1) Get your smartphone
You will need good camera smartphone. The better the camera, the better the visual inspection detection. Almost any mid-range, not too old, smartphone will work. Place your board on a light color surface. The photo has to be taken from a distance of approximately 20-22 cms (8-9 inches).
We strongly recommend to use a tripod so the smartphone will stay steady during the process.
2) The reference board
First, you will need to set a reference board. An example of what the neural network will use to compare all the PCBAs with. A "golden sample" This reference board will be a pre-checked and working condition PCB.
Do not use digital zoom
Center the board/wafer in the photo
Avoid to all cost light reflections on the board. Uniform lighting conditions will bring the best inspection results. Keep in mind that the neural network will not see what a technician can not see on the photo.
Avoid casting shadows
That will reduce the visual inspection capability to detect faults
Keep away direct light sources from the PCB.
They will create reflections on its surface
A good ambient light
and a detailed photo will drastically improve the detection capabilities
3) Take photos of the boards to inspect
Now, once the reference board has been set. Take photos of the boards to inspect.
A perfect alignment or placing the board always in the same position is not mandatory. The neural network will take care of correcting perspective and orientation but try not to place the boards too far from reference board original location
Do no cast shadows with your hand or any other object
Blurry photos will provide poor results
Using the WebAPP to inspect the boards
The WebApp allows you, in a fast way, to inspect the board using a simple user interface. Watch the video below to know how to use it.
You will need a USER ID in order to get access to the inspection tool. Contact us if you are interested. Once you get one, you are set to go.
NOTE: Either your are running the WebAPP in a tablet/smartphone or Computer, the processing time and results will be the same.
We recommend to use a computer to run the WebApp as that way you can connect the smartphone via USB, and drag and drop the photos taken directly to the WebAPP (as shown in the video above). To do that, connect the smartphone to your computer using a USB cable, set the smartphone in "storage mode" and ready to take photos. Open its DCIM/Camera folder to access to the latest photo taken. Then, just drag and drop them into the WebApp.
If you are using an Android device, once connected to the computer you will be prompted for an option.
> Select TRANSFER FILES
Then, from the computer, go to the CAMERA´s photos folder. There you will find the latest photos taken. Once there, just drag and drop the photos of the boards to the WebApp