|Forum topic by Marcus||posted 11-07-2014 02:22 PM||904 views||0 times favorited||9 replies|
11-07-2014 02:22 PM
Maybe I’m the only person that worries about this, but I hate when my dust bin overfills and next thing I know I get dust in my filter and have a mess. I looked for commercial versions, but the cheapest I found was from Oneida for close to $150. I decided to pick up an arduino (a microprocessor on a board with inputs/outputs and power built in) and see what I could come up with. Here’s a first prototype:
Those 2 barrels you see are a sonar sensor. One sends out an inaudible signal and the other receives the signal after it bounces off something. You can then calculate the distance based on how long this takes. From there, I just turn on LEDs and finally and alarm based on how far away the sensor determines something is. Finally, when something gets real close, I turn on an alarm. The idea is that I would put the sonar sensor in the bin and leave a box on the outside with the LED and alarms on it.
I’m a bit concerned in using a sonar sensor in a noisy work environment like a shop, but its a high enough frequency that I think I should be good. I also could use an IR sensor if I needed to, but they’re about 5x more expensive and I would think that saw dust would not be too reflective to light.
A few things I want to change:
I want to get some larger/brighter LEDs. These are just some el cheapo ones I had laying around. You can get some that are considerably brighter that I think would gain a bit more attention. I’ve thought about adding a 12V relay and a strobe light. Once again, that adds a good deal of cost to the unit. Also, I need the alarm to be way louder. Pretty easy to do by just adding in a cheap transformer.
Right now, the prototype is about the the size of 2 decks of cards and cost $25ish all in. I think I can get it to the size of under a single deck of cards and lower the cost a few bucks for a finish product.
Thoughts on improving?