2 layers61 × 64.1 mm
Rfreplacement
c0pperdragon/C64-Video-Enhancement
Component video modification for the C64 8-bit computer
98 parts286MIT
2 layers55.9 × 43.9 mm
Rfreplacement
pmandes/C64-RF-Modulator9Commodore C64C RF modulator replacement with S-Video and stereo audio output.
- Size
- 55.9 × 43.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 25
- Pads
- 89
- Tracks, vias
- 135, 26
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 28 Feb 2021
- Updated
- 14 Jul 2022
Overview
Rfreplacement is an open-source printed circuit board by pmandes, from the pmandes/C64-RF-Modulator repository on GitHub, published under the MIT licence. It is a 2-layer board of 55.9 × 43.9 mm with 36 parts on 25 nets, routed with 135 tracks and 26 vias.
It is built around the THS7316D and LM1117-3.3. Its parts include 11 resistors, 5 capacitors and 3 connectors. It belongs with the retro computing and games and audio and music boards of this library.
Main components
2
THS7316D
SOIC-8-40℃~+85℃ 0.1% 0.1deg 18300uA 19.3mA 36MHz 3V~5V 5 Anti-aliasing / reconstruction filter、Input buffer、DC clamp / DC restore、ESD protection Three channels SOIC-8 Video Amplifiers ROHSTexas InstrumentsOperational Amplifier
LM1117-3.3
SOT-2231 1.3V@(1000mA) 15V 1A 2mA 3.3V Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorised
README
README.mdC64-RF-Modulator with S-Video Mod
This is a project of a modulator replacement based on an analog c0pperdragon module. It was adjusted in size to the Commodore C64C motherboard and extended with S-Video and Strereo Audio outputs.
Changelog:
1.2
- internal audio route to left and/or right channel
- ferrite beads to suppresses high-frequency electronic noise
- silkscreen layer with descriptions of all outputs and elements
- 3D models for a nice rendering
- project cleaned up and migrated to KiCad 6.0
- interactive BOM
1.1
- prototype fixes
1.0
- PCB size adjusted to C64C motherboards (ASSY No.250469)
- S-Video connector added (mini-DIN 4)
- added standard stereo audio mini-jack 3.5mm output
Bill of materials:
Final revision:
- all jumpers removed: audio output from an external source (e.g. MixSID)
- all jumpers on: mono signal from the motherboard connected to the left and right channels
Prototype images:
The board connected to SixtyClone. Image from S-Video output:
The board can be soldered with pins to the motherboard. Then the S-Video and Audio outputs will be at the level of the corresponding openings in the housing.
Links:
- c0pperdragon analog module: https://github.com/c0pperdragon/C64-Video-Enhancement/tree/master/analog_only
- order PCBs directly from PCBWay: https://www.pcbway.com/project/shareproject/Commodore_C64C_modulator_replacement_0f6cacf9.html
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C28, C29 |
| 3 | 680 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R36, R38, R39 |
| 3 | 75 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33, R34, R35 |
| 3 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | GND1, GND2, GND3 |
| 3 | Conn_01x02 | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J1, J2, J3 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C9 |
| 2 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R37, R40 |
| 2 | 81-BL02RN1R2M2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | FB3, FB4 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | RFCONC1, RFCONC2 |
| 2 | Ferrite Bead | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1, FB2 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31 |
| 1 | 2k2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R32 |
| 1 | 3k3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R30 |
| 1 | AudioJack2_Ground | Connector_Audio:Jack_3.5mm_Ledino_KB3SPRS_Horizontal | STEREO_OUT1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | AUDIO_OUT1 |
| 1 | Jumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JPLUM1 |
| 1 | LM1117-3.3 | Package_TO_SOT_SMD:SOT-223 | LM1117-3.3 |
| 1 | Mini-DIN-4 | footprints:TE_5749181-1 | S-VIDEO1 |
| 1 | THS7316 | Package_SO:SSOP-8_3.95x5.21x3.27mm_P1.27mm | THS7316 |
The 34 most common of 36 parts.
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Questions
How big is the Rfreplacement PCB?
It measures 55.9 × 43.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Rfreplacement use?
36 parts, built around the THS7316D and LM1117-3.3. 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.
Where can I download the Rfreplacement KiCad files?
From the pmandes/C64-RF-Modulator repository on GitHub, at the commit this page was made from: the board is rfreplacement/rfreplacement.kicad_pcb and its schematic rfreplacement/rfreplacement.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Rfreplacement design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).