Mega frank u4
About the Mega frank u4 PCB
Mega frank u4 is an open source PCB design by evgs, published on GitHub. It is a 2-layer board measuring 149.9 × 99.5 mm, with 256 components from 89 distinct parts.
Other key parts include the MP1584EN-LF-Z, USBLC6-2SC6, AMS1117 3.3, TXS0104EDR and JFC95101. By type, the board carries 137 resistors, 53 capacitors, 21 ICs, 21 connectors, 9 switches and 6 diodes.
It belongs with the audio, test & measurement and retro computing designs in this gallery.
From the project
MegaFRANK is a hardware emulation platform built around the Raspberry Pi RP2350 (RP2350A QFN modules)
Please read detailed docs in original project FRANK repository
Main components on the Mega frank u4
Mega frank u4 bill of materials (BOM)
256 components, 89 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MP1584EN-LF-Z | SOIC-9_P1.27mm | U1 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U2 |
| 1 | AMS1117 3.3 | SOT-223-3_TabPin2 | U3 |
| 1 | TXS0104EDR | SOIC-14_P1.27mm | U4 |
| 2 | JFC95101 | DIP-40_W15.24mm_Socket | U5, U7 |
| 1 | 74HC74 | SOIC-14_P1.27mm | U6 |
| 2 | 74HC595 | SOP-16_P1.27mm | U8, U9 |
| 1 | DS3231MZ | SOIC-8_3.9x4.9mm_P1.27mm | U10 |
| 1 | DS2401P+ | TSOC-6 | U11 |
| 1 | ESP-PSRAM64 | SO-8 | U12 |
| 1 | MW7211A | SOP-16_P1.27mm | U13 |
| 1 | Pimoroni PGA2350 | PGA2350 | U14 |
| 2 | 74HC4052D,653 74HC4052D | SOP-16_P1.27mm | U15, U21 |
| 1 | ESP-01v090 | ESP-01S | U16 |
| 1 | CD4069UBM | SOIC-14_P1.27mm | U17 |
| 1 | TDA1387T | SO-8 | U18 |
| 1 | MAX232CSE+ PAM8403D | SOP-16_P1.27mm | U19 |
| 1 | LM358 | SO-8 | U20 |
| 1 | BC850 | SOT-23 | Q1 |
| 1 | 3.58 MHz | Crystal_HC49-S | X1 |
Show 69 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | UART | JST_SH_1x03_P1.00mm_Vertical | J1 |
| 1 | DEBUG | JST_SH_1x03_P1.00mm_Vertical | J2 |
| 1 | PWR | PinHeader_1x03_P2.54mm | J3 |
| 1 | Conn_02x20_Odd_Even | PinHeader_2x20_P2.54mm_Vertical | J4 |
| 1 | DC-005-5A-2.0 | BarrelJack_DC-005 | J5 |
| 1 | USB4215-03-A | USB_C_Receptacle | J6 |
| 1 | MDC-036 | MiniDIN_6pin_Female | J7 |
| 1 | BAT 3V | PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | DC3RX19JA2 | HDMI_Female | J9 |
| 1 | RCA-103 | BarrelJack_RCJ-012 | J10 |
| 1 | Pin Header 1x08 | JST_GH_1x08_P1.25mm | J11 |
| 2 | SJ1-3525N | AudioJack_3.5mm_SJ1-3525N | J12, J15 |
| 1 | PAM L | JST_GH_1x02_P1.25mm | J13 |
| 1 | PAM R | JST_GH_1x02_P1.25mm | J14 |
| 2 | GP2 | DSUB-9_Male_TopMount | J16, J17 |
| 1 | 104031-0811 | MicroSD_SMD_Long | J18 |
| 2 | SS-52100-004 | USB_A_Stacked | J19, J21 |
| 1 | VGA | DSUB-15_Female | J20 |
| 1 | 1174 Battery_CR1220 | Battery_CR1220 | H5 |
| 1 | DS01-254-S-06BE | DS01-254-S-06BE | S1 |
| 1 | KMR221G LFS RP BOOT | Button_SMD_3x4x2mm | S2 |
| 1 | RP BOOT | Button_SMD_TS1234VW | S3 |
| 2 | SK12D07VG3NS | Switch_Slide_SK12D07VG3NS | S4, S9 |
| 1 | KMR221G LFS RP Reset | Button_SMD_3x4x2mm | S5 |
| 1 | RP Reset | Button_SMD_TS1234VW | S6 |
| 1 | ESP Reset | Button_SMD_TS1234VW | S7 |
| 1 | KMR221G LFS TS Reset | Button_SMD_3x4x2mm | S8 |
| 1 | Green | LED_0805 | LD1 |
| 2 | Orange | LED_0805 | LD2, LD3 |
| 1 | Blue | LED_0805 | LD4 |
| 1 | 1N5822 | D_SMA | D1 |
| 2 | 1N4148 | D_SOD-323 | D2, D3 |
| 1 | 1N5819WS | D_SOD-323 | D4 |
| 2 | 3V3 | D_MiniMELF | D5, D6 |
| 1 | 22uH | Inductor_CDRH104RNP | L1 |
| 1 | 330R | C_0805_2012Metric | L2 |
| 1 | 680u | C_Radial_D8.0mm_P3.50mm | C1 |
| 14 | 10u | C_0805_2012Metric | C2, C7, C10, C33, C35, C37, C38, C39 +6 |
| 23 | 100n | C_0805_2012Metric | C3, C5, C6, C9, C11, C12, C13, C14 +15 |
| 1 | 150pF | R_0805_2012Metric | C4 |
| 2 | 220u | C_Radial_D6.3mm_P2.50mm | C8, C28 |
| 2 | 22p | C_0805_2012Metric | C15, C16 |
| 3 | 100u | C_Radial_D6.3mm_P2.50mm | C17, C19, C47 |
| 1 | 4.7u | C_0805_2012Metric | C26 |
| 2 | 47n | C_0805_2012Metric | C31, C32 |
| 3 | 1u | C_0805_2012Metric | C36, C41, C46 |
| 1 | 10u | CP_Radial_D4.0mm_P1.50mm | C42 |
| 16 | 1K | R_0805_2012Metric | R1, R2, R20, R21, R23, R28, R36, R37 +8 |
| 37 | 10K | R_0805_2012Metric | R3, R4, R5, R6, R7, R8, R29, R30 +29 |
| 6 | 100K | R_0805_2012Metric | R9, R11, R12, R22, R88, R89 |
| 1 | 24K | R_0805_2012Metric | R10 |
| 2 | 5.1K | R_0805_2012Metric | R13, R14 |
| 1 | 8.2K | R_0805_2012Metric | R15 |
| 1 | 1M | R_0805_2012Metric | R16 |
| 1 | 43K | R_0805_2012Metric | R17 |
| 10 | 22R | R_0805_2012Metric | R18, R19, R121, R122, R123, R124, R133, R134 +2 |
| 8 | 4.7K | R_0805_2012Metric | R24, R25, R38, R39, R60, R61, R62, R87 |
| 8 | 2K | R_0805_2012Metric | R26, R27, R40, R41, R91, R93, R94, R95 |
| 11 | 20K | R_0805_2012Metric | R42, R43, R45, R48, R50, R52, R54, R57 +3 |
| 2 | 120R | R_0805_2012Metric | R47, R55 |
| 14 | 270R | R_0805_2012Metric | R63, R64, R65, R66, R67, R68, R69, R70 +6 |
| 1 | 750R | R_0805_2012Metric | R73 |
| 1 | 300R | R_0805_2012Metric | R80 |
| 5 | 150R | R_0805_2012Metric | R81, R82, R83, R84, R85 |
| 1 | 51R | R_0805_2012Metric | R86 |
| 4 | 100R | R_0805_2012Metric | R98, R113, R131, R132 |
| 2 | 470R | R_0805_2012Metric | R99, R100 |
| 2 | 47K | R_0805_2012Metric | R110, R111 |
| 3 | 330R | R_0805_2012Metric | R125, R126, R127 |
Mega frank u4 design files
The KiCad project lives in the evgs/mega-frank-u4 repository on GitHub; these links point at the commit this page was built from.
- Layoutmegafrank.kicad_pcb
- Schematicmegafrank.kicad_sch
Mega frank u4: common questions
How big is the Mega frank u4 PCB?
The Mega frank u4 measures 149.9 × 99.5 mm, has 2 copper layers and is 1 mm thick.
How many components are on the Mega frank u4?
256 components, from 89 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mega frank u4 design files?
From the evgs/mega-frank-u4 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Mega frank u4 design in my own project?
The repository has no license, so all rights stay with evgs. Use it as a reference, and ask the author before reusing the design.
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