ASDR - Old
About the ASDR - Old PCB
ASDR - Old 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 - Old
ASDR - Old 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_D5.2mm_P2.50mm_LayDown | 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 - Old design files
The KiCad project lives in the PancakeLegend/HackSynth repository on GitHub; these links point at the commit this page was built from.
ASDR - Old: common questions
How big is the ASDR - Old PCB?
The ASDR - Old measures 50 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ASDR - Old?
40 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the ASDR - Old design files?
From the PancakeLegend/HackSynth repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ASDR - Old 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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