RC1 Compact Flash
tebl·RC-ONE·RC1 Compact Flash/RC1 Compact Flash.kicad_pcb
About the RC1 Compact Flash PCB
RC1 Compact Flash is an open source PCB design by tebl, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 99.1 × 54.6 mm, with 20 components from 12 distinct parts.
Other key parts include the 74LS00, 74LS245, 74LS138 and 74LS244. By type, the board carries 5 ICs, 5 connectors, 5 capacitors, 4 resistors and 1 diode.
It belongs with the retro computing and displays & leds designs in this gallery.
From the project
A recreation of the MOS KIM-1 microcomputer, the start of the Commodore-line of computers. Complete with hex keypad, six digit displays and a lot of 8-bit fun!
Originally created by MOS in order to show off their new 6502-processor, it was a success that tapped into a market they probably never knew themselves was growing into a force to be reckoned with - the homecomputing market! Later bought up by little-known typewriter-manufacturer Commodore, the KIM-1 is an iconic piece of hardware and since I can't afford to buy one I'll build one instead.

Main components on the RC1 Compact Flash
RC1 Compact Flash bill of materials (BOM)
20 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS00 | DIP-14_W7.62mm_Socket_LongPads | U1 |
| 1 | 74LS245 | DIP-20_W7.62mm_Socket_LongPads | U2 |
| 2 | 74LS138 | DIP-16_W7.62mm_Socket_LongPads | U3, U4 |
| 1 | 74LS244 | DIP-20_W7.62mm_Socket_LongPads | U5 |
| 1 | Expansion | Pin_Header_Angled_1x39_Pitch2.54mm | J1 |
| 1 | ADDRESS | Pin_Header_Straight_2x06_Pitch2.54mm | J2 |
| 1 | ADAPTER | IDC-Header_2x20_P2.54mm_Horizontal | J3 |
| 2 | POWER | Pin_Header_Angled_1x04_Pitch2.54mm | J4, J5 |
| 1 | LED | LED_D5.0mm_Horizontal_O3.81mm_Z3.0mm | D1 |
| 5 | 100nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5 |
| 3 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
| 1 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
RC1 Compact Flash design files
The KiCad project lives in the tebl/RC-ONE repository on GitHub; these links point at the commit this page was built from.
RC1 Compact Flash: common questions
How big is the RC1 Compact Flash PCB?
The RC1 Compact Flash measures 99.1 × 54.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the RC1 Compact Flash?
20 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the RC1 Compact Flash design files?
From the tebl/RC-ONE repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the RC1 Compact Flash design in my own project?
Yes, under the terms of its CERN-OHL-1.2 license, which tebl chose for the repository.
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