Hi Andrew,
On 5/11/22 16:29, andrew beck wrote:
hey guys
i am sure there is lots of experience here
i am looking for a color sensor to sense when a red color chip goes past on
a conveyor
normally the chips are just green and black. they can be colored in with a
red marker if they are faulty and then we want this sensor to detect them.
Color intensity is important to differentiate between them. Most cameras
can handle that these days.
currently i am getting prices back at 500 bucks nzd each and i need 4 of
them which seems a bit pricey lol
considering at the other end of the price point i can get a arduino option
for 8 dollars but it is not so plug and play. and is only 5v and needs a
chip too i think.
i want something that can be connected with a PLC to have a simple trigger
on or off .
you guys got any ideas?
regards
Andrew
Tensorflow came to mind right away. It's in the machine learning (ML)
class. Amazing software if you ask me.
https://www.tensorflow.org/install
Obviously you'll need to do some research to connect things together.
There is a tensorflow application for Android which I used on my PDA
(phone is one app on it) to detect objects. It was fun to direct the
camera towards a TV and detect moving objects on it.
I would start with RaspberryPi, add camera (even a USB kind), and
install tensorflow. That way you could start experimenting with ML to
detect different chips, count them, and kick off the bad ones from the
conveyor belt. A RaspberryPi with a transistor activating an
electromagnet could do the job. Estimated cost? $60-80 I think.
Be careful with handling low voltage RaspberryPi and more powerful side
to handle the mechanics.
See examples of what can be done
https://www.tensorflow.org/lite/examples
Came to mind, it would be good to have a machine to sort different kinds
of screws from a "collection box". US screws mixed with metric ones is a
total nightmare for me.
Best wishes,
Rafael Skodlar
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