ASDR
About the ASDR PCB
ASDR is an open source PCB design by PancakeLegend, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 50 × 100 mm, with 40 components from 24 distinct parts.
Other key parts include the ICM7555xP and TL072. By type, the board carries 13 resistors, 5 connectors, 5 diodes, 4 transistors, 4 capacitors and 3 ICs.
It belongs with the audio designs in this gallery.
From the project
A modular synth project
Main components on the ASDR
ASDR bill of materials (BOM)
40 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ICM7555xP | DIP-8_W7.62mm_LongPads | U1 |
| 2 | TL072 | DIP-8_W7.62mm_LongPads | U2, U3 |
| 3 | BC550 | TO-92_Inline - Handsolder | Q1, Q2, Q3 |
| 1 | BC547 | TO-92_Inline - Handsolder | Q4 |
| 1 | IN | Jack_3.5mm | J1 |
| 2 | OUT | Jack_3.5mm | J2, J3 |
| 2 | Conn_01x03 | JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J4, J5 |
| 1 | SUSTAIN 10k | Potentiometer_Alps_RK09K_Horizontal | RV1 |
| 1 | DECAY 1M | Potentiometer_Alps_RK09K_Horizontal | RV2 |
| 1 | ATTACK 1M | Potentiometer_Alps_RK09K_Horizontal | RV3 |
| 1 | RELEASE 1M | Potentiometer_Alps_RK09K_Horizontal | RV4 |
| 1 | 100k Trim | TrimPot_Bourns_3339S_Horizontal | RV5 |
| 1 | SW_SPDT | Switch SPDT - MTS-102 | SW1 |
| 4 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4 |
| 1 | LED | LED_D5.0mm | D5 |
| 2 | 220nF | C_Ceramic_D4.5mm_P5.00mm | C1, C3 |
| 1 | 10uF | CP_Radial_D4.0mm_P1.50mm | C2 |
| 1 | 1uF | C_Ceramic_D4.5mm_P5.00mm | C4 |
| 2 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R4 |
| 1 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 4.7k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R5, R6 |
| 2 | 100R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R8 |
| 1 | 5.6k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R9 |
| 4 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R11, R12, R13 |
ASDR design files
The KiCad project lives in the PancakeLegend/HackSynth repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCAD/ASDR/ASDR.kicad_pcb
- SchematicKiCAD/ASDR/ASDR.kicad_sch
ASDR: common questions
How big is the ASDR PCB?
The ASDR measures 50 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ASDR?
40 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the ASDR design files?
From the PancakeLegend/HackSynth repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the ASDR design in my own project?
Yes, under the terms of its GPL-3.0 license, which PancakeLegend chose for the repository.
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