I have this old RC toy car and wanted to control it with an Arduino, replacing just the Transmitter - TX2.
I got the TX2/RX2 datasheet here: http://www.jbprojects.net/projects/wifirobot/TX2RX2.doc
So I soldered a wire exactly where TX2 pin 8 were and connected it with Arduino Mega’s digital pin 12 and tried to reproduce the commands by setting pin 12 in High or Low state, like below:
digitalWriteFast(pin, HIGH); delayMicroseconds(500); digitalWriteFast(pin, LOW); delayMicroseconds(500);
It seemed fine, except it didn’t work.
Do you guys have a glimpse of what might be going on?