Step 7 - Insert
LED1 (yellow) and LED2 (red). Note the correct orientation (flat side). Solder at 4 places
Step 8 -
Insert U2 (TSOP1138). Note the correct orientation. Also notice that there are extra solder pads in this
location to allow other IR receiver ICs to be used. The photo shows the correct position for the IC provided. If
another sensor IC is used, carefully check its pin-out on the data sheet before inserting it. Solder at 3 places.
