F7 Lightning Assembly

NOTE: If you received a pre-assembled adapter then you can skip straight to Hardware Setup.

• Parts List
• Assembly Guidance
• Firmware Programming

Parts List

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,C4,C12	0805	10uF	3
C2-C3,C14,C25	0805	1uF	4
C5-C6,C8,C10,C13,C15-C24,C26-C28	0603	100nF	18
C7,C9,C11	0805	2.2uF	3
C29-C30	0603	27pF	2
R1-R2	0603	470R	2
R3	0603	3k0	1
R4,R8-R11	0603	1k0	5
R5-R7	CAY16	10k	3
U1	LQFP144	STM32F730Z8	1
U2	SOT23-6L	USBLC6-2SC6	1
U3-U4	SOIC-14	74LS07	2
U5	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	16MHz	1

Assembly Guidance

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)
• Good quality leaded (60/40) solder (eg. Stannol, Kester)
  • Avoid lead-free solder!
• Plenty of flux
• Tweezers

Although not a step-by-step guide, I will note some caveats.

1. 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!

2. 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.

3. 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.

4. The 10k resistor arrays are a little tight on their pads. Be careful that they are correctly aligned.