
8-Bit CPU 32k
slu4coder/Minimal-64-Home-Computer
Legacy: Full TTL-only home computer with VGA and PS/2 and twice the processing power of a Commodore 64

My various small-to-medium electronics (read: EDA) projects. Free for personal use only unless otherwise specified
Orrery circuit is an open-source printed circuit board by Drummersbrother, from the Drummersbrother/vanity-electronics repository on GitHub. It is a 4-layer board of 177 × 91.8 mm with 170 parts on 277 nets, routed with 3,141 tracks and 426 vias.
It is built around the STP16CP05XT, 74HC590D and 74HC688D, with the 74HC04D and 74HC595 among its other parts. Its parts include 92 diodes, 35 ICs, 24 resistors, 7 capacitors and 1 inductor.
My various small-to-medium electronics (read: EDA) projects. Free for personal use only unless otherwise specified
| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | LED_{mars} | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +24 |
| 28 | LED_{earth} | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D41, D42, D43, D44, D45, D46, D47, D48, D49, D50, D51, D52, D53, D54, D55, D56 +12 |
| 16 | LED_{venus} | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D69, D70, D71, D72, D73, D74, D75, D76, D77, D78, D79, D80, D81, D82, D83, D84 |
| 12 | 74HC590 | Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm | U6, U9, U12, U13, U15, U16, U19, U22, U26, U28, U33, U34 |
| 8 | 430R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17, R18, R19, R20, R21, R22, R23, R24 |
| 8 | 74HC688 | Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm | U17, U23, U24, U29, U30, U35, U36, U37 |
| 8 | LED_{mercury} | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D85, D86, D87, D88, D89, D90, D91, D92 |
| 6 | 560R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R7, R9, R11, R13, R15 |
| 6 | 6.8K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R8, R10, R12, R14, R16 |
| 6 | STP16CP05XT | Package_SO:HTSSOP-24-1EP_4.4x7.8mm_P0.65mm_EP3.2x5mm | U7, U8, U10, U20, U21, U27 |
| 4 | 74HC04 | Package_SO:SO-14_5.3x10.2mm_P1.27mm | U2, U5, U18, U25 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C7 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C5 |
| 2 | 74LS08 | Package_SO:SO-14_5.3x10.2mm_P1.27mm | U3, U11 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 309K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 4.7u | Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder | L1 |
| 1 | 74HC595 | Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm | U32 |
| 1 | 976K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_1057_1x2032 | BT1 |
| 1 | C_Small | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | MCP1640BCH | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | MCP601-xST | Package_SO:TSSOP-8_4.4x3mm_P0.65mm | U1 |
| 1 | SG-3031CM | Oscillator:Oscillator_SMD_SeikoEpson_SG3030CM | X1 |
The 161 most common of 170 parts.
It measures 177 × 91.8 mm and has 4 copper layers, 1.6 mm thick.
170 parts, built around the STP16CP05XT, 74HC590D, 74HC688D and 74HC04D. 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 Drummersbrother/vanity-electronics repository on GitHub, at the commit this page was made from: the board is planet_orrery/circuit/orrery_circuit/orrery_circuit.kicad_pcb and its schematic ea_logobulb/ea_logobulb.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 Drummersbrother before reusing the design.

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