<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1415988604584_4353"><span id="yui_3_16_0_1_1415988604584_4352">I am using arduino mega because it has more input/output pins. But yes, I am designing much of the same via arduino. Thousands of sensors will work with them.</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: times new roman, new york, times, serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <font size="2" face="Arial"> On Friday, November 14, 2014 12:19 PM, roberto alvarez via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><div id="yiv8556579480"><div dir="ltr"><div><div><div><div><div>Good Morning, first i am not an electronics master, was working on the co2 scrubers , then my imagination again move ahead of my hands and make me thik that the scruber must be inteligent, based on the parameters<br></div>cabin pressure,CO2 , O2 concentration and temperature, i think that will be helpfull a device for monitor this conditions, found a programable board with the optional sensors, the UNO ( 4 dlls on ebay ) the barometric pressure sensor ( 2 dlls on ebay ) the carbon monoxide sensor ( 4 dlls) , tilt sensors (1.75 usd) and many other sensors<br></div>with this info, this boar will check cabin pressure and co2 %, the boar can activate a relay to let oxigen enter and keep a safe enviroment<br>also the tilt sensors can help me to control position in low visibility conditions, may be will need 3 boards and several sensors that will let me have an auxiliar control system<br><br></div>Another system that i need develop or know if can be develop or find is a neutral bouyancy , based in flow of water on the vertical axle, this black box ( because i dont know what will have inside ) will control valves on the variable ballast system<br></div>just my ideas, if this is for sale some were ,please tell me to consider with the arduino a complet system looks to be below 100 usd as will be common sensors ans actuators ( relays ) <br></div>i draw a system using just relays and mercury switches ( the ones that stop the outboard when tilt,or on the ac thermosthats ) buw will take a big space and many meters of wire, will be a heat source , a single boar can solve this, buti need your comments, thanks<br></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div> </div></body></html>