
ISD1700 sampler main board
hiro-akihabara/OpnBeat
OpnBeat is open source Lo-fi sampler project

OPMBoard is an open-source printed circuit board by Team-Digital-Fairy, from the Team-Digital-Fairy/OPMBoard repository on GitHub. It is a 2-layer board of 95 × 75 mm with 54 parts on 69 nets, routed with 617 tracks and 2 vias.
It is built around the NJM4580L. Its parts include 16 resistors, 11 capacitors, 5 ICs, 4 connectors and 3 diodes.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R10, R12, R14 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R4 |
| 3 | NJM4580 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U1, U2, U3 |
| 2 | 100u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1, C2 |
| 2 | 10kB | Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical | RV1, RV2 |
| 2 | 10u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C8, C9 |
| 2 | 200k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6 |
| 2 | 3300p | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C3, C4 |
| 2 | 47 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15, R16 |
| 2 | 470u | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C10, C11 |
| 2 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11, R13 |
| 2 | 47uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C5, C6 |
| 2 | 5.1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R8 |
| 1 | -5V_GREEN | LED_THT:LED_D5.0mm | D3 |
| 1 | 270 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 4.7k * 8 | Resistor_THT:R_Array_SIP9 | RN1 |
| 1 | 4.7u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C7 |
| 1 | 4.7uH | Inductor_THT:L_Axial_L7.0mm_D3.3mm_P12.70mm_Horizontal_Fastron_MICC | L1 |
| 1 | 5V_GREEN | LED_THT:LED_D5.0mm | D1 |
| 1 | AudioJack3 | Connector_Audio:Jack_3.5mm_Lumberg_1503_07_Horizontal | J4 |
| 1 | CXO_DIP14 | MayLib:Oscillator_DIP-14_Full | X1 |
| 1 | CXO_DIP8 | MayLib:Oscillator_DIP-8_Full | X2 |
| 1 | Conn_01x03 | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J3 |
| 1 | Conn_02x12_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x12_P2.54mm_Vertical | J2 |
| 1 | Fiducial | Fiducial:Fiducial_0.5mm_Mask1mm | FID1 |
| 1 | ITX0505S-R | Converter_DCDC:Converter_DCDC_XP_POWER-ITxxxxxS_THT | PS1 |
| 1 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | Jumper_3_Open | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 1 | SW_SPDT | Button_Switch_THT:SW_Slide_1P2T_CK_OS102011MS2Q | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | VDD_GREEN | LED_THT:LED_D5.0mm | D2 |
| 1 | YM2151 | Package_DIP:DIP-24_W15.24mm_Socket_LongPads | U4 |
| 1 | YM3012 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U5 |

hiro-akihabara/OpnBeat
OpnBeat is open source Lo-fi sampler project


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It measures 95 × 75 mm and has 2 copper layers, 1.6 mm thick.
54 parts, built around the NJM4580L. 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.
From the Team-Digital-Fairy/OPMBoard repository on GitHub, at the commit this page was made from: the board is OPMBoard.kicad_pcb and its schematic OPMBoard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Team-Digital-Fairy before reusing the design.