README.md
This variant attempts to be as faithful to the Blackmagic mini as
possible, but also has several differences. This board has been built
and functions.




Details


The schematic and board have both been designed using Cadsoft EAGLE
v6.4.0.
The board size is 40mm x 16mm.
The programming connector is an ARM 10-PIN Interface as described
]]>here]]>.


Differences

Uses 0603 [1608 Metric] components

The layout is intended for reflow soldering.

Includes Level Translator

This board incorporates the same level translator used in the
full-sized Blackmagic, so it can be used to safely program 2.7V or
1.8V systems.

USART Connector

The STM32F103's USART1 peripheral is broken out into a 0.1"
header. The hole centres are
]]>slightly offset to allow a press-fit]]>.

BOOT0 Button

As well as the standard button for entering USB DFU mode, this variant
also provides a button for pulling the BOOT0 pin high to activate the
STM32 SystemMemory bootloader. Hold this button when plugging in the
module to enter then bootloader mode. Then
scripts/bootprog.py can be used to program and
reprogram the chip over the USART1 interface.

This is useful for programming a brand new or 'bricked' blackmagic
with the DFU firmware (src/blackmagic_dfu.bin), the standard DFU mode
should be used for regular firmware updates.

Parts and Costings


Parts List


Parts Cost (Approximate): £14 + VAT
(]]>uk.farnell.com]]> August 2013)

Programming Cable: £8.49 + VAT
(]]>uk.farnell.com]]>
August 2013)

Assembly Photos

Blank PCB:




Solder Paste Stencil: