v9 - Batch 1

This is the F3FC in the first production batch! Only silkscreen was changed from v8.

Changes:

• Use the bold Polystack branding instead of medium.

v8 - Release Candidate 1

This is the first MacroFab produced F3FC and was a release candidate for the first production run. v7 wasn't committed so its release notes are here too.

Changes:
v8

• Switch to oval holes for USB.
• Add arrow to mark orientation.
• Switch from FlightStack to Polystack.

v7

• Flip p-fet so source is Vdd.
• Add OSHW logo.
• Use thin FlightStack logo.
• Move 3.5mm label slightly lower.
• Add ground pad near 5v pad.

v6

• Route USB as a differential pair.
• Use a p-channel MOSFET for high side switching of BOOT0 to fix reset circuit.
• Add fiducials.
• Match led numbering to reference.
• Support current sensor with ADC.

v5

• Remove battery voltage divider because its now done by the power board.
• Switch to MPU-6000 based on @MotoLab's argument for it.
• Move SWCLK out of single timers and into GPIO because the F4 pin doesn't have a timer.
• Don't put anything directly below the MPU.
• Move motor output pins towards the center a little bit for better clearance against the spacer.

v4

Changes:

• Move decoupling caps to the front side of the board next to the MCU. Thanks to @tracernz for the explanation.
• Re-add the MPU because Cleanflight doesn't fully boot without a gyro.
• Switch from a crystal to a resonator which contains the loading capacitors internally. Thanks to @kc10kevin for the info.

v3

Changes:

• Correct mosfet pinout.
• Add measurement points.
• Remove MPU and use acro board instead.
• Tweaked pinout with one less SPI.

v2

This is a quick bump on v1 after learning more about i2c.

• Adds pullup resistors on the i2c lines.

v1

Initial prototype of the F3 Flight Control board. It features an STM32F303, MPU-6500 and high density 80-pin DF40. This version was never tested because v2 was created soon after.