Velleman projects K8050 Assembly instructions - Manual (Page 13)

13
Testing the circuit
Now test the inputs :
Using your transmitter, choose each time a different output.
Ex. Press 1 on your transmitter, normally LED LD1 should light.
Repeat this for every output.
All the LED’s should have lit up one by one.
Test the outputs :
You can check each output for correct operation,
using a LED and resistor (390Ω) in series.
Connect pin +V of SK2, see point A with the left
side of the resistor (See fig 3.0) and connect the
cathode side of the diode with the output 1. The
right sight of the resistor is connected with the
Anode of the LED.
Repeat this for every output (A+2, A+3, …
A+15).
The LED should have lit each time you have
chosen a different output.
FIG 3.0
A
LED