RC1 Sound Interface

tebl·RC-ONE·RC1 Sound Interface/RC1 Sound Interface.kicad_pcb

RC1 Sound Interface PCB layout, top view — open source board by tebl

About the RC1 Sound Interface PCB

RC1 Sound Interface 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 × 68 mm, with 35 components from 17 distinct parts.

Other key parts include the SID #1, LM386, SID #2 and 74LS138. By type, the board carries 19 capacitors, 6 ICs, 4 connectors and 4 resistors.

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!

Made in order to use Commodore 64 SID chip replacements such as the SwinSID, armSID or fpgaSID as a sound device. Purposefully does not include the extra voltages needed to use a real SID-chip, mostly because the functioning chips that are left in this world belong in real computers (also, did not want to mess around with more than one power rail).

Main components on the RC1 Sound Interface

SID #1LM386SID #274LS138

RC1 Sound Interface bill of materials (BOM)

35 components, 17 distinct parts.

Qty	Part	Footprint	Refs
1	SID #1	DIP-28_W15.24mm_Socket	U1
2	LM386	DIP-8_W7.62mm_Socket	U2, U4
1	SID #2	DIP-28_W15.24mm_Socket	U3
2	74LS138	DIP-16_W7.62mm_Socket	U5, U6
1	Expansion	Pin_Header_Angled_1x39_Pitch2.54mm	J1
1	ADDRESS	Pin_Header_Straight_2x06_Pitch2.54mm	J2
1	MIXING	Pin_Header_Straight_2x05_Pitch2.54mm	J3
1	AUDIO	Tayda_3.5mm_stereo_TRS_jack_A-853	J4
2	10k	Potentiometer_Trimmer_Bourns_3296W	RV1, RV2
6	100nF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C1, C2, C3, C4, C5, C6
4	470pF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C7, C8, C9, C10
4	10uF*	CP_Radial_D5.0mm_P2.50mm	C11, C12, C13, C14
2	47nF	C_Disc_D4.7mm_W2.5mm_P5.00mm	C15, C16
2	220uF	CP_Radial_D5.0mm_P2.50mm	C17, C18
1	100uF	CP_Radial_D5.0mm_P2.50mm	C19
2	10	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R2
2	470	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3, R4

RC1 Sound Interface 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.

LayoutRC1 Sound Interface/RC1 Sound Interface.kicad_pcb

RC1 Sound Interface: common questions

How big is the RC1 Sound Interface PCB?

The RC1 Sound Interface measures 99.1 × 68 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RC1 Sound Interface?

35 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the RC1 Sound Interface 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 Sound Interface 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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