Frank next
About the Frank next PCB
Frank next 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 99 × 54 mm, with 245 components from 80 distinct parts.
Its main chip is the RP2350B, from the RP2040/RP2350 family. Other key parts include the APS6404L-3SQR-ZR, W25Q128JVPIQ, RP2350, TLV320DAC3100IRHBR and XC6206P182MR-G. By type, the board carries 101 capacitors, 72 resistors, 27 ICs, 14 connectors, 8 switches and 6 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.
Main components on the Frank next
Frank next bill of materials (BOM)
245 components, 80 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | APS6404L-3SQR-ZR | PSON50P200X300X50-9N | U1, U6 |
| 2 | W25Q128JVPIQ | WSON-8-1EP_6x5mm_P1.27mm_EP3.45x4.35mm | U2, U4 |
| 1 | RP2350B | RP2350-QFN-80_10x10_P0.4mm | U3 |
| 1 | RP2350 | QFN-60-1EP_7x7mm_P0.4mm_EP3.4x3.4mm | U5 |
| 1 | TLV320DAC3100IRHBR | TLV320DAC3100IRHBR | U7 |
| 1 | XC6206P182MR-G | XC6206P182MR-G | U8 |
| 1 | ESP8266EX | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U9 |
| 1 | W25Q16JVSSIQ | SOIC-8 | U10 |
| 1 | DS3231MZ | SO-8_3.9x4.9mm_P1.27mm | U11 |
| 2 | TS3USB221RSER | UQFN-10 | U12, U17 |
| 5 | TPD4S012DRYR | TPD4S012DRYR | U13, U14, U21, U23, U25 |
| 1 | TPS2116DRL | SOT-583-8 | U15 |
| 1 | AO3401A | SOT-23-3L_AOS | U16 |
| 1 | SY8089AAAC | SOT-23-5 | U18 |
| 1 | CH334F | QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U19 |
| 1 | CH343P | WCH_QFN-16-1EP_3x3mm_P0.5mm_EP1.8x1.8mm | U20 |
| 3 | CH217K | SOT-23-6 | U22, U24, U27 |
| 1 | 74HC4052BQ,115 74HC4052BQ | 74HC4052BQ115 | U26 |
| 1 | UMH3N | SOT-363 | Q1 |
| 2 | BC850 | SOT-23 | Q2, Q3 |
Show 60 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 12 MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y2, Y4 |
| 1 | 26 MHz Passive | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y3 |
| 2 | Debug | JST_SH_1x03_P1.00mm_Vertical | J1, J4 |
| 2 | UART | JST_SH_1x03_P1.00mm_Vertical | J2, J5 |
| 1 | DC3RX19JA2 | HDMI_Female | J3 |
| 1 | 104031-0811 | MicroSD_SMD_Long | J6 |
| 1 | PJ-320D | AudioJack_3.5mm_PJ320D_AudioOut | J7 |
| 1 | Speaker | JST_GH_1x02_P1.25mm | J8 |
| 1 | PJ-320D | AudioJack_3.5mm_PJ320D_TapeIn | J9 |
| 2 | USB4215-03-A | USB_C_Receptacle | J10, J11 |
| 3 | 676430910 | USB_A_Short | J12, J13, J14 |
| 1 | Antenna_Shield | Antenna_2.4GHz | AE1 |
| 1 | 1174 CR1220 | Battery_CR1220 | BT1 |
| 1 | DS05-127-2-02BK-SMT-TR | SW_DS05-127-2-02BK-SMT-TR | JP2 |
| 2 | KMR221G LFS RP Boot | Button_SMD_3x4x2mm | S1, S3 |
| 2 | KMR221G LFS RP Reset | Button_SMD_3x4x2mm | S2, S4 |
| 1 | ESP Reset | Button_SMD_3x4x2mm | S5 |
| 1 | KMR221G LFS ESP Flash | Button_SMD_3x4x2mm | S6 |
| 1 | SK12D07VG3NS SS12D00 | Switch_Slide_SS12D00 | S7 |
| 1 | SK12D07VG3NS | Switch_Slide_SK12D07VG3NS_PWR | S8 |
| 1 | Blue | LED_0603_1608Metric | LD1 |
| 1 | WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | LD2 |
| 1 | Green | LED_0603_1608Metric | LD3 |
| 1 | Orange | LED_0603_1608Metric | LD4 |
| 2 | 1N5819WS | D_SOD-323 | D1, D2 |
| 1 | 1N4148 | D_SOD-323 | D3 |
| 2 | 3.3µH | L_AOTA-B201610_2.0x1.6mm | L1, L2 |
| 2 | 330R 2A | L_0805_2012Metric | L3, L5 |
| 1 | 3nH | L_0603_1608Metric | L4 |
| 1 | 2.2uH | L_Cenker_CKCS3015 | L6 |
| 56 | 100nF | C_0603_1608Metric | C1, C2, C7, C10, C11, C12, C13, C14 +48 |
| 8 | 4.7uF | C_0603_1608Metric | C3, C4, C8, C9, C22, C25, C27, C28 |
| 4 | 15pF | C_0603_1608Metric | C5, C6, C23, C24 |
| 16 | 10uF | C_0603_1608Metric | C39, C45, C47, C48, C76, C77, C78, C80 +8 |
| 2 | 100uF | C_1206_3216Metric | C43, C44 |
| 3 | 1uF | C_0603_1608Metric | C51, C52, C85 |
| 1 | 1u | C_0603_1608Metric | C53 |
| 1 | 1.5pF | C_0603_1608Metric | C54 |
| 1 | 2.4pF | C_0603_1608Metric | C55 |
| 2 | 15p | C_0603_1608Metric | C57, C58 |
| 1 | 10u | C_0603_1608Metric | C59 |
| 1 | 100n | C_0603_1608Metric | C60 |
| 2 | 100uF | CP_Elec_6.3x6.0 | C72, C73 |
| 2 | 12pF | C_0603_1608Metric | C89, C90 |
| 1 | 22pF | C_0603_1608Metric | C91 |
| 4 | 33R | R_0603_1608Metric | R1, R3, R6, R20 |
| 23 | 10K | R_0603_1608Metric | R2, R4, R5, R18, R23, R28, R29, R30 +15 |
| 9 | 1K | R_0603_1608Metric | R7, R9, R19, R21, R26, R48, R57, R60 +1 |
| 2 | 0R | R_0603_1608Metric | R8, R22 |
| 5 | 100R | R_0603_1608Metric | R10, R11, R12, R13, R44 |
| 4 | 27R | R_0603_1608Metric | R14, R15, R24, R25 |
| 5 | 330R | R_0603_1608Metric | R16, R17, R27, R39, R40 |
| 3 | 4.7K | R_0603_1608Metric | R33, R34, R61 |
| 2 | 12K | R_0603_1608Metric | R36, R37 |
| 4 | 5.1K | R_0603_1608Metric | R50, R51, R52, R53 |
| 1 | 300K | R_0603_1608Metric | R54 |
| 6 | 100K | R_0603_1608Metric | R55, R58, R62, R65, R66, R70 |
| 1 | 1M | R_0603_1608Metric | R56 |
| 1 | 22K | R_0603_1608Metric | R63 |
| 2 | 270R | R_Array_4x0603 | RN1, RN2 |
Frank next 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 next: common questions
What microcontroller does the Frank next use?
The Frank next is built around the RP2350B, from the RP2040/RP2350 family.
How big is the Frank next PCB?
The Frank next measures 99 × 54 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Frank next?
245 components, from 80 distinct parts. The full bill of materials is listed on this page.
Where can I download the Frank next 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 next 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 next 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.
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