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 Post subject: Dust collector alarm
PostPosted: Sat Sep 24, 2016 6:45 pm 
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Location: Albuquerque NM
I've been playing around with the Arduino world of electronics bits and pieces and decided an alarm to alert me to a full dust collector would be a worthwhile little project. The alarm uses an ultrasonic range sensor to detect the level of the sawdust in the bag. A piezo buzzer beeps when the level is within about 12" of the sensor, sounds continuously when the level is within 6". Total cost was about $5.

Here's the completed unit mounted on the dust collector in a bracket a friend 3D printed. (He works at a 3d printer company and free printing is an official fringe benefit).

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Here's what the guts look like spread out -

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And here they are jammed in the box:

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and the sensor inside the dust collector:

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 Post subject: Re: Dust collector alarm
PostPosted: Sun Sep 25, 2016 10:13 am 
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Location: Skagit Co WA
Nifty little device. And the price seems quite reasonable.

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 Post subject: Re: Dust collector alarm
PostPosted: Sun Sep 25, 2016 2:06 pm 
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Location: Silver City NM USA July
DR< could you give us the location for that gadget? Just what I need

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 Post subject: Re: Dust collector alarm
PostPosted: Sun Sep 25, 2016 10:15 pm 
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Location: Albuquerque NM
Frank Robie wrote:
DR< could you give us the location for that gadget? Just what I need


I made it myself. That doesn't help much when it comes to buying one.
I'm pretty sure there are commercial units from the usual sources.
A simple DIY solution is to just take a micro-switch and some sort of spring-loaded pressure plate that will close the switch when the bag gets full (heavy). The switch could be connected to a buzzer or light. Doesn't take even the relatively modest electronics and programming skills it took to build the widget I made.


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 Post subject: Re: Dust collector alarm
PostPosted: Sun Sep 25, 2016 10:22 pm 
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Joined: Mon Apr 11, 2005 12:01 am
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Location: Seattle, WA, USA
Hey drstrip,

I have a similar unit on my Oneida cyclone collection drum. It cost way more than $5 though. :-?
The one plus side is that it turns on a flashing blue light instead of an audible alarm. That way, I can tell when it's full, even when I'm running a noisy machine.

Cheers,
Tom

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