HardLabs

Frank core2u

rh1tech·frank·hardware/frank_core2u/frank_core2u.kicad_pcb

Frank core2u PCB layout, top view — open source RP2040/RP2350 board by rh1tech

About the Frank core2u PCB

Frank core2u is an open source RP2040/RP2350 PCB design by rh1tech, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 67 × 55 mm, with 146 components from 52 distinct parts.

Its main chip is the RP2350B, from the RP2040/RP2350 family. Other key parts include the W25Q128JVPIQ, ESP-PSRAM64H, RP2350, LM358 and TDA1387T. By type, the board carries 59 capacitors, 44 resistors, 14 ICs, 12 connectors, 5 switches and 4 inductors.

It belongs with the retro computing designs in this gallery.

From the project

RP2350 Based Hardware Emulation Platform

FRANK is a hardware emulation platform built around the Raspberry Pi RP2350 (Pico 2 modules and RP2350A QFN). RP2040 / Pico still works in FRANK's socket, but in practice only a handful of firmware (mainly the older ZX Spectrum cores) still targets RP2040. Everything modern (IBM PC, NES, SNES, Genesis, the DOOM / id Tech 1 ports, FRANK OS, and so on) is RP2350-only.

Frank core2u, from the project README
From the project README

Main components on the Frank core2u

W25Q128JVPIQESP-PSRAM64HRP2350BRP2350LM358TDA1387TUSBLC6-2SC6AMS1117-3.3MW7211ACD4069UBMTS3USB221RSER

Frank core2u bill of materials (BOM)

146 components, 52 distinct parts.

QtyPartRefs
2
W25Q128JVPIQ
U1, U4
2
ESP-PSRAM64H
U2, U5
1
RP2350B
U3
1
RP2350
U6
1
LM358
U7
1
TDA1387T
U8
2
USBLC6-2SC6
U9, U11
1
AMS1117-3.3
U10
1
MW7211A
U12
1
CD4069UBM
U13
1
TS3USB221RSER
U14
1
ASE-12MHz
Y1
1
ASE-12MHz
Y2
2
Debug
J1, J3
2
UART
J2, J4
1
DC3RX19JA2
J5
1
PJ-320D
J6
1
104031-0811
J7
2
676430910
J8, J10
2
USB4215-03-A
J9, J11
Show 32 more
QtyPartRefs
1
PJ-320D
J12
2
KMR221G LFS
RP Boot
S1, S3
2
KMR221G LFS
RP Reset
S2, S4
1
SK12D07VG3NS
SS12D00
S5
1
WS2812B-2020
LD1
1
Blue
LD2
1
Green
LD3
2
1N5819WS
D1, D2
1
SS34
D3
1
3.3u
L1
1
3.3u
L2
2
330R
L3, L4
38
100n
C1, C2, C3, C6, C9, C10, C11, C12 +30
9
4.7u
C4, C5, C7, C8, C23, C24, C26, C27 +1
7
10u
C37, C38, C39, C41, C42, C44, C46
1
10u
C40
2
22u
C51, C53
2
100nF
C57, C58
4
33R
R1, R2, R6, R15
12
10K
R3, R4, R5, R12, R13, R20, R21, R22 +4
4
1K
R7, R16, R19, R36
2
0R
R8, R14
4
27R
R9, R10, R17, R18
1
330R
R11
2
47K
R26, R27
2
20K
R28, R29
2
100R
R30, R31
2
470R
R32, R33
4
5.1K
R34, R35, R37, R38
1
4.7K
R39
2
100K
R40, R41
2
270R
RN1, RN2

Frank core2u design files

The KiCad project lives in the rh1tech/frank repository on GitHub; these links point at the commit this page was built from.

Frank core2u: common questions

What microcontroller does the Frank core2u use?

The Frank core2u is built around the RP2350B, from the RP2040/RP2350 family.

How big is the Frank core2u PCB?

The Frank core2u measures 67 × 55 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Frank core2u?

146 components, from 52 distinct parts. The full bill of materials is listed on this page.

Where can I download the Frank core2u design files?

From the rh1tech/frank repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Frank core2u design in my own project?

Yes, under the terms of its GPL-3.0 license, which rh1tech chose for the repository.

Can I test firmware for the Frank core2u without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

More boards in frank

Similar boards