ADSR
About the ADSR PCB
ADSR is an open source PCB design by telec16, published on GitHub. It is a 2-layer board measuring 25 × 200 mm, with 49 components from 21 distinct parts.
Other key parts include the LM741. By type, the board carries 18 resistors, 12 diodes, 5 ICs, 4 transistors, 4 connectors and 2 capacitors.
It belongs with the audio designs in this gallery.
From the project
~~Little side project, don't expect much updates.~~
~~Little side project, don't expect much updates.~~
VCO - 3340 - Schmitt inverter - Opamp V1 - Opamp V2 LFO - Hex Inverter Sequencer - µC - random jazz generator Random generator - zener - µC ADSR - Opamp VCA - LM13700 - Vactrol Quantizer (CV correction) - µC VCF - ? Drum kit - ??? Frequency multiplier/divider - CD4046 PLL V1 - CD4046 PLL V2 Wavefolder - Bipolar - Opamp CV Glider - RC circuit * Scope - µC
Main components on the ADSR
ADSR bill of materials (BOM)
49 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | LM741 | DIP-8_W7.62mm_LongPads | U1, U2, U3, U4, U5 |
| 1 | BC557 | TO-92_Inline_Wide | Q1 |
| 3 | BC547 | TO-92_Inline_Wide | Q2, Q3, Q4 |
| 1 | EuroPower | EuroPower | J1 |
| 1 | GATE | Jack_Hole_Square | J2 |
| 1 | Hard Envelope | PinSocket_1x01_P2.54mm_Vertical | J3 |
| 1 | Envelope | Jack_Hole_Square | J4 |
| 4 | 100k | Potentiometer_Alps_RK09K_Single_Vertical | RV1, RV2, RV3, RV4 |
| 8 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 |
| 4 | LED | LED_1206_3216Metric_ReverseMount_Hole1.8x2.4mm | D9, D10, D11, D12 |
| 1 | 1n | C_Disc_D7.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 10u | CP_Radial_D6.3mm_P2.50mm | C2 |
| 1 | 47k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 15k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 4 | 100k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R5, R6, R10 |
| 1 | 18k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4 |
| 1 | 2k2 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7 |
| 4 | 10k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R8, R9, R11, R12 |
| 2 | 1k5 | R_1206_3216Metric | R13, R14 |
| 2 | 2k2 | R_1206_3216Metric | R15, R16 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R17, R18 |
ADSR design files
The KiCad project lives in the telec16/modular-synth repository on GitHub; these links point at the commit this page was built from.
- LayoutADSR/ADSR.kicad_pcb
ADSR: common questions
How big is the ADSR PCB?
The ADSR measures 25 × 200 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ADSR?
49 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the ADSR design files?
From the telec16/modular-synth repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ADSR design in my own project?
The repository has no license, so all rights stay with telec16. Use it as a reference, and ask the author before reusing the design.
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