Two talking codebugs

[mikerr]

Here's VERY simple comms between two codebugs:


https://www.youtube.com/watch?v=G1XbFfA6tdY

Ultra simple comms - it's just measuring the length of a "pulse" sent from one to another, and using that number as the data.


Pin 1 is output
Pin 0 is input with internal pullups disabled
and a "pull down" resistor across pin 0 and GND

Only one bug has a battery in it, one powers the other via the bottom header
- this helps greatly with synchronization too, since they are both turned on at the same time.

http://www.codebug.org.uk/explore/codeb ... bug-comms/

No doubt needs a better protocol and sync to be of more use,
but I wanted the first sketch to be short and simple (KISS)

[mikerr]

Just thinking this might be a way to get arduino & codebug talking
instead of the i2c method ( which uses codebug as a slave)

[BMS Doug]

it's good stuff Mike, Very Nice.

you could probably run a slight modification of the same program to omit the pulldown resistor, just hold the transmit leg high until you want to send a signal and transmit your pulse by dropping it low.