User Manual

www.flyingtech.co.uk
With any new build or after making any changes, always test carefully in a
controlled environment. Ensure propellers rotate in the correct direction
and are tightened, that all signal connections are in the right order and
firmly connected. Motors connected in the wrong order may result in
uncontrolled flips. Never attempt to stop propellers by hand, and maintain a
safe distance at all times.
The AfroESC 20A has a lightweight BEC, capable of about 0.5A, which
should be sufficient to power most flight boards, but not servos. A
dedicated BEC is recommended where servos or other devices are used.
There is NO protection against reverse polarity, which would reduce
efficiency and add weight. Be sure that you connect RED to POSITIVE
(+V) and BLACK to GROUND when wiring or attaching bullets to avoid
damage.
Software and Updates
If desired, the firmware may be upgraded and/or customized to enable or
disable various features such as complementary PWM, brake, RC-Car
mode, or adjust default settings such as endpoints and motor timing. The
firmware can be updated using similar procedures as for the KK(2) and
other projects based on ATmega hardware. For source code, binaries, and
other information, see http://github.com/sim-/tgy/ and http://0x.ca/tgy/.
The easiest way of updating is with the Afro USB Linker from HobbyKing
attached to the regular PWM input cable. Only the signal and ground
connections are required. The boot loader speaks STK500v2 at 9600 baud
using the half duplex protocol implemented by the Afro USB Linker. Other
linkers (such as USB serial linkers) will not work at this time.
The KKmulticopter Flash Tool or any general AVR ISP software may be
used with any of the above options. See the above URLs for links and
more information.
Default Settings
Input control is available through PWM, or through I2C (MK) or UART with
additional wiring (auto- detected).
For PWM input, motor stop / arm below 1060μs, full power at 1860μs."For
I
2
C input, motor stop / arm at 0, start at 1, full power at 247. BL-Ctrl V2
reverse supported. For UART input, motor stop / arm at 0, start at 1, full