4 layers82.7 × 55.1 mm
MelonLORD
RoseDaggerDev/GBAWii3-Boards
PCBs for the GBAWii3 (GBAdWiince v3) project. It included MelonLORD, EastECHO, and GhostPAW.
74 parts
4 layers55.2 × 67.5 mm
EastECHO
RoseDaggerDev/GBAWii3-BoardsPCBs for the GBAWii3 (GBAdWiince v3) project. It included MelonLORD, EastECHO, and GhostPAW.
- Size
- 55.2 × 67.5 mm
- Copper layers
- 4
- Thickness
- 0.6 mm
- Parts
- 74
- Nets
- 83
- Pads
- 274
- Tracks, vias
- 657, 466
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Sep 2025
- Updated
- 9 Sep 2025
Overview
EastECHO is an open-source printed circuit board by RoseDaggerDev, from the RoseDaggerDev/GBAWii3-Boards repository on GitHub. It is a 4-layer board of 55.2 × 67.5 mm with 74 parts on 83 nets, routed with 657 tracks and 466 vias.
It is built around the TPS22995RZFR, TXU0104RUTR and TL3315NF100Q, with the S8421-45R among its other parts. Its parts include 17 capacitors, 7 ICs, 5 switches, 4 resistors and 4 connectors. It belongs with the interfaces and adapters boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
4
TPS22995RZFR
WQFN-6(1.3x0.9)-40℃~+125℃ 1 18mΩ 3.8A 400mV~5.5V Active High Load Switch Over Temperature Protection WQFN-6(1.3x0.9) Power Distribution Switches ROHSTexas InstrumentsPower Distribution Switches
TXU0104RUTR
UQFN-12(1.7x2)-40℃~+125℃ 1 1.08V~5.5V 1.08V~5.5V 200Mbps 4 Level translator Power-off protection、Output enable high-impedance、Integrated pull-up resistor SPI、JTAG、UART Tri-State Unidirectional UQFN-12(1.7x2) Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
TL3315NF100Q
SMD-4P,4.5x4.5mm-20℃~+70℃ 0.55mm 15V 1N 4.5mm 4.5mm 50mA Gull Wing Round Button SPST Surface Mount,Vertical SMD-4P,4.5x4.5mm Tactile Switches ROHSE-SwitchTactile Switches
S8421-45R
SMDSMD Button And Strip Battery Connector ROHSHarwinButton And Strip Battery Connector
README
README.mdGBAWii3-Boards (GBAdWiince V3)
This project includes 3 boards specifically designed for the GBAWii3 handheld Wii project. A portable Nintendo Wii built into a Game Boy Advance–style shell.
It includes:
- MelonLORD is a connector board. It connects directly to the ThunderKILL for power, then distributes that power and signal lines between EastECHO and GhostPAW. It houses the MelonHD by YveltalGriffin for HDMI to USB C DP alt mode. Along with an HDMI MUX for switching between internal and external displays, the USB C port for charging and display out, and the microSD card slot with SD to USB adapter.
- EastECHO provides a backplane for the right side controller buttons and joystick. It also houses the Wii’s MX chip, clock battery, and an audio interface based on Scampi by YveltalGriffin. It is connected to MelonLORD and the RainbowBRIDGE.
- GhostPAW provides the backplane for the left side controller buttons and joystick. It also houses the Wii Bluetooth module and a GameCube controller chip based on GCPlus-2.0 by Aurelio92. It is connected to the ThunderKILL and MelonLORD.
Purpose:
The GBAWii3-Boards project provides the custom PCBs used in the GBAWii3 handheld, a portable Wii built inside a Game Boy Advance styled shell. The three boards (MelonLORD, EastECHO, and GhostPAW) demonstrate system-level PCB design, integrating power management, video routing, audio, controller input, and console subsystems into a compact handheld form factor. While these boards are not intended as standalone hardware, they highlight skills in multi-board design, modular interconnects, and adapting open-source components (e.g. MelonHD, Scampi, GCPlus-2.0) into a unified portable system.
ToDo:
- Final design pass on the boards
- Send PCBs for fabrication
- Solder components
- Test with the Wii
- Final assembly of GBAWii3
FINAL NOTE: MelonLORD, EastECHO and GhostPAW are still in the prototype phase and untested. PCB manufacturing is not recommended until development and testing are complete.
(This github page is still WIP, and will change as the project continues)
Screenshots
GBAWii3
MelonLORD
EastECHO
GhostPAW
Credits
MelonLORD hardware designed by RoseDaggerDev
EastECHO hardware designed by RoseDaggerDev
GhostPAW hardware designed by RoseDaggerDev
License
MelonLORD, EchoEAST and GhostPAW hardware is licensed under Solderpad Hardware License v2.1.
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | LOGO | LOGO | G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** |
| 9 | 0.1µF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C5, C8, C9, C10, C11, C12, C18 |
| 8 | TestPoint | RoseDaggerDev:TestPoint_Pad_3x1.0mm | TP2, TP3, TP5, TP10, TP34, TP35, TP36, TP37 |
| 5 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H2, H3, H4, H5, H6 |
| 4 | TL3315NF100Q | SamacSys_Parts:TL3315NF100Q | S1, S2, S3, S4 |
| 2 | 100n | Capacitor_SMD:C_0402_1005Metric | C6, C7 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 47µF | Capacitor_SMD:C_0603_1608Metric | C14, C15 |
| 2 | 4p | Capacitor_SMD:C_0402_1005Metric | C1, C4 |
| 1 | 10µF | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 18 | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 3.3V | TestPoint:TestPoint_Pad_D1.0mm | TP27 |
| 1 | 32.768k | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y1 |
| 1 | 505110-1092 | SamacSys_Parts:5051101092 | J2 |
| 1 | 505110-1492 | SamacSys_Parts:5051101492 | J5 |
| 1 | 74LVC1G04GM,115 | SamacSys_Parts:PESD3V3L5UF115 | IC6 |
| 1 | ATTINY1616-MNR | Package_DFN_QFN:VQFN-20-1EP_3x3mm_P0.4mm_EP1.7x1.7mm | U4 |
| 1 | C_Small | Capacitor_SMD:C_0402_1005Metric | C19 |
| 1 | Conn_01x05_Socket | SamacSys_Parts:5051100592 | J1 |
| 1 | D_Small | Diode_SMD:D_0603_1608Metric | D1 |
| 1 | GC_Two_State_Switch | RoseDaggerDev:GC_Two_state_switch | SW1 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP30 |
| 1 | KSC441V2 70SH SPDELTA LFS | footprints:SW3_KSC441V2 | U6 |
| 1 | LED | LED_THT:LED_D1.8mm_W1.8mm_H2.4mm_Horizontal_O1.27mm_Z8.2mm | D2 |
| 1 | R_Potentiometer | RoseDaggerDev:B103_Potentiometer | RV2 |
| 1 | R_Small | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | S8421-45R | RoseDaggerDev:HARWIN_S8421-45R | J3 |
| 1 | SJ3-35094A | SamacSys_Parts:SJ335094A | H1 |
| 1 | SPKL- | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | SPKR+ | TestPoint:TestPoint_Pad_D1.0mm | TP16 |
| 1 | SPKR- | TestPoint:TestPoint_Pad_D1.0mm | TP15 |
| 1 | TLV320AIC3100 | Package_DFN_QFN:VQFN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm | U3 |
| 1 | TPS22995RZFR | SamacSys_Parts:TPS22995RZFR | IC9 |
| 1 | TXU0104RUTR | SamacSys_Parts:TXU0104RUTR | U1 |
| 1 | UPDI | TestPoint:TestPoint_Pad_D1.0mm | TP28 |
| 1 | ~ | RoseDaggerDev:MX_CHIP | U5 |
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Questions
How big is the EastECHO PCB?
It measures 55.2 × 67.5 mm and has 4 copper layers, 0.6 mm thick.
What parts does the EastECHO use?
74 parts, built around the TPS22995RZFR, TXU0104RUTR, TL3315NF100Q and S8421-45R. 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 EastECHO KiCad files?
From the RoseDaggerDev/GBAWii3-Boards repository on GitHub, at the commit this page was made from: the board is EastECHO/KiCad/EastECHO.kicad_pcb and its schematic EastECHO/KiCad/EastECHO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EastECHO design in my own project?
Its repository states no licence, so its author keeps all rights: ask RoseDaggerDev before reusing the design.