6 layers90 × 45 mm
Hw tele stern
shorlee/TeleSTERN
The TeleSTERN Project is an Open Source Rocketry Flight Computer based on the TeleMega by Altus Metrum.
303 parts3GPL-3.0
2 layers25 × 45 mm
OmegaFloppy
fastjack/OmegaFloppyThe last floppy adapter you'll ever need
- Size
- 25 × 45 mm
- Copper layers
- 2
- Thickness
- 0.19 mm
- Parts
- 27
- Nets
- 43
- Pads
- 133
- Tracks, vias
- 285, 42
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.99 (file 20260901)
- Created
- 16 Sep 2026
- Updated
- 18 Sep 2026
Overview
OmegaFloppy is an open-source printed circuit board by fastjack, from the fastjack/OmegaFloppy repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 25 × 45 mm with 27 parts on 43 nets, routed with 285 tracks and 42 vias.
It is built around the ATMEGA32U2-MU, TPD2EUSB30ADRTR and RN73R1ETTP1003B25, with the RK73H1ETTP22R0F, RN73R1ETTP2200F50 and RN73R1ETTP1002B25 among its other parts. Its parts include 12 resistors, 4 capacitors, 3 ICs, 3 connectors and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
9
ATMEGA32U2-MU
VQFN-32-EP(5x5)-40℃~+85℃ 16MHz 1KB 1KB 2.7V~5.5V 22 32KB 8 Bit AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer VQFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
TPD2EUSB30ADRTR
SOT(9x3)0.45pF 100nA 14V 3.3V 4.5V ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional SOT(9x3) ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
RN73R1ETTP1003B25
0402-55℃~+155℃ 100kΩ 63mW Thin Film Resistor ±0.1% ±25ppm/℃ 0402 Chip Resistor - Surface Mount ROHSKOA Speer ElectronicsChip Resistor - Surface MountRK73H1ETTP22R0F
0402-55℃~+155℃ 100mW 22Ω 75V Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSKOA Speer ElectronicsChip Resistor - Surface MountRN73R1ETTP2200F50
0402-55℃~+155℃ 220Ω 50V 63mW Thin Film Resistor ±1% ±50ppm/℃ 0402 Chip Resistor - Surface Mount ROHSKOA Speer ElectronicsChip Resistor - Surface MountRN73R1ETTP1002B25
0402-55℃~+155℃ 10kΩ 62.5mW Thin Film Resistor ±0.1% ±25ppm/℃ 0402 Chip Resistor - Surface Mount ROHSKOA Speer ElectronicsChip Resistor - Surface Mount
SX3M16.000A10F20TNN
SMD3225-4PCrystal OscillatorsShenzhen SCTF Elec
IN-S42DS5G
0402145° 2.7V 522nm 529nm 5mA 71.5mcd Emerald Green 0402 LED Indication - Discrete ROHSInoluxLED Indication - Discrete10155435-00011LF
插件-25℃~+85℃ 1 3A、5A 5V Female Surface Mount, Right Angle Type-C 插件 USB Connectors ROHSAmphenolUSB Connectors
README
README.mdΩFloppy
A modernized version of XUM1541 with USB-C. Based on the design of the ZoomFloppy but stripped of all the "weird" connectors.
Images
Yes, I am aware that the two pins of the DIN connector do not line up with the footprint. This is a problem with Lumberg's CAD model (I contacted them about it). I have verified the footprint with the real connector.
WARNING!
This PCB is still untested. First PCBs have been ordered.
This KiCAD project was created with a nightly build of KiCAD 10.99. The current release of KiCAD 10 (Version 10.0.6 as of this writing) will most certainly not open the project.
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100 k | Resistor_SMD:R_0402_1005Metric | R7, R8, R9, R10, R11 |
| 4 | 10 u | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4 |
| 2 | 22 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 220 | Resistor_SMD:R_0402_1005Metric | R5, R12 |
| 2 | 5.1 k | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 1 | 10 k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 16 MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 74LS06 | Package_SO:SSOP-14_5.3x6.2mm_P0.65mm | U2 |
| 1 | ATmega32U2-M | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm | U1 |
| 1 | AVR-ISP-6 | AVRISP_Pogo:AVRISP_Pogo | J3 |
| 1 | Activity (red) | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | DIN-6 | Connector_DIN:DIN45322 | J1 |
| 1 | Power (green) | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | TPD2EUSB30 | Package_TO_SOT_SMD:Texas_DRT-3 | U3 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:AMPHENOL_10155435-00011LF | J2 |
The 25 most common of 27 parts.
Questions
How big is the OmegaFloppy PCB?
It measures 25 × 45 mm and has 2 copper layers, 0.19 mm thick.
What parts does the OmegaFloppy use?
27 parts, built around the ATMEGA32U2-MU, TPD2EUSB30ADRTR, RN73R1ETTP1003B25 and RK73H1ETTP22R0F. 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 OmegaFloppy KiCad files?
From the fastjack/OmegaFloppy repository on GitHub, at the commit this page was made from: the board is OmegaFloppy.kicad_pcb and its schematic OmegaFloppy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the OmegaFloppy design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 8 layers90 × 60 mm
- 2 layers216 × 70.8 mm
Choc40
rainkeebs/Choc40
40% Low profile keyboard designed for Kailh 'Choc' v1 switches and MBK Extended keycaps.
98 parts15Unlicense - 2 layers68.3 × 49.2 mm
- 2 layers44.5 × 46.9 mm
- 2 layers81.9 × 126.7 mm
- 2 layers38.1 × 25.4 mm
Binarykb
bennettzug/binarykb
simple 2 key macropad with USB-C connector and hotswappable switches
18 partsMIT - 2 layers19.1 × 23.3 mm
