Description: This circuit can be used for testing your TV, DVD, VCD, etc. remote control. This is the fundamental module for making infrared based object counter. This project has been derived from “Remote tester project” .
According to the datasheet of TSOP4838, the input voltage to IR sensor should be 3V-5V. When the sensor gets infrared signal, the voltage at its VO pin drops and that triggers the BC557 transistor. At each trigger signal, BC557 glows the LED. Thus, you can see the response of your remote control signal.
WATCH THE VIDEO:
In the schematic below, for TSOP 4838, V1 is INPUT and VO is OUTPUT.
In real, the experiment set up looks like this:
WATCH THE VIDEO:Free Circuit Design Software: learn to use Editor quickly and easily Cheapest PCB: 10pcs 2-layers 10cm×10cm only $8.21, 3-day build time, 100% E-test