2 layers181.1 × 109.6 mm
Bees
apaleslimghost/synths
schematics, PCBs, designs and code for Pale Slim Ghost Synthesisers hardware
185 parts5
2 layers127 × 128.5 mm
Dolphins
apaleslimghost/synths5schematics, PCBs, designs and code for Pale Slim Ghost Synthesisers hardware
- Size
- 127 × 128.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 208
- Nets
- 156
- Pads
- 598
- Tracks, vias
- 402, 58
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 10 Apr 2022
- Updated
- 1 Nov 2026
Overview
Dolphins is an open-source printed circuit board by apaleslimghost, from the apaleslimghost/synths repository on GitHub. It is a 2-layer board of 127 × 128.5 mm with 208 parts on 156 nets, routed with 402 tracks and 58 vias.
It is built around the PT2399 and MMBT3904. Its parts include 83 resistors, 47 capacitors, 20 connectors, 8 ICs and 6 transistors.
Main components
2README
readme.mdschematics, PCBs, designs and code for Pale Slim Ghost Synthesisers hardware. these can be viewed on CADLAB.io.
todo
- generate build guides with
pcbdraw populate - publishing to github pages
- makefiles with
kikit
licence
unless otherwise specified:
- hardware is licenced under CERN-OHL-S
- software/firmware is licenced under Parity Public Licence 7.0.0
- artwork is licenced under Creative Commons BY-NC-SA 4.0
generally, that means you can use, edit, and make things in this repository, but please share the source if you do.
Parts
208| Qty | Value | Footprint | References |
|---|---|---|---|
| 29 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R5, R10, R11, R13, R22, R24, R28, R29, R30, R32, R33, R34, R36, R47, R49 +13 |
| 24 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C18, C19, C20, C21, C28, C29, C30, C34, C35, C36↑, C37, C39, C40, C41, C42 +8 |
| 16 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R16, R20, R21, R39, R41, R45, R46, R60, R64, R68, R69, R80, R81, R82, R83 |
| 15 | 15k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R14, R17, R19, R25, R37, R38, R42, R44, R50, R62, R65, R67, R71, R74 |
| 13 | AudioJack2_SwitchT | AudioJacks:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13 |
| 12 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R9, R18, R23, R27, R31, R43, R48, R52, R56, R66, R79 |
| 7 | 4.7u | Capacitor_SMD:CP_Elec_5x5.9 | C2, C3, C12, C13, C15, C23, C24 |
| 6 | 10μ | Capacitor_SMD:CP_Elec_5x5.9 | C1, C11, C22, C32, C33, C38 |
| 6 | 470p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6, C16, C17, C26, C27 |
| 6 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 5 | 30k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R26, R51, R73, R77 |
| 4 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U3, U5, U7 |
| 4 | VAL** | Pale Slim Ghost:mousebite-2.54x5.08mm | mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot |
| 3 | 12k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15, R40, R63 |
| 3 | 2.2n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C14, C25 |
| 3 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R35, R59 |
| 3 | PT2399 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2, U4, U6 |
| 3 | R_Potentiometer | Pale Slim Ghost:Potentiometer_Song_Huei_R0904N | RV1, RV3, RV5 |
| 3 | R_Potentiometer_LED | Pale Slim Ghost:Alpha RA2045F-20 | RV2, RV4, RV6 |
| 2 | Conn_01x05_Female | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J17, J20 |
| 2 | Conn_01x05_Male | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J18, J19 |
| 1 | |||
| 1 | 10μ | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C31 |
| 1 | Conn_01x12_Female | Connector_PinSocket_2.54mm:PinSocket_1x12_P2.54mm_Vertical | J16 |
| 1 | Conn_01x12_Male | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J15 |
| 1 | Conn_02x05_Odd_Even | Pale Slim Ghost:PinHeader_Shrouded_2x05_P2.54mm_Horizontal | J14 |
| 1 | L78L05_SOT89 | Pale Slim Ghost:SOT-89-3 | U8 |
The 175 most common of 208 parts.
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Questions
How big is the Dolphins PCB?
It measures 127 × 128.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dolphins use?
208 parts, built around the PT2399 and MMBT3904. 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 Dolphins KiCad files?
From the apaleslimghost/synths repository on GitHub, at the commit this page was made from: the board is eurorack/modules/dolphins/dolphins.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dolphins design in my own project?
Its repository states no licence, so its author keeps all rights: ask apaleslimghost before reusing the design.