L-Star
About the L-Star PCB
L-Star is an open source PCB design by jacgoudsmit, published on GitHub under the MIT license. It is a 2-layer board measuring 99.7 × 80 mm, with 51 components from 31 distinct parts.
Other key parts include the 24LC512, AS6C1008-55PCN, W65C02S6TPG-14, P8X32A and LM1086-5.0. By type, the board carries 16 resistors, 9 ICs, 9 capacitors, 7 jumpers, 5 connectors and 3 switches.
It belongs with the retro computing designs in this gallery.
From the project
Minimal 6502/Propeller Computer based on Propeddle
L-Star: Minimal 6502/Propeller computer =======================================
The L-Star is an open-source single-board computer design that uses a Propeller to control a 6502 processor. You can use it to emulate early 6502 based computers such as the Apple-1 or the OSI Challenger, or you can invent your own 6502 computer.
All the parts that are needed to put an L-Star together are available as through-hole, so you can build it on a breadboard or on a Propeller proto board. You can also get it as a kit called the L-Star Plus, which has some extra features such as a 128KB SRAM chip and an…
Main components on the L-Star
L-Star bill of materials (BOM)
51 components, 31 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 24LC512 | 00JG-DIP-8__300 | IC1 |
| 1 | AS6C1008-55PCN | 00JG-DIP-32__600 | IC2 |
| 1 | W65C02S6TPG-14 | 00JG-DIP-40__600 | IC3 |
| 1 | P8X32A | 00JG-DIP-40__600 | IC4 |
| 1 | LM1086-5.0 | 00JG-TO-220_Neutral123_Horizontal_LargePads-Heatsink | IC5 |
| 1 | LM1086-3.3 | 00JG-TO-220_Neutral123_Horizontal_LargePads-Heatsink | IC6 |
| 3 | Mount hole | 00JG-MountHoleM3 | U2, U3, U4 |
| 1 | 5MHz | 00JG-Crystal_HC49-U_Vertical | X1 |
| 1 | PROP PLUG | 00JG-Pin_Header_Angled_1x04 | P1 |
| 1 | EXPANSION | 00JG-Pin_Header_Straight_2x25 | P2 |
| 1 | PS/2 KBD | 00JG-MiniDin6 | P3 |
| 1 | VIDEO OUT | 00JG-RCAsocket | P6 |
| 1 | 7-15V 1.5A IN | 00JG-BARREL_JACK_RAPC722X | P7 |
| 1 | P25 | 00JG-Pin_Header_Straight_1x08 | JP1 |
| 1 | RDY/~SO~/~SYNC~/~NMI~/~IRQ~/~RES~/A16/GND | 00JG-Pin_Header_Straight_1x08 | JP2 |
| 1 | P26 | 00JG-Pin_Header_Straight_1x08 | JP3 |
| 1 | RDY/~SO~/~SYNC~/~NMI~/~IRQ~/~RES~/~RAM~/+3.3 | 00JG-Pin_Header_Straight_1x08 | JP4 |
| 1 | P27 | 00JG-Pin_Header_Straight_1x08 | JP5 |
| 1 | RESET | 00JG-Pin_Header_Straight_1x02 | JP6 |
| 1 | RESET6502 | 00JG-Pin_Header_Straight_1x02 | JP7 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | RESET | 00JG-PUSHBUTTON | SW1 |
| 1 | RESET6502 | 00JG-PUSHBUTTON | SW2 |
| 1 | <ON | 00JG-NKK_CS12ANW03 | SW3 |
| 1 | POWER | 00JG-LED5MM | D1 |
| 5 | 100n | 00JG-CapacitorMLCC | C1, C2, C3, C4, C5 |
| 1 | 470p | 00JG-CapacitorMLCC | C6 |
| 3 | 47u/16V | 00JG-C1V5 | C7, C8, C9 |
| 6 | 3K3 | 00JG-R400 | R1, R2, R3, R4, R5, R16 |
| 6 | 10K | 00JG-R400 | R6, R7, R8, R9, R10, R11 |
| 3 | 100 | 00JG-R400 | R12, R13, R15 |
| 1 | 270 | 00JG-R400 | R14 |
L-Star design files
The KiCad project lives in the jacgoudsmit/L-Star repository on GitHub; these links point at the commit this page was built from.
L-Star: common questions
How big is the L-Star PCB?
The L-Star measures 99.7 × 80 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the L-Star?
51 components, from 31 distinct parts. The full bill of materials is listed on this page.
Where can I download the L-Star design files?
From the jacgoudsmit/L-Star repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the L-Star design in my own project?
Yes, under the terms of its MIT license, which jacgoudsmit chose for the repository.
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