Shared Projects

Added reverse voltage protection diode.

Panasonic AXT524124

Panasonic AXT624124

M Series 50mhz OCXO Board

This is my first try (plus updates) at routing the short version of an MBC5 flashcart, there certainly wasn’t a lot of room! Here’s the git repo where I’ve notionally been tracking updates: github.com/nm3210/GB_Flashcarts

Heavily inspired by HDR’s updated MBC3 cart with clean borders and neat original/OEM features like the production date squares and (totally unnecessary) fiducial markings, as well as his own older short MBC5 cart.

Board features

- GameBoy_GamePak_AGB-002 template from github.com/djedditt/kicad-gamepaks (though I had to change all the rear shapes into netted pads)

- Schematic mostly from github.com/HDR/MBC5-Flashcart

- Date markings and fiducials directly from github.com/HDR/MBC3-Flashcart (though I tweaked the size a bit)

- Some labels done via github.com/gregdavill/KiBuzzard

- No traces connecting to the cart connector pins on the back side of the board, with a ground plane buffer - this seems to be a ‘feature’ on a lot of the OEM MBC3/MBC5 nintendo gameboy cartidges I’ve seen, though I don’t know why. This restricted the routing on the board quite a bit!

- No via tents on the back side just to give it some extra color

Bill of Materials

Note: need to order on Oshpark at their half-thick/double cu “2oz-0.8mm” service for it to actually fit in a cart slot

Changelog

- v1 around 2022-03-12

 First release, hoping for the best

- v2 around 2022-03-22

 Change from TSOP-40 to TSOP-48 to allow for more chip variants (including ones I bought of course)

 Fixed wrong corner marker on U1 (from lower-left to upper-right, specifically: the side with the WriteEnable pin should be facing south)

 Minor routing updates/cleanup

[SEE UPDATED v2 HERE: https://oshpark.com/shared_projects/A7b5nxHa]

This is my first try at routing the short version of an MBC5 flashcart, there certainly wasn’t a lot of room! Here’s the git repo where I’ve notionally been tracking updates: github.com/nm3210/GB_Flashcarts

Heavily inspired by HDR’s updated MBC3 cart with clean borders and neat original/OEM features like the production date squares and (totally unnecessary) fiducial markings, as well as his own older short MBC5 cart.

Board features

- GameBoy_GamePak_AGB-002 template from github.com/djedditt/kicad-gamepaks (though I had to change all the rear shapes into netted pads)

- Schematic mostly from github.com/HDR/MBC5-Flashcart

- Date markings and fiducials directly from github.com/HDR/MBC3-Flashcart (though I tweaked the size a bit)

- Some labels done via github.com/gregdavill/KiBuzzard

- No traces connecting to the cart connector pins on the back side of the board, with a ground plane buffer - this seems to be a ‘feature’ on a lot of the OEM MBC3/MBC5 nintendo gameboy cartidges I’ve seen, though I don’t know why. This restricted the routing on the board quite a bit!

- No via tents on the back side just to give it some extra color

Bill of Materials

Note: need to order on Oshpark at their half-thick/double cu “2oz-0.8mm” service for it to actually fit in a cart slot

Changelog

- v1 around 2022-03-12: First release, hoping for the best

A little board to replace the CIC on the original NES or OpenTendo, and restore reset functionality. All credit goes to Redherring32. https://github.com/Redherring32/NullCIC

Same as this board but with 2.54 mm pitch pins on both sides of the board for use with header pins and breadboards.

Same as this board but with 5 mm pitch pins on both sides of the board, for use with screw terminals.

Karabas-pro Rev.Ї PCB

https://github.com/andykarpov/karabas-pro

WARNING: All holes are metallized inside, so one or more pins among the 4 center ones may have shorts on the side where they don’t have pads. A simple way to remove these is to use a drill bit to slightly chamfer the corner of the hole.

Donate: PayPal.Me

Arduino connector for NASOdyssey project v2

Button board for NASOdyssey project v1

DIY, Arduino-based telescope focuser. See https://github.com/danb35/myFocuserPro-PCB and https://sourceforge.net/projects/arduinofocuscontrollerpro/

Custom board to replace corroded Game Boy Pocket button contacts or add tac switches. Recommend adding common cathode quad diode array for simplified wiring.

MUST ORDER AS FLEX FOR PROPER FIT IN SHELL

Recommended diode array: https://www.mouser.com/ProductDetail/755-FMN1T148

Recommended tac switches: https://www.mouser.com/ProductDetail/688-SKRRAA

Custom board to replace corroded Game Boy Pocket button contacts or add tac switches. Recommend adding common cathode duel diode array for simplified wiring.

MUST ORDER AS FLEX FOR PROPER FIT IN SHELL

Recommended diode array: https://www.mouser.com/ProductDetail/757-BAV70LM

Recommended tac switches: https://www.mouser.com/ProductDetail/688-SKRRAA

Custom board to replace corroded Game Boy Pocket button contacts. Recommend adding common cathode duel diode array for simplified wiring.

MUST ORDER AS FLEX FOR PROPER FIT IN SHELL

Recommended diode array: https://www.mouser.com/ProductDetail/757-BAV70LM