
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io

Plugin Composite Mod for Atari 2600 VCS
Atari2600CompositeMod is an open-source printed circuit board by jimbro1000, from the jimbro1000/Atari2600CompositeMod repository on GitHub. It is a 2-layer board of 33.4 × 16.7 mm with 15 parts on 13 nets, routed with 41 tracks and 0 vias.
It is built around the MMBT3904 and MMBT3906. Its parts include 9 resistors, 3 connectors, 2 transistors and 1 capacitor. It belongs with the retro computing and games boards of this library.
This repository contains a hardware design of a composite video mod to fit the Atari 2600 VCS
The project is built in KiCad 7
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R5 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 150R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 18R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | 3.3K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 47nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 5K | Potentiometer_THT:Potentiometer_Bourns_3386C_Horizontal | R3 |
| 1 | 68R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 75R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | AudioIn | TestPoint:TestPoint_THTPad_1.0x1.0mm_Drill0.5mm | J1 |
| 1 | Composite | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J3 |
| 1 | MMBT3904 | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
| 1 | MMBT3906 | Package_TO_SOT_SMD:SOT-23-3 | Q2 |
| 1 | input | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J2 |

fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io

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It measures 33.4 × 16.7 mm and has 2 copper layers, 1.6 mm thick.
15 parts, built around the MMBT3904 and MMBT3906. 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 jimbro1000/Atari2600CompositeMod repository on GitHub, at the commit this page was made from: the board is Atari2600CompositeMod.kicad_pcb and its schematic Atari2600CompositeMod.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 jimbro1000 before reusing the design.