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ESP32 FamicomRomdumper

KK153402·ESP32_FamicomRomdumper·hardware/Famicom1.kicad_sch

ESP32 FamicomRomdumper

About the ESP32 FamicomRomdumper PCB

ESP32 FamicomRomdumper is an open source ESP32 PCB design by KK153402, published on GitHub. It is a board, with 77 components from 14 distinct parts.

Its main chip is the ESP32_DevModule, from the ESP32 family. Other key parts include the SN74AHCT595D, CD74HCT165M96, SN74AHCT244DWR and SN74LVC1T45DBVR. By type, the board carries 35 resistors, 15 capacitors, 13 ICs, 10 test points, 2 diodes and 1 connector.

From the project

ESP32と汎用ロジックICで作る、ファミコン（Family Computer）カセットのROM吸い出し機です。 吸い出したデータはiNES形式（.nes）で保存され、エミュレータ（Mesen等）でそのまま起動できます。

ESP32と汎用ロジックICで作る、ファミコン（Family Computer）カセットのROM吸い出し機です。 吸い出したデータはiNES形式（.nes）で保存され、エミュレータ（Mesen等）でそのまま起動できます。

A Famicom cartridge ROM dumper built with an ESP32 and standard 74-series logic. Dumps are saved in iNES format (.nes) and boot directly in emulators such as Mesen.

- ESP32 + シフトレジスタ構成：74HCT595 ×6 / 74HCT165 ×2 でカセットバス54本をGPIO 16本に圧縮 - 5V系ロジックを直接駆動：シフトレジスタを5Vで動かし、TTLしきい値（HCT/AHCT）で3.3V信号を受ける。大量のレベル変換ICが不要 - カセット保護：カセット電源（VCCCART）の独立遮断と、バス全体のHi-Z化（BUSENN） - ダンプの信頼性：2回読み出して一致を確認し、CRC32で転送エラーも検出 - 自動判定**：PRG容量（16 KB / 32 KB）とミラーリング（垂直 / 水平）

Main components on the ESP32 FamicomRomdumper

SN74AHCT595DCD74HCT165M96SN74AHCT244DWRSN74LVC1T45DBVRESP32_DevModule

ESP32 FamicomRomdumper bill of materials (BOM)

77 components, 14 distinct parts.

QtyPartRefs
6
SN74AHCT595D
U1, U2, U3, U4, U5, U6
2
CD74HCT165M96
U7, U8
1
SN74AHCT244DWR
U9
3
SN74LVC1T45DBVR
U10, U11, U12
1
ESP32_DevModule
U13
1
—
J1
1
SK-12D11VG3
SW1
10
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +2
2
LED
D1, D2
12
GRM188F11H104ZA01
C1, C2, C3, C4, C5, C6, C7, C8 +4
3
GRM31CB31H106KA12
C13, C14, C15
32
RK73B1JTTD103J
R1, R2, R3, R4, R5, R6, R7, R8 +24
2
RK73B1JTTD102J
R24, R25
1
RK73Z1JTTD
R35

ESP32 FamicomRomdumper design files

The KiCad project lives in the KK153402/ESP32_FamicomRomdumper repository on GitHub; these links point at the commit this page was built from.

ESP32 FamicomRomdumper: common questions

What microcontroller does the ESP32 FamicomRomdumper use?

The ESP32 FamicomRomdumper is built around the ESP32_DevModule, from the ESP32 family.

How many components are on the ESP32 FamicomRomdumper?

77 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP32 FamicomRomdumper design files?

From the KK153402/ESP32_FamicomRomdumper repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the ESP32 FamicomRomdumper design in my own project?

The repository has no license, so all rights stay with KK153402. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ESP32 FamicomRomdumper without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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