MiniADSR 1.1
About the MiniADSR 1.1 PCB
MiniADSR 1.1 is an open source PCB design by benjiaomodular, published on GitHub under the MIT license. It is a 2-layer board measuring 20 × 128.5 mm, with 43 components from 25 distinct parts.
Other key parts include the LM555CN/NOPB and TL072BCP. By type, the board carries 12 resistors, 8 capacitors, 7 diodes, 6 connectors, 3 transistors and 2 ICs.
It belongs with the audio designs in this gallery.
From the project
A 4HP envelope generator for Eurorack modular synth
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/
Main components on the MiniADSR 1.1
MiniADSR 1.1 bill of materials (BOM)
43 components, 25 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM555CN/NOPB LM555xN | DIP-8_W7.62mm | U1 |
| 1 | TL072BCP TL072 | DIP-8_W7.62mm | U2 |
| 3 | BC547CTFR BC547 | TO-92_Inline_Wide | Q1, Q2, Q3 |
| 1 | INPUT | AudioJack_3.5mm | J1 |
| 1 | OUTPUT | AudioJack_3.5mm | J2 |
| 1 | JST_BUS | JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J3 |
| 1 | ControlBoard_Pins | PinSocket_1x14_P2.54mm_Vertical | J4 |
| 1 | IDC_BUS | IDC-Header_2x05_P2.54mm_Vertical | J5 |
| 1 | MainBoard_Pins | PinHeader_1x14_P2.54mm_Vertical | J6 |
| 3 | 1M | Potentiometer_RV09 | POT_ATTACK1, POT_DECAY1, POT_RELEASE1 |
| 1 | 10k | Potentiometer_RV09 | POT_SUSTAIN1 |
| 1 | SW_DIP_x01 | ToggleSwitch_MTS-101_SPST | SW1 |
| 5 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5 |
| 1 | PWR_LED | LED_D3.0mm | D6 |
| 1 | OUTPUT_LED | LED_D3.0mm | D7 |
| 1 | MMK5103K50J01L4BULK 10nF | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1 |
| 1 | UVR1E100MDD1TD 10uF | CP_Radial_D5.0mm_P2.50mm | C2 |
| 1 | ESC105M050AC3AA 4.7uF* | CP_Radial_D5.0mm_P2.50mm | C3 |
| 2 | ESH107M010AC3AA 100uF | CP_Radial_D5.0mm_P2.50mm | C4, C5 |
| 2 | R82DC3100AA50K 100nF | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C6, C7 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 470nF | Capacitor_Rect_L7.2mm_W2.5mm_P5.00mm | C8 |
| 4 | MF1/4DC1002F 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R5, R11, R12 |
| 4 | MFR-25FTE52-4K7 4.7k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R4, R6, R9 |
| 1 | MF1/4DCT52R2202F 22k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 3 | MFR-25FTE52-100R 100 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8, R10 |
MiniADSR 1.1 design files
The KiCad project lives in the benjiaomodular/MiniADSR repository on GitHub; these links point at the commit this page was built from.
MiniADSR 1.1: common questions
How big is the MiniADSR 1.1 PCB?
The MiniADSR 1.1 measures 20 × 128.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MiniADSR 1.1?
43 components, from 25 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the MiniADSR 1.1 design files?
From the benjiaomodular/MiniADSR repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the MiniADSR 1.1 design in my own project?
Yes, under the terms of its MIT license, which benjiaomodular chose for the repository.
More boards in MiniADSR
MiniADSR 1.0.1
20 × 128.5 mm41 parts2LMIT21
MiniADSR 1.0 - Main Board
20 × 102.5 mm30 parts2LMIT21
MiniADSR 1.0.1 - Main
20 × 102.5 mm30 parts2LMIT21
MiniADSR 1.1 - Main Board
20 × 102.5 mm30 parts2LMIT21
MiniADSR 1.0 - Control Panel
20 × 102.5 mm11 parts2LMIT21
MiniADSR 1.0.1 - Control
20 × 102.5 mm11 parts2LMIT21
MiniADSR 1.1 - Control Board
20 × 102.5 mm11 parts2LMIT21
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