Spreadout
About the Spreadout PCB
Spreadout is an open source PCB design by aslak3, published on GitHub under the GPL-2.0 license. It is a 4-layer board measuring 239.4 × 165.7 mm, with 190 components from 63 distinct parts.
Other key parts include the EPC2, SC26C94, MAX238, MC68030RC and 68882. By type, the board carries 78 capacitors, 49 resistors, 34 ICs, 15 connectors, 4 crystals and 4 diodes.
It belongs with the retro computing and sensors designs in this gallery.
From the project
MC68030 based expandable computer design
The specification for MAXI030, a MC68030 based computer, is as follows:
A core "glue" that is wired to master the 32 bit busses Glue is provided by an EPF10K130EQC240-1 FPGA A 68030 coupled with a 68882 512K x 16 flashes in the form of 2 x SST39SF040 in PLCC32 2 x 72 pin SIMM slots with a controller implemented in the FPGA A SC26C94 QUART with the following arrangements of the four serial ports: Two on RJ45 at RS-232 levels following the standard Cisco pinnout One for my Amiga 600 keyboard on an RJ11 And a TTL header for debug and the bring-up Onboard 10Mbit/s Ethernet using a RTL8019AS A…
Main components on the Spreadout
Spreadout bill of materials (BOM)
190 components, 63 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | EPC2 | PLCC-20 | U1, U34 |
| 1 | SC26C94 | PLCC-52 | U2 |
| 1 | MAX238 | SOIC-24W_7.5x15.4mm_P1.27mm | U3 |
| 1 | MC68030RC | PGA128 | U4 |
| 1 | 68882 | PLCC-68_THT-Socket | U5 |
| 1 | 74LS03 | SOIC-14_3.9x8.7mm_P1.27mm | U6 |
| 10 | 74HCT245 | SO-20_5.3x12.6mm_P1.27mm | U7, U8, U24, U25, U26, U27, U28, U29 +2 |
| 2 | SIM72Pin | SIMM72Pins | U9, U10 |
| 4 | 74HC245 | SO-20_5.3x12.6mm_P1.27mm | U11, U12, U13, U14 |
| 1 | LM75A | SO-8_3.9x4.9mm_P1.27mm | U16 |
| 1 | PCA9544APW | TSSOP-20_4.4x6.5mm_P0.65mm | U17 |
| 1 | DS1307Z+ | SOIC-8_3.9x4.9mm_P1.27mm | U18 |
| 2 | SST39SF040-PC32 | PLCC-32_THT-Socket | U19, U20 |
| 1 | AZ1117-3.3 | SOT-223-3_TabPin2 | U21 |
| 1 | AZ1117-2.5 | SOT-223-3_TabPin2 | U22 |
| 1 | SR05S05 | Converter_DCDC_RECOM_R-78E-0.5_THT | U23 |
| 1 | 74LS21 | SOIC-14_3.9x8.7mm_P1.27mm | U32 |
| 1 | RTL8019AS | RTL8019AS | U33 |
| 1 | EPF10K130EQC240 | PQFP-240_32.1x32.1mm_P0.5mm | U35 |
| 1 | MPUOSC | Oscillator_SMD_SeikoEpson_SG8002CA-4Pin_7.0x5.0mm | X1 |
Show 43 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 7.3728M | Crystal_SMD_HC49-SD | Y1 |
| 1 | 32.768 | Crystal_SMD_EuroQuartz_EQ161-2Pin_3.2x1.5mm | Y2 |
| 1 | 20M | Crystal_SMD_HC49-SD | Y3 |
| 1 | POWERLJACK | BarrelJack_Horizontal | CON1 |
| 1 | RJ10_KEYBOARD | RJ10 | J1 |
| 1 | DUALRJ45_RS232 | DUALRJ45 | J2 |
| 2 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J3, J4 |
| 1 | Mini-DIN-6 | Connector_Mini-DIN_Female_6Pin_2rows | J6 |
| 4 | DIN_41612_3x32_MIDI020_EXP | DIN41612_C_2x32_Female_Vertical_THT | J7, J8, J9, J10 |
| 1 | RJ45_Amphenol_RJMG1BD3B8K1ANR | RJ45_Amphenol_RJMG1BD3B8K1ANR | J11 |
| 1 | Conn_01x06 | PinHeader_1x06_P2.54mm_Vertical | J12 |
| 1 | TTL_SERIAL | PinHeader_1x03_P2.54mm_Vertical | P1 |
| 1 | CONN_02X20_IDE | IDC-Header_2x20_P2.54mm_Vertical | P2 |
| 1 | JTAG | IDC-Header_2x05_P2.54mm_Vertical | P3 |
| 1 | Battery_Cell | BatteryHolder_Keystone_3000_1x12mm | BT1 |
| 1 | BUZZER | Buzzer_15x7.5RM7.6 | SP1 |
| 1 | RESETBUTTON | SW_Push_1P1T_NO_CK_KSC6xxJ | SW1 |
| 1 | 3V3 | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP1 |
| 1 | 2V5 | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP2 |
| 1 | 5V | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP3 |
| 1 | CORELED | LED_1210_3225Metric | D1 |
| 1 | IDELED | LED_1210_3225Metric | D2 |
| 1 | POWERLED | LED_1210_3225Metric | D3 |
| 1 | LED | LED_1210_3225Metric | D4 |
| 61 | 0.1u | C_1206_3216Metric | C1, C2, C3, C4, C5, C6, C7, C8 +53 |
| 4 | 22p | C_1206_3216Metric | C9, C10, C57, C58 |
| 4 | 1.0u | CP_EIA-3216-18_Kemet-A | C11, C12, C13, C14 |
| 1 | 47u | CP_EIA-7343-15_Kemet-W | C34 |
| 3 | 10u | CP_EIA-3216-10_Kemet-I | C36, C37, C39 |
| 1 | 470u | CP_Elec_6.3x7.7 | C40 |
| 1 | 220u | CP_Elec_6.3x7.7 | C41 |
| 1 | 10u | CP_Elec_5x5.7 | C42 |
| 2 | 10n | C_1206_3216Metric | C59, C60 |
| 15 | 4.7K | R_1206_3216Metric | R1, R4, R5, R6, R8, R9, R10, R11 +7 |
| 11 | 1K | R_1206_3216Metric | R2, R3, R7, R12, R20, R22, R23, R24 +3 |
| 1 | 27K | R_1206_3216Metric | R17 |
| 1 | 1M | R_1206_3216Metric | R18 |
| 1 | 10K | R_1206_3216Metric | R19 |
| 1 | 200 | R_1206_3216Metric | R21 |
| 4 | 120 | R_1206_3216Metric | R30, R31, R32, R33 |
| 8 | 33 | R_Cat16-8 | RN1, RN2, RN3, RN10, RN11, RN12, RN13, RN14 |
| 2 | 4.7K | R_Cat16-8 | RN4, RN15 |
| 5 | 10K | R_Cat16-8 | RN5, RN6, RN7, RN8, RN9 |
Spreadout design files
The KiCad project lives in the aslak3/MAXI030 repository on GitHub; these links point at the commit this page was built from.
- Layoutspreadout.kicad_pcb
Spreadout: common questions
How big is the Spreadout PCB?
The Spreadout measures 239.4 × 165.7 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Spreadout?
190 components, from 63 distinct parts. The full bill of materials is listed on this page.
Where can I download the Spreadout design files?
From the aslak3/MAXI030 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Spreadout design in my own project?
Yes, under the terms of its GPL-2.0 license, which aslak3 chose for the repository.
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