F7 v2 Assembly
NOTE: If you received a pre-assembled adapter then you can skip straight to Hardware Connection.
You should obtain (or have received) the following parts, in addition to the Greaseweazle PCB. Note that kits may include an excess quantity of the "passives" (resistors, capacitors).
| Board Reference | Footprint | Value/Type | Quantity |
|---|---|---|---|
| C1 | 0805 | 4.7uF | 1 |
| C2-C7,C10-C11,C13-C16 | 0603 | 100nF | 12 |
| C8-C9,C12 | 0805 | 1uF | 3 |
| C17-C18 | 0603 | 27pF | 2 |
| C19-C20 | 0805 | 10uF | 2 |
| R1-R2 | 0603 | 470R | 2 |
| R3-R6 | 0603 | 1k | 4 |
| U1 | LQFP64 | STM32F730R8 | 1 |
| U2 | SOT25 | AP2112K-3 | 1 |
| ACT,PWR | 0603 | LED | 2 |
| DEBUG | 7x1 | Pin Header | 1 |
| RESET, WRITE_INHIBIT | 2x1 | Pin Header | 2 |
| FLOPPY POWER | 4x1 | TE 171826-4 | 1 |
| FLOPPY DATA | 17x2 | Box Header | 1 |
| USB | USB-B | 1 | |
| X1 | HC-49/US | 8MHz | 1 |
Please note that the small size and pitch of some components, particularly U1, means that you will need some soldering proficiency, and equipment such as the following:
- A workbench with decent lighting
- Moderate magnification (eg. a magnifying bench light)
- Plenty of flux
- Tweezers
Although not a step-by-step guide, I will note some caveats.
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The kit comes with the STM32 chip placed in a fold of antistatic material, taped to the PCB. Be warned, the chip will be loose when you peel the tape!
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The kit-supplied LEDs are manufacturer codes HSMS-C190 and HSMY-C190. The cathode terminal is marked by a tiny dot, and should be oriented towards the right-hand side of the PCB. You can find the manufacturer datasheet here.
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You may wish to remove pin 5 and/or pin 3 from the FLOPPY DATA header. Some floppy-drive cables use one of these pins as an orientation key.
Thanks to George R. Mezzomo for the hardware layout and collaboration on schematic design. These designs may be freely reproduced: for example, in the manufacture of PCBs by your favourite board factory.