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Mini USB Edge Flash Floppy

Board-Folk·flash-floppy-drives·MiniUSBEdgeFF/MiniUSBEdgeFF.kicad_pcb

Mini USB Edge Flash Floppy PCB layout, top view — open source STM32 board by Board-Folk

About the Mini USB Edge Flash Floppy PCB

Mini USB Edge Flash Floppy is an open source STM32 PCB design by Board-Folk, published on GitHub. It is a 2-layer board measuring 82.6 × 80.8 mm, with 39 components from 12 distinct parts.

Its main chip is the STM32F105R, from the STM32 family. Other key parts include the AMS1117-3.3 and 74LS07. By type, the board carries 23 resistors, 11 capacitors, 3 ICs, 1 crystal and 1 connector.

From the project

Multiple hardware projects that use the Flash Floppy firmware by Kier Fraser for various systems

They all use the STM32F4105 Microcontroller, Mainly SD Card and Side Scroll Wheel.

https://github.com/keirf/flashfloppy/wiki/Firmware-Programming#stm32-method-2-serial-programming

which requires a USB-TTL adapter, and using the stm32flash on mac.

Front USB Programming wont be available on some of the PCB's as well there isnt one, so has to be done via the TTL Serial connection to the STM32.

Main components on the Mini USB Edge Flash Floppy

STM32F105RAMS1117-3.374LS07

Mini USB Edge Flash Floppy bill of materials (BOM)

39 components, 12 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F105R
U1400
1
AMS1117-3.3
U1401
1
74LS07
U1402
1
8MHZ
8MHz
Y1401
1
C2798029
USB
J1402
8
100NF
100nF
C1400, C1405, C1406, C1407, C1408, C1409, C1410, C1411
2
20PF
20pF
C1401, C1402
1
10UF
10uF
C1403
1
4K7
R1400
19
1K
R1401, R1404, R1405, R1406, R1412, R1413, R1414, R1415 +11
2
22R
R1402, R1403
1
10K
R1407

Mini USB Edge Flash Floppy design files

The KiCad project lives in the Board-Folk/flash-floppy-drives repository on GitHub; these links point at the commit this page was built from.

Mini USB Edge Flash Floppy: common questions

What microcontroller does the Mini USB Edge Flash Floppy use?

The Mini USB Edge Flash Floppy is built around the STM32F105R, from the STM32 family.

How big is the Mini USB Edge Flash Floppy PCB?

The Mini USB Edge Flash Floppy measures 82.6 × 80.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mini USB Edge Flash Floppy?

39 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Mini USB Edge Flash Floppy design files?

From the Board-Folk/flash-floppy-drives repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Mini USB Edge Flash Floppy design in my own project?

The repository has no license, so all rights stay with Board-Folk. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Mini USB Edge Flash Floppy without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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