<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1431224170352_2489">This is a quick tutorial on how to make a sonar device that could act as</div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr">a forward sonar for warning of upcomming obstructions.</div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr">Basically it beeps if there is something in it's path, & the beeps have a</div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr">shorter duration between them as the obstacle comes closer.</div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr">It uses an arduino board & has the programing code, which would need to be modifyed</div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr">for a suitable range.</div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr">Total cost...$40- </div><div id="yui_3_16_0_1_1431224170352_2489" dir="ltr"><a href="http://clone.tinkernut.com/portfolio/make-sonar-device/" id="yui_3_16_0_1_1431224170352_2684">How To Make A Sonar Device - Tinkernut Labs</a><br></div><div style="width:450px; 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font-size: 1pt;"> </div></td></tr><tr id="yui_3_16_0_1_1431224170352_2724"><td class="link-enhancr-element" colspan="2" style="width: 100%; vertical-align: middle; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';" id="yui_3_16_0_1_1431224170352_2723"><div class="link-enhancr-text-part link-enhancr-element" style="line-height:16.5px; background-color: #ffffff; height: 135px; width: 245px;" id="yui_3_16_0_1_1431224170352_2722"><div class="link-enhancr-element" style="word-wrap: break-word; word-break: break-all;" id="yui_3_16_0_1_1431224170352_2721"><span class="link-enhancr-element icon icon-shrink link-enhancr-toggle"></span><span class="link-enhancr-element icon icon-close link-enhancr-delete"></span><a href="http://clone.tinkernut.com/portfolio/make-sonar-device/" class="link-enhancr-card-urlWrapper link-enhancr-element" style="text-decoration: none !important; color: #000000 !important; line-height: 100%; font-size: 18px; display: block;" id="yui_3_16_0_1_1431224170352_2720"><span class="link-enhancr-element link-enhancr-card-title" style="margin: 0; font-weight: normal;margin-bottom: 3px; font-size: 18px; line-height: 21px; max-height: 43px; color: #000000; overflow: hidden !important; display: inline-block;" id="yui_3_16_0_1_1431224170352_2719">How To Make A Sonar Device - Tinkernut Labs</span></a><div style="font-size: 13px; line-height: 20px; color: #999999; max-height: 81px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';overflow: hidden;" class="link-enhancr-card-description link-enhancr-element" id="yui_3_16_0_1_1431224170352_2725">Step 1 Gather The Parts Here’s what you will need: Ultrasonic Sensor – $2.59 Arduino – $24.95 Breadboard and Wires – $9.69 TOTAL COST: ~$40.00 Step 2 Downlo...</div></div></div></td></tr><tr id="yui_3_16_0_1_1431224170352_2730"><td colspan="2" class="link-enhancr-element" style="height: 4px; background-color: #ffffff; font-size: 0pt; border-collapse: collapse;" id="yui_3_16_0_1_1431224170352_2729"><div class="link-enhancr-element" style="height: 4px; background-color: #ffffff; font-size: 4pt;" id="yui_3_16_0_1_1431224170352_2728"></div></td></tr><tr id="yui_3_16_0_1_1431224170352_2736"><td class="link-enhancr-element" style="vertical-align: middle; 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