2 layers
Nrf bga
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12 parts14kMIT
2 layers57.8 × 78.6 mm
A single game flash card for Atari 2600, Atari 7800 and Atari 2600+
- Size
- 57.8 × 78.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 50
- Pads
- 165
- Tracks, vias
- 543, 111
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 2 Jan 2024
- Updated
- 22 Jan 2025
Overview
Otaku is an open-source printed circuit board by karrika, from the karrika/Otaku-flash repository on GitHub, published under the MIT licence. It is a 2-layer board of 57.8 × 78.6 mm with 12 parts on 50 nets, routed with 543 tracks and 111 vias.
Its parts include 7 resistors, 3 ICs, 1 diode and 1 connector. It belongs with the RP2040 boards of this library.
README
README.mdOtaku-flash
A single game flash card for Atari 2600, Atari 7800 and Atari 2600+
The logic in this card is based on Raspberrypi Pico
The startup of the Pico is too slow for a real Atari 7800. The way I run the game is by:
- inserting the card when the power is off
- then I connect a powerbank to Pico's USB socket
- finally I power on the console This allows the Pico to prepare everything before I power on my Atari 7800 console. The schottky diode in the cart prevents the powerbank to power on the console when the cart has power but the console has not.
The new Atari 2600+ does not have a startup problem. But the Otaku cart may draw too much current so I am also using the powerbank when the cart is in the 2600+.
The cart has a 2600 connector and a 7800 connector. The 7800 connector can be used for running all games. The 2600 connector only works for 2600 games.
Programming the cart:
- keep the button pressed while inserting the USB cable to the PC
- release the button
- drag a a game.uf2 file to the folder opened by the Otaku card
For converting a game into the uf2 format you need to install Raspberry Pico tools with the SDK kit.
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R3, R4 |
| 2 | 3.9k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5, R6 |
| 1 | 1N5711 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 1k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | Pico | Otaku:RPi_Pico_SMD_TH | U2 |
| 1 | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R7 |
| 1 | ~ | Otaku:A2600 | U3 |
| 1 | ~ | Otaku:A7800 | U1 |
Questions
How big is the Otaku PCB?
It measures 57.8 × 78.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Otaku use?
12 parts. 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 Otaku KiCad files?
From the karrika/Otaku-flash repository on GitHub, at the commit this page was made from: the board is Otaku/Otaku.kicad_pcb and its schematic Otaku/Otaku.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Otaku 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).
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