4 layers58.9 × 48.4 mm
Apppd
chithigun23/ANUFS-APPPD
An update to the Accelerator Pedal Position Plausibility Device to remain compliant with the use of a paddle shift system.
103 parts
4 layers23 × 51 mm
Memboard
DEV-ajthedj/memboardA custom development board aimed at maximizing the RAM of an RP2350A.
- Size
- 23 × 51 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 41
- Nets
- 57
- Pads
- 220
- Tracks, vias
- 718, 66
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 16 Apr 2026
- Updated
- 3 May 2026
Overview
Memboard is an open-source printed circuit board by DEV-ajthedj, from the DEV-ajthedj/memboard repository on GitHub. It is a 4-layer board of 23 × 51 mm with 41 parts on 57 nets, routed with 718 tracks and 66 vias.
It is built around the RP2354A, AP2112K-3.3 and PMEG2010BER. Its parts include 21 capacitors, 8 resistors, 4 connectors, 3 ICs and 2 switches. It belongs with the RP2350 boards of this library.
Main components
3
RP2354A
QFN-60(7x7)150MHz 32 Bit ARM Cortex-M33 Built-in+External Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、Built-in general-purpose timer、Integrated LDO、Calendar function、True random number generator (TRNG)、Hardware ECC check、Independent watchdog (IWDG) QFN-60(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
PMEG2010BER
SOD-123W1 Independent 1A 20V 450mV@1A 50A 50uA@20V SOD-123W Schottky Diodes ROHSNexperiaSchottky Diodes
README
README.mdmemboard
A custom development board aimed at maximizing the RAM of an RP2354A. I am doing this because I am currently developing a 3D graphics pipeline (very experimental) for microcontrollers, and an upgrade from the 264 KB Pico would be very nice for larger frambuffers and 3D objects. This is also why I didn't really need much flash on the board, so I just went with the RP2354A, which has 2MB of flash already built in. This project is meant for me to be able to really start developing and testing my pipeline more, without being limited by memory.
Future Improvements
In the future, I hope to make firmware to make this microcontroller stackable. This could (hopefully) substantially increase the maximum compute it could generate.
Preview
Routing
Schematic
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C6, C7, C8, C9, C10, C22, C23 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C13, C14 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R5, R7 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C24 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R9, R10 |
| 2 | 33pF | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C18, C21 |
| 2 | 4.7uf | Capacitor_SMD:C_0603_1608Metric | C19, C20 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | Conn_01x20_Pin | Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_Vertical | J2, J3 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 12 MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 3.3uH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | APS6404L-3SQRx-ZR | Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | U4 |
| 1 | Conn_01x03_Socket | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J4 |
| 1 | PMEG2010BER | Diode_SMD:Nexperia_CFP3_SOD-123W | D1 |
| 1 | RP2354A | Package_DFN_QFN:QFN-60-1EP_7x7mm_P0.4mm_EP3.4x3.4mm | U3 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
Questions
How big is the Memboard PCB?
It measures 23 × 51 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Memboard use?
41 parts, built around the RP2354A, AP2112K-3.3 and PMEG2010BER. 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 Memboard KiCad files?
From the DEV-ajthedj/memboard repository on GitHub, at the commit this page was made from: the board is memboard.kicad_pcb and its schematic memboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Memboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask DEV-ajthedj before reusing the design.
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