2 layers105 × 128.5 mm
MiniADSR 1.0.1
benjiaomodular/MiniADSR
A 4HP envelope generator for Eurorack modular synth
50 parts21MIT
2 layers105 × 128.5 mm
MiniADSR 1.1
benjiaomodular/MiniADSR21A 4HP envelope generator for Eurorack modular synth
- Size
- 105 × 128.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 42
- Pads
- 157
- Tracks, vias
- 226, 9
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Jan 2022
- Updated
- 19 Feb 2022
Overview
MiniADSR 1.1 is an open-source printed circuit board by benjiaomodular, from the benjiaomodular/MiniADSR repository on GitHub, published under the MIT licence. It is a 2-layer board of 105 × 128.5 mm with 52 parts on 42 nets, routed with 226 tracks and 9 vias.
It is built around the TL072 and BC547. Its parts include 12 resistors, 8 capacitors, 7 diodes, 6 connectors and 3 transistors. It belongs with the audio and music boards of this library.
Main components
2README
README.mdMiniADSR
A four-parameter envelope generator based on Rene Schmitz' The Fastest Envelope in the West. More info on my website: https://benjiaomodular.com/post/2022-02-02-mini-adsr/
Versions
1.0.1
Quick fixes for v1.0
- Fixed connection of R7 to Q2 pin 1
- Updated C2 value to 10uF
- Change sustain pot from 1M to 10k
- C3 from 100uF to 1uF
- Added version numbers
- Flipped power connectors 180deg to accomodate larger IDC connectors.
1.0
Initial design.
Issues
- Wrong connection from R7
- Wrong value for C3 and Sustain pot
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5 |
| 4 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R5, R11, R12 |
| 4 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R4, R6, R9 |
| 3 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8, R10 |
| 3 | 1M | benjiaomodular:Potentiometer_RV09 | POT_ATTACK1, POT_DECAY1, POT_RELEASE1 |
| 3 | BC547 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q2, Q3 |
| 2 | 100nF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C6, C7 |
| 2 | 100uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C4, C5 |
| 1 | 10k | benjiaomodular:Potentiometer_RV09 | POT_SUSTAIN1 |
| 1 | 10nF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C2 |
| 1 | 22k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 4.7uF* | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 470nF | benjiaomodular:Capacitor_Rect_L7.2mm_W2.5mm_P5.00mm | C8 |
| 1 | ControlBoard_Pins | Connector_PinSocket_2.54mm:PinSocket_1x14_P2.54mm_Vertical | J4 |
| 1 | IDC_BUS | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J5 |
| 1 | INPUT | benjiaomodular:AudioJack_3.5mm | J1 |
| 1 | JST_BUS | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J3 |
| 1 | LM555xN | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | MainBoard_Pins | Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical | J6 |
| 1 | OUTPUT | benjiaomodular:AudioJack_3.5mm | J2 |
| 1 | OUTPUT_LED | LED_THT:LED_D3.0mm | D7 |
| 1 | PWR_LED | LED_THT:LED_D3.0mm | D6 |
| 1 | SW_DIP_x01 | benjiaomodular:ToggleSwitch_MTS-101_SPST | SW1 |
| 1 | TL072 | Package_DIP:DIP-8_W7.62mm | U2 |
The 43 most common of 52 parts.
More from benjiaomodular/MiniADSR
5- 2 layers20 × 102.5 mm
MiniADSR 1.0.1 - Main
benjiaomodular/MiniADSR
A 4HP envelope generator for Eurorack modular synth
31 parts21MIT - 2 layers20 × 102.5 mm
MiniADSR 1.0 - Main Board
benjiaomodular/MiniADSR
A 4HP envelope generator for Eurorack modular synth
31 parts21MIT - 2 layers20 × 102.5 mm
MiniADSR 1.1 - Main Board
benjiaomodular/MiniADSR
A 4HP envelope generator for Eurorack modular synth
31 parts21MIT - 2 layers20 × 102.5 mm
MiniADSR 1.0.1 - Control
benjiaomodular/MiniADSR
A 4HP envelope generator for Eurorack modular synth
12 parts21MIT
Similar boards
- 2 layers135.8 × 128.4 mm
- 2 layers76 × 100 mm
Vclfo10
EchelonForce/vclfo10
A Eurorack LFO design based on the Electric Druid VCLFO10 chip.
139 parts7 - 2 layers67 × 100 mm
Lfo stomp v1 panelized
EchelonForce/lfo_stomp
A design for a Eurorack LFO module based on the ElectricDruid STOMPLFO chip.
100 parts5 - 2 layers245.4 × 128.5 mm
- 2 layers30.5 × 99.1 mm
- 2 layers38 × 100 mm
Vca as3360-circuit
fledsbo/Modules
Eurorack module designs using KiCad — VCO, VCF, VCA, ADSR, and Daisy Seed
74 parts3 - 2 layers167.8 × 146.7 mm
- 2 layers30.2 × 109.2 mm
Questions
How big is the MiniADSR 1.1 PCB?
It measures 105 × 128.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MiniADSR 1.1 use?
52 parts, built around the TL072 and BC547. 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 MiniADSR 1.1 KiCad files?
From the benjiaomodular/MiniADSR repository on GitHub, at the commit this page was made from: the board is KiCAD/MiniADSR - Simplified/MiniADSR 1.1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MiniADSR 1.1 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).