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MIG Dumper

sabogalc·MIG-Flash-PCBs·KiCad Projects/MIG Dumper/MIG Dumper.kicad_pcb

MIG Dumper PCB layout, top view — open source ESP32 board by sabogalc

About the MIG Dumper PCB

MIG Dumper is an open source ESP32 PCB design by sabogalc, published on GitHub under the WTFPL license. It is a 4-layer board measuring 60 × 33 mm, with 71 components from 32 distinct parts.

Its main chip is the ESP32-S2, from the ESP32 family. Other key parts include the ICE40UP5K-SG48ITR, GL823K-HCY04 and MAX20022ATIA+. By type, the board carries 45 capacitors, 13 resistors, 4 ICs, 4 inductors, 3 connectors and 1 crystal.

From the project

MIG Dumper and Flashcart PCB files in KiCad

Additionally, the SD card to USB adapter chip and the cartridge reader are not present in the BOMs because neither part is available on Digikey or Mouser, but you can purchase both of them from AliExpress.

While it may be possible to break this encryption (see here), I am a hardware engineer and not very interested in delving into the firmware side of things. However, I will include a schematic for a programmer board below should anyone want to embark on that journey. The instructions for the boot sequence needed are found at…

MIG Dumper, from the project README
From the project README

Main components on the MIG Dumper

ESP32-S2ICE40UP5K-SG48ITRGL823K-HCY04MAX20022ATIA+

MIG Dumper bill of materials (BOM)

71 components, 32 distinct parts.

QtyPartRefs
1
ESP32-S2
U1
1
ICE40UP5K-SG48ITR
U2
1
GL823K-HCY04
U3
1
MAX20022ATIA+
U4
1
ECS-400-10-37B2-CKY-TR
Y1
1
USB_C_Receptacle_USB2.0_16P
J1
1
Conn_02x04_Counter_Clockwise
J2
1
Conn_01x17_MountingPin
J3
1
APT3216LSECK/J3-PRV
D1
4
LQM21PN1R5MEHD
L1, L2, L3, L4
2
DNP
C1, C7
5
DNP
C2, C40, C41, C42, C43
2
10p
C3, C4
4
10u
C5, C24, C35, C38
2
8u2
C6, C25
7
110n
C8, C10, C15, C17, C18, C19, C34
10
1u
C9, C11, C12, C13, C14, C16, C20, C21 +2
6
2u2
C22, C23, C30, C31, C32, C33
2
15p
C26, C36
1
19p
C27
Show 12 more
QtyPartRefs
1
4u5
C29
1
75p
C39
2
DNP
C44, C45
2
10k
R1, R10
3
24k3
R2, R3, R12
2
5k1
R4, R7
1
56k
R5
1
19k6
R6
1
20k
R8
1
36k5
R9
1
330R
R11
1
100k
R13

MIG Dumper design files

The KiCad project lives in the sabogalc/MIG-Flash-PCBs repository on GitHub; these links point at the commit this page was built from.

MIG Dumper: common questions

What microcontroller does the MIG Dumper use?

The MIG Dumper is built around the ESP32-S2, from the ESP32 family.

How big is the MIG Dumper PCB?

The MIG Dumper measures 60 × 33 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the MIG Dumper?

71 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the MIG Dumper design files?

From the sabogalc/MIG-Flash-PCBs repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MIG Dumper design in my own project?

Yes, under the terms of its WTFPL license, which sabogalc chose for the repository.

Can I test firmware for the MIG Dumper 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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