I am using the Arduino Fio on an off road vehicle and was wondering if it is possible to capture both engine speed (tach) from a coil around the sparkplug in addition to wheel speed based off a reed switch and magnet?
In addition to these readings I am utilizing the CapSense library to have a capacitive liquid sensor based on this instructable: http://www.instructables.com/id/Building-a-Capacitive-Liquid-Sensor/
Also controlling an RGB LED and polling a pushbutton. All this data is being sent over an XBee back to a remote computer. Is it possible to do all of this on 1 Arduino? If not my plan was to have 2 attiny85's to sample the tach and speed separately and then send that to the main Fio.
Thanks in advance! Ed