k-ww wrote:Use series resistors 1K - 4.7K when talking to / listening to the pins.
Even if you drive an output pin with an output, the resistors will limit the current to a safe level.
k-ww wrote:The resistors are not to reduce the voltage - they are to limit the current flow if you missconnect the wiring and try to drive an output with another output. [What I like to call a "Murphy sacrifice" to the patron saint of miss-connections one chip stays at high voltage since it's output is ttl rs232 high, the other tries to drive the pin low - short from VCC to GND occurs, while with the series resistors, the current is limited to what the resistor passes if it were connected between VCC & GND. - and I don't know of any chip outputs that can't source/ sink a few milliamperes or less.
Samot wrote:Do you know how the motors are driven? Is it using I2C for it?
Samot wrote:What about using I2C and Ultra sonic range finder to mantain hight?
Samot wrote:I need to learn how to compile and upload binaries to the choper. Is there any documentation for that?
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