My other robots based on the FRDM-KL25Z use Bluetooth as connectivity. This one is using a Freescale IEEE802.15.4/ZigBee/SMAC module:
Robot with SRB MC13213 Board as Remote Controller
Freedom Track Robot with IEEE802.15.4/SMAC
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Daily Archives: May 12, 2013
Fix for 3.3V Voltage Drop on FRDM-KL25Z Board
With my Pololu line following robot I had strange problems with the sensor array: the sensor values were very unreliable. Until I have found the problem: Instead of the expected 3.3V, my FRDM-KL25Z RevD board provided 2.8V instead 3.3V on the P3V3 Arduino header pin:
Measured 2.8V on P3V3
And that voltage even was lower the more current I needed :-(. Luckily there is an easy hardware fix for this.
MCU on Eclipse 