The infrared wireless port when updating
Since sunlight and ambient room lighting would interfere with any IR detector just looking at light levels, the signal modulates (i.e. There are a few early first generation electronic ballasts for fluorescent lights operating this range that can cause interference with IR remotes, but in most cases it works well.
TVs and radios typically have Infrared (IR) remote controls.A discrete IR LED should have an operating voltage of around 1.5V, so don't forget the series voltage dropping resistor!Schematic of IR LED breakout board Sparkfun IR receiver module The Sparkfun IR receiver breakout board seen above contains a Vishay TSOP853 38Khz IR receiver module. IR receiver module block diagram This newer 38Khz IR receiver module from Sparkfun should also work for the demo.At a range of just a few inches the receiver can pickup the signal from the side, if case you have trouble pointing it directly towards the IR LED.
Long right angle header pins might be a good idea on these IR breakout boards since they can then be mounted sticking up and directly facing each other.Solder header pins into the breakout boards and everything will hookup on a breadboard.Point the IR LED towards the receiver breakout board.Sparkfun IR LED transmitter module The Sparkfun IR LED breakout board seen above contains a 50MA high output IR LED and a driver circuit using a transistor as seen in the schematic below.