www.ti.com/lit/ds/symlink/lm339.pdf" H 1250 5100 50 0001 C CNN
0 -1 -1 0
$EndComp
$Comp
L power:GNDREF #PWR017
L power:GND #PWR017
U 1 1 5FD55EE5
P 4600 9650
AR Path="/5FD55EE5" Ref="#PWR017" Part="1"
AR Path="/5FA7BAE6/5FD55EE5" Ref="#PWR041" Part="1"
F 0 "#PWR017" H 4600 9400 50 0001 C CNN
F 1 "GNDREF" H 4605 9477 50 0000 C CNN
F 1 "GND" H 4605 9477 50 0000 C CNN
F 2 "" H 4600 9650 50 0001 C CNN
F 3 "" H 4600 9650 50 0001 C CNN
1 4600 9650
@ -991,13 +991,13 @@ F 3 "~" H 2050 7250 50 0001 C CNN
-1 0 0 1
$EndComp
$Comp
L power:GNDREF #PWR018
L power:GND #PWR018
U 1 1 5FCB34D1
P 1450 7500
AR Path="/5FCB34D1" Ref="#PWR018" Part="1"
AR Path="/5FA7BAE6/5FCB34D1" Ref="#PWR042" Part="1"
F 0 "#PWR018" H 1450 7250 50 0001 C CNN
F 1 "GNDREF" H 1455 7327 50 0000 C CNN
F 1 "GND" H 1455 7327 50 0000 C CNN
F 2 "" H 1450 7500 50 0001 C CNN
F 3 "" H 1450 7500 50 0001 C CNN
1 1450 7500
@ -1072,13 +1072,13 @@ $EndComp
Wire Wire Line
3200 8350 3300 8350
$Comp
L power:GNDREF #PWR015
L power:GND #PWR015
U 1 1 5FCB351D
P 2500 8550
AR Path="/5FCB351D" Ref="#PWR015" Part="1"
AR Path="/5FA7BAE6/5FCB351D" Ref="#PWR040" Part="1"
F 0 "#PWR015" H 2500 8300 50 0001 C CNN
F 1 "GNDREF" H 2505 8377 50 0000 C CNN
F 1 "GND" H 2505 8377 50 0000 C CNN
F 2 "" H 2500 8550 50 0001 C CNN
F 3 "" H 2500 8550 50 0001 C CNN
1 2500 8550
@ -1138,13 +1138,13 @@ Wire Wire Line
Wire Wire Line
1500 8250 1600 8250
$Comp
L power:GNDREF #PWR014
L power:GND #PWR014
U 1 1 5FFA8E8D
P 1350 8500
AR Path="/5FFA8E8D" Ref="#PWR014" Part="1"
AR Path="/5FA7BAE6/5FFA8E8D" Ref="#PWR039" Part="1"
F 0 "#PWR014" H 1350 8250 50 0001 C CNN
F 1 "GNDREF" H 1355 8327 50 0000 C CNN
F 1 "GND" H 1355 8327 50 0000 C CNN
F 2 "" H 1350 8500 50 0001 C CNN
F 3 "" H 1350 8500 50 0001 C CNN
1 1350 8500
@ -1207,11 +1207,11 @@ F 3 "" H 900 1900 50 0001 C CNN
1 0 0 -1
$EndComp
$Comp
L power:GNDREF #PWR06
L power:GND #PWR06
U 1 1 5FB1F99A
P 900 2400
F 0 "#PWR06" H 900 2150 50 0001 C CNN
F 1 "GNDREF" H 905 2227 50 0000 C CNN
F 1 "GND" H 905 2227 50 0000 C CNN
F 2 "" H 900 2400 50 0001 C CNN
F 3 "" H 900 2400 50 0001 C CNN
1 900 2400
@ -1232,11 +1232,11 @@ Wire Wire Line
7150 750 7150 1300
Connection ~ 7150 1300
$Comp
L power:GNDREF #PWR07
L power:GND #PWR07
U 1 1 5FB7DBA4
P 1500 2400
F 0 "#PWR07" H 1500 2150 50 0001 C CNN
F 1 "GNDREF" H 1505 2227 50 0000 C CNN
F 1 "GND" H 1505 2227 50 0000 C CNN
F 2 "" H 1500 2400 50 0001 C CNN
F 3 "" H 1500 2400 50 0001 C CNN
1 1500 2400
@ -1261,22 +1261,22 @@ F 3 "~" H 900 3750 50 0001 C CNN
1 0 0 -1
$EndComp
$Comp
L power:GNDREF #PWR08
L power:GND #PWR08
U 1 1 5FBCBBA0
P 900 3900
F 0 "#PWR08" H 900 3650 50 0001 C CNN
F 1 "GNDREF" H 905 3727 50 0000 C CNN
F 1 "GND" H 905 3727 50 0000 C CNN
F 2 "" H 900 3900 50 0001 C CNN
F 3 "" H 900 3900 50 0001 C CNN
1 900 3900
1 0 0 -1
$EndComp
$Comp
L power:GNDREF #PWR09
L power:GND #PWR09
U 1 1 5FBCBBA6
P 1500 3900
F 0 "#PWR09" H 1500 3650 50 0001 C CNN
F 1 "GNDREF" H 1505 3727 50 0000 C CNN
F 1 "GND" H 1505 3727 50 0000 C CNN
F 2 "" H 1500 3900 50 0001 C CNN
F 3 "" H 1500 3900 50 0001 C CNN
1 1500 3900
@ -1338,22 +1338,22 @@ F 3 "~" H 900 5250 50 0001 C CNN
1 0 0 -1
$EndComp
$Comp
L power:GNDREF #PWR010
L power:GND #PWR010
U 1 1 5FC56406
P 900 5400
F 0 "#PWR010" H 900 5150 50 0001 C CNN
F 1 "GNDREF" H 905 5227 50 0000 C CNN
F 1 "GND" H 905 5227 50 0000 C CNN
F 2 "" H 900 5400 50 0001 C CNN
F 3 "" H 900 5400 50 0001 C CNN
1 900 5400
1 0 0 -1
$EndComp
$Comp
L power:GNDREF #PWR011
L power:GND #PWR011
U 1 1 5FC5640C
P 1500 5400
F 0 "#PWR011" H 1500 5150 50 0001 C CNN
F 1 "GNDREF" H 1505 5227 50 0000 C CNN
F 1 "GND" H 1505 5227 50 0000 C CNN
F 2 "" H 1500 5400 50 0001 C CNN
F 3 "" H 1500 5400 50 0001 C CNN
1 1500 5400
@ -1381,26 +1381,26 @@ Wire Wire Line
900 3400 900 3500
Connection ~ 900 3500
$Comp
L power:GNDREF #PWR0101
L power:GND #PWR0101
U 1 1 5FCA9B50
P 5000 8750
AR Path="/5FCA9B50" Ref="#PWR0101" Part="1"
AR Path="/5FA7BAE6/5FCA9B50" Ref="#PWR?" Part="1"
F 0 "#PWR0101" H 5000 8500 50 0001 C CNN
F 1 "GNDREF" H 5005 8577 50 0000 C CNN
F 1 "GND" H 5005 8577 50 0000 C CNN
F 2 "" H 5000 8750 50 0001 C CNN
F 3 "" H 5000 8750 50 0001 C CNN
1 5000 8750
1 0 0 -1
$EndComp
$Comp
L power:GNDREF #PWR0102
L power:GND #PWR0102
U 1 1 5FCEE917
P 2050 7500
AR Path="/5FCEE917" Ref="#PWR0102" Part="1"
AR Path="/5FA7BAE6/5FCEE917" Ref="#PWR?" Part="1"
F 0 "#PWR0102" H 2050 7250 50 0001 C CNN
F 1 "GNDREF" H 2055 7327 50 0000 C CNN
F 1 "GND" H 2055 7327 50 0000 C CNN
F 2 "" H 2050 7500 50 0001 C CNN
F 3 "" H 2050 7500 50 0001 C CNN
1 2050 7500
@ -1493,11 +1493,11 @@ Wire Wire Line
Text Notes 6050 900 0 50 ~ 0
TODO: Better use 5V?\nrd: 2.3 V (390R @15V)\ngn: 2.4 V (390R @15V)\nye: 2.6 V (390R @15V)
$Comp
L power:GNDREF #PWR013
L power:GND #PWR013
U 1 1 5FABEB24
P 1600 1200
F 0 "#PWR013" H 1600 950 50 0001 C CNN
F 1 "GNDREF" H 1605 1027 50 0000 C CNN
F 1 "GND" H 1605 1027 50 0000 C CNN
F 2 "" H 1600 1200 50 0001 C CNN
F 3 "" H 1600 1200 50 0001 C CNN
1 1600 1200

BIN
vu_meter.pdf
View file

Binary file not shown.