View source for MAD-AS

We have now published paper: https://pubs.acs.org/doi/10.1021/acsestwater.5c00281

Please check out the extended abstract on the MAS AS autosampler: [[File:Mad as ext abstract.pdf]] <br>

=MAD-AS - the MAD AutoSampler!=

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Introducing the all new, OPEN HARDWARE OPEN SOURCE, 3D printed, low cost, automatic sampler specifically designed for taking many tens/hundreds of small samples over the course of a day or several days. All done using open source and open hardware, you can download our 3D print design and then go to your local electronics store and buy everything you need to assemble this in less than 15mins (N.B. 3D printing takes 12hrs). Total cost is estimated to be <$30AUD.
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We have designed a new autosampler that is flexible in its size (i.e. can fit into space constrained pipes) and scalable in terms of sampling volumes (i.e. to sample high volumes for low concentrations). The MAD-AS estimated cost is $25 AUD, sits in the water column and contains a 3D printed peristaltic pump that takes water and places it into the tubing, which is also used to hang the device in the sewer/stream. A small microcontroller (based on the Arduino platform), two 3.7v 700mAh batteries and Near Field Communication enables the device to be programmed and initiated. While it currently does time-based sampling (it can sample continuously for 10 days), future designs will include our open-hardware depth and velocity sensors to enable flow-based sampling. Telemetry will be included to initiate sampling based on a trigger (i.e. a sewer overflow).

[[File:MAD-AS.png|frame]]

=NEW REPORT OUT ON THE MAD-AS=
Take a look at this - thanks Steven! 
[[File:Pang-28687159-FinalReport.pdf|thumb]]
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Or Take a look at Stephen's Video:
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<embedvideo dimensions="700" service="youtube">https://www.youtube.com/watch?v=nrJ4nyS8JAw</embedvideo>
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=MAD-AS Associated Files=
For the MAD-AS, we use the following items:
* 1x BoSL Pump ([[BoSL_FAL_Pump|LINK]])
* 1x MAD-AS 3D-printed case ([http://www.bosl.com.au/wiki/images/d/d6/InsewerPumpCase_v61_MAD-AD.stl LINK])

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=MAD-AS Trials - in sewage!=
<br> Check out our new trials of the MAD-AS at sewage treatment plants. These little guys work pretty well, we think you'd agree:
*Report outlining results of Round A trial [August 2021]: [[File:MAD-AS-Trials.pdf|thumb]]
*Report outlining results of Round A and Round B trials [December 2021]: [[File:MAD-AS-Trials Including Round B.pdf|thumb]]

=MAD-AS Remote=
A new version of MAD-AS is in development! The BoSL team built the HC-12 radio module in the MAD-AS device and realised the remote control of the MAD-AS device. With the help of a nearby additional microcontroller equipped with the SIM card, the MAD-AS can be controlled over the webserver to start and stop sampling, and its status can also be viewed nearly real-time. 

The introduction of the MAD-AS Remote allows the researchers to have the flexibility to choose and control the sampling period of the samplers according to the changing environment (for example, the researchers want to wait for the wet weather sampling). Previously, the fieldwork crews have to activate a certain sampling program when deploying the samplers in the field, hence the sampling period is largely limited and not flexible at all. 

Please check the report of the MAD-AS Remote battery test: [[File:MAD-AS_Remote_Battery_Test_Report.pdf|thumb]]