2 layers148 × 84.5 mm
Panel daisy
ohmtech-rdi/eurorack-blocks
Software to Hardware Prototyping for Eurorack using C++, Max/Gen~ or Faust
259 parts410
2 layers65 × 75 mm
Vca adsr
polykit/vca-adsr9VCA and ADSR schematics and PCB layout
- Size
- 65 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 45
- Pads
- 162
- Tracks, vias
- 227, 4
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 12 Feb 2021
- Updated
- 18 Jun 2021
Overview
Vca adsr is an open-source printed circuit board by polykit, from the polykit/vca-adsr repository on GitHub. It is a 2-layer board of 65 × 75 mm with 84 parts on 45 nets, routed with 227 tracks and 4 vias.
It is built around the TL072. Its parts include 28 resistors, 8 capacitors, 6 diodes, 3 ICs and 3 transistors.
Main components
1README
README.mdPolykit VCA-ADSR
This repository contains schematics and PCB layout for a board with a VCA and an ADSR on it.
Schematics
VCA
ADSR
References
https://www.schmitzbits.de/adsr.html
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | LOGO | Polykit:blitz-silk-supertiny | G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** |
| 7 | LOGO | Polykit:star-silk-tiny | G***, G***, G***, G***, G***, G***, G*** |
| 6 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R18, R20, R21, R22, R23 |
| 6 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 6 | Conn_01x02 | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | ADSR_IN1, ADSR_OUT1, ATTACK_POT1, DECAY_POT1, RELEASE_POT1, VCA_OUT1 |
| 3 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R11, R12 |
| 3 | 100n | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C6, C7, C8 |
| 3 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R15, R26 |
| 3 | 22k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R16, R17, R19 |
| 3 | 2N3904 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1*1, Q2*1, Q3 |
| 2 | 10 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8 |
| 2 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R9 |
| 2 | 10n | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2 |
| 2 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C4, C5 |
| 2 | 150k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R24, R25 |
| 2 | Conn_01x01 | Connector_Pin:Pin_D0.7mm_L6.5mm_W1.8mm_FlatFork | MOD_ADSR_OUT1, MOD_VCA_IN1 |
| 1 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R4 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R28 |
| 1 | 100k | Potentiometer_THT:Potentiometer_ACP_CA9-H5_Horizontal | LEVEL_TRIM1 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R27 |
| 1 | 1k | Potentiometer_THT:Potentiometer_ACP_CA9-H5_Horizontal | OFFSET_TRIM1 |
| 1 | 220k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R13 |
| 1 | 4.7u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R5 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R14 |
| 1 | 4k7 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 7555 | Package_DIP:DIP-8_W7.62mm_LongPads | U2 |
| 1 | Conn_01x02 | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | SUSTAIN_POT1 |
| 1 | Conn_01x04 | Connector_Molex:Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical | VCA_IN1 |
| 1 | Conn_02x05_Odd_Even | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | POWER1 |
| 1 | LOGO | Polykit:logo-silk-2.5cm | G*** |
| 1 | LOGO | Polykit:bär-small | G*** |
| 1 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | DIRECT |
| 1 | TL072 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U3 |
| 1 | TL074 | Package_DIP:DIP-14_W7.62mm_LongPads | U1 |
Questions
How big is the Vca adsr PCB?
It measures 65 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Vca adsr use?
84 parts, built around the TL072. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Vca adsr KiCad files?
From the polykit/vca-adsr repository on GitHub, at the commit this page was made from: the board is vca-adsr.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Vca adsr design in my own project?
Its repository states no licence, so its author keeps all rights: ask polykit before reusing the design.
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