- PBX systems
- Building robot hardware
- Building electronics
- Ozeki Matrix
- PCB designing
- Making the board
- Drilling and cutting the board
- Soldering and testing
- Burnishing and soldering
- Testing your PCB panel
- Building robot software
- Robot training
- Port assignments
- Upload Arduino code
Testing your PCB panel
To find out if your PCB really works you will need to test it out with an adjustable lab bench power supply and an oscilloscope. You can test it out by rising the voltage smoothly. The oscilloscope is necessary if you would like to check the waveform of the measurable signals.
We tested a PCB which blinks a small LED:
Step 1: Set the constant current and voltage to minimum
Before turning the power supply on, make sure that you twist every button value to zero. Now connect the GND pole of the power supply to the ground of your PCB and turn the power supply on (Figure 1).
Figure 1 - Make sure you set the power supply to zero
Step 2: Carefully rise the voltage
Now connect both poles of the power supply to your PCB. Smoothly rise the voltage (Figure 2) until it reaches the required voltage level. Some kind of indicator can be helpful on your printed circuit board, for example a built in LED showing if the board is working.
Figure 2 - Smoothly rise the voltage
Step 3: Check the waveform of the signal with an oscilloscope
If everything went as expected you should do the final measurements with an oscilloscope. This can be useful for measuring signals. It can measure voltage in real time between two points. For example if you connect the oscilloscope on a blinking LED, you should see a PWM signal (Figure 3).
Figure 3 - The PWM signal of a blinking LED. If the signal is HIGH the LED is turned on or if the signal is LOW
the LED is turned off.