2 layers132.1 × 55.5 mm
WH148
gligli/overcycler
Affordable DIY polyphonic hybrid single cycle / analog synthesizer
12 parts45GPL-3.0
2 layers233.7 × 172.2 mm
Overcycler3
gligli/overcycler45Affordable DIY polyphonic hybrid single cycle / analog synthesizer
- Size
- 233.7 × 172.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 335
- Nets
- 410
- Pads
- 1,208
- Tracks, vias
- 1,626, 530
- Pours
- 1,209
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Oct 2013
- Updated
- 14 Jul 2025
Overview
Overcycler3 is an open-source printed circuit board by gligli, from the gligli/overcycler repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 233.7 × 172.2 mm with 335 parts on 410 nets, routed with 1,626 tracks and 530 vias.
It is built around the LPC1778FBD144, IA0505S-2W and IB0503LSY-1WR1, with the LM13700M, TLV2556IDW and W25Q512JVFIQ among its other parts. Its parts include 152 resistors, 132 capacitors, 23 ICs, 10 connectors and 5 diodes. It belongs with the audio and music boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
9
LPC1778FBD144
LQFP-144(20x20)-40℃~+85℃ 109 120MHz 2.4V~3.6V 32 Bit 4KB 512KB 96KB ARM Cortex-M3 Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Built-in general-purpose timer、Hardware CRC、Calendar function、Window watchdog (WWDG) LQFP-144(20x20) Microcontrollers (MCU/MPU/SOC) ROHSNXP SemiconductorsMicrocontrollers (MCU/MPU/SOC)
IA0505S-2W
插件-40℃~+85℃ 1.5kV 100kHz 100uF 2 2W 4.75V~5.25V 50mVp-p 83% ±200mA ±5V 插件 Isolated Power Modules ROHSrltIsolated Power Modules
IB0503LSY-1WR1
SIP,19.6x6mm-40℃~+85℃ 1 1.5kV 1W 280kHz 3.3V 303mA 30mVp-p 3300uF 4.75V~5.25V 67% 8mA Short Circuit Protection SIP,19.6x6mm Isolated Power Modules ROHSJETEKPSIsolated Power Modules
LM13700M
SOIC-16-16V~-4.75V、4.75V~16V 0℃~+70℃ 110dB 2 2.6mA 20mA 400nA 4mV 50V/us 600nA 9.5V~32V SOIC-16 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
TLV2556IDW
SOIC-20-300mil-40℃~+85℃ 100nA 11 12 1LSB 2.7V~5.5V 200kHz Multiplexers、Bipolar input SAR SPI SOIC-20-300mil Analog to Digital Converters (ADC) ROHSTexas InstrumentsAnalog To Digital Converters (ADC)
W25Q512JVFIQ
SOIC-16-300mil-40℃~+85℃ 100,000 cycles 10uA 133MHz 150ms@(64KB) 2.7V~3.6V 20 Years 3.5ms 512Mbit SPI SOIC-16-300mil NOR FLASH ROHSWinbond ElecNOR FLASH74HC138
SOP-160℃~+70℃ 24ns@5.0V,16pF 2V~6V 3/8 5.2mA 5.2mA 5uA 74HC Decoder Reverse function Single Supply SOP-16 Signal Switches, Multiplexers, Decoders ROHSGRSignal Switches, Multiplexers, DecodersADUM3160BRW
SOIC16WFull/Low Speed 2.5 kV USB Digital IsolatorAnalog DevicesUncategorised
BC856B
SOT-23-65℃~+150℃ 1 PNP 100MHz 100mA 100nA 200mW 220 500mV 5V 65V PNP SOT-23 Bipolar (BJT) ROHSUMWBipolar (BJT)
README
README.mdovercycler
Affordable DIY polyphonic (6 voices) hybrid single cycle / analog synthesizer
Everything is under GPL v3 license, except files that have their own license in the header.
More details on my synth blog: http://gliglisynth.blogspot.com/search/label/overcycler
Parts
335| Qty | Value | Footprint | References |
|---|---|---|---|
| 38 | 100nF | Capacitor_SMD:C_0805_2012Metric | C101, C102, C103, C104, C105, C106, C108, C109, C111, C112, C114, C123, C126, C130, C131, C132 +22 |
| 31 | 15k | Resistor_SMD:R_0805_2012Metric | R105, R106, R107, R108, R109, R110, R113, R114, R115, R116, R117, R118, R119, R121, R122, R124 +15 |
| 20 | 4k7 | Resistor_SMD:R_0805_2012Metric | R30, R31, R34, R35, R38, R39, R48, R51, R52, R55, R56, R59, R61, R62, R92, R93 +4 |
| 18 | 10n | Capacitor_SMD:C_0603_1608Metric | C46, C47, C48, C49, C50, C51, C52, C53, C54, C55, C56, C57, C65, C67, C69, C71 +2 |
| 18 | 820 | Resistor_SMD:R_0805_2012Metric | R29, R32, R33, R36, R37, R100, R101, R102, R103, R104, R120, R123, R126, R129, R132, R135 +2 |
| 16 | 100n | Capacitor_SMD:C_0805_2012Metric | C27, C64, C92, C93, C107, C110, C113, C115, C116, C117, C122, C124, C125, C127, C128, C129 |
| 15 | 470 | Resistor_SMD:R_0805_2012Metric | R42, R43, R44, R45, R46, R47, R49, R50, R53, R54, R57, R58, R140, R149, R152 |
| 14 | 10k | Resistor_SMD:R_0805_2012Metric | R60, R68, R72, R76, R80, R84, R88, R89, R98, R111, R137, R148, R150, R151 |
| 12 | 22u | Capacitor_SMD:C_0805_2012Metric | C87, C88, C89, C90, C91, C94, C95, C96, C97, C98, C99, C100 |
| 12 | 470n | Capacitor_SMD:C_0805_2012Metric | C20, C21, C22, C23, C24, C25, C33, C35, C37, C39, C41, C43 |
| 8 | 100u | Additional:CP_EIA-3528-21_Kemet-B | C7, C8, C9, C10, C11, C12, C120, C121 |
| 7 | 1k | Resistor_SMD:R_0805_2012Metric | R5, R8, R64, R112, R139, R142, R143 |
| 7 | 47u | Capacitor_SMD:C_1206_3216Metric | C26, C58, C59, C60, C61, C62, C63 |
| 6 | 10nF | Capacitor_SMD:C_0805_2012Metric | C14, C15, C16, C17, C18, C19 |
| 6 | 22k | Resistor_SMD:R_0805_2012Metric | R23, R24, R25, R26, R27, R28 |
| 6 | 390 | Resistor_SMD:R_0805_2012Metric | R65, R69, R73, R77, R81, R85 |
| 6 | 6k8 | Resistor_SMD:R_0805_2012Metric | R66, R70, R74, R78, R82, R86 |
| 6 | 820p | Capacitor_SMD:C_0603_1608Metric | C66, C68, C70, C72, C74, C76 |
| 6 | MCP4922-ESL | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U10, U11, U12, U13, U14, U15 |
| 6 | SSI2144 | Additional:SSOP-16_3.9x4.9mm_P0.635mm | U3, U4, U5, U6, U7, U8 |
| 5 | 1N4148 | Additional:D_SOD-123 | D1, D2, D3, D4, D5 |
| 4 | 2k2 | Resistor_SMD:R_0805_2012Metric | R3, R6, R9, R11 |
| 4 | 33 | Resistor_SMD:R_0603_1608Metric | R1, R2, R90, R91 |
| 4 | 47k | Resistor_SMD:R_0805_2012Metric | R4, R12, R15, R21 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_4mm_Pad | H1, H2, H3, H4 |
| 3 | 22p | Capacitor_SMD:C_0805_2012Metric | C31, C32, C119 |
| 3 | AudioJack3_Switch | Additional:Jack_6.35mm_HOOYA_PJ-609AE_Horizontal | J2, J3, J4 |
| 3 | LM13700 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | IC1, IC2, IC3 |
| 2 | 100p | Capacitor_SMD:C_0805_2012Metric | C1, C5 |
| 2 | 10uF | Additional:CP_EIA-3216-18_Kemet-A | C6, C13 |
| 2 | 120k | Resistor_SMD:R_0805_2012Metric | R16, R20 |
| 2 | 330 | Resistor_SMD:R_0805_2012Metric | R7, R10 |
| 2 | 33k | Resistor_SMD:R_0805_2012Metric | R17, R22 |
| 2 | 56k | Resistor_SMD:R_0805_2012Metric | R13, R19 |
| 2 | 82k | Resistor_SMD:R_0805_2012Metric | R14, R18 |
| 2 | TL064 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U1, U19 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R145 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Alps_RK163_Dual_Horizontal | RV1 |
| 1 | 10u | Additional:CP_EIA-3216-18_Kemet-A | C118 |
| 1 | 10u | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 12MHz | Crystal:Crystal_SMD_ECS_CSM3X-2Pin_7.6x4.1mm | Y1 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R141 |
| 1 | 1k5 | Resistor_SMD:R_0603_1608Metric | R144 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric | R41 |
| 1 | 220k | Resistor_SMD:R_0805_2012Metric | R138 |
| 1 | 270 | Resistor_SMD:R_0805_2012Metric | R63 |
| 1 | 3M3 | Resistor_SMD:R_0805_2012Metric | R147 |
| 1 | 470uF | Additional:CP_EIA-7343-43_Kemet-X | C4 |
| 1 | 6N139 | Package_DIP:DIP-8_W7.62mm | OC1 |
| 1 | 74HC138 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U17 |
| 1 | AD5674R | Additional:LFCSP-28-1EP_4x4mm_P0.4mm_EP2.6x2.6mm_ThermalVias | U2 |
| 1 | ADUM3160 | Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm | U20 |
| 1 | BC856B | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Control_Down | Connector_JST:JST_PH_B7B-PH-K_1x07_P2.00mm_Vertical | J10 |
| 1 | Control_Up | Connector_JST:JST_PH_B7B-PH-K_1x07_P2.00mm_Vertical | J7 |
| 1 | DIN-5_180degree | Additional:HOOYA DIN-504-M10 | J1 |
| 1 | Display | Additional:IDC-Header_2x08_P2.54mm_Vertical_Mirrored | J8 |
| 1 | FT232 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J6 |
| 1 | IA0505S-2W | Additional:IA0505S-2W | PS1 |
| 1 | IB0503LSY-1WR1 | Additional:IB0503LSY | PS2 |
| 1 | Keyboard | Connector_JST:JST_XH_B8B-XH-A_1x08_P2.50mm_Vertical | J9 |
| 1 | LPC1778FBD144 | Package_QFP:LQFP-144_20x20mm_P0.5mm | U9 |
| 1 | POWER | Additional:SPUN192600 | SW1 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | TLV2556 | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U18 |
| 1 | USB_B | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J5 |
| 1 | W25Q512JVFIQ | Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm | U16 |
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Questions
How big is the Overcycler3 PCB?
It measures 233.7 × 172.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Overcycler3 use?
335 parts, built around the LPC1778FBD144, IA0505S-2W, IB0503LSY-1WR1 and LM13700M. 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 Overcycler3 KiCad files?
From the gligli/overcycler repository on GitHub, at the commit this page was made from: the board is hardware/overcycler3.kicad_pcb and its schematic enclosure/PT-10 Rear/PT-10 Rear.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Overcycler3 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).