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<span style="font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; line-height: 17px; background-color: rgb(255, 255, 255); ">Hey Guys,</span><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Update on the logo:</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">At the last ModLab, we were playing around with LED's and the 3V, 20mm coin batteries. The plan as it currently stands is: 3 pairs of LED's and potentiometers, one red, one blue, one green. The LED's will sit in laser cut cutouts in the bottom layer of acrylic, with the potentiometers sitting in cutouts in the top layer of acrylic overtop of them, knobs facing out. This will hide the LED's and allow them to edge light the etched logo from within. Wiring will be done with copper ribbon wire, with conductive adhesive, sandwiched between the two layers, and running parallel near the edge of the piece.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Some concerns that were raised:</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">With 3 LED's running 20mA from a 100mAh battery, the battery life will be less than half an hour.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Potentiometers, LED's, batteries , ribbon wire and glue for the LED's must be sourced cheaply, yet at a high enough quality.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">What we need from you:</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Sourcing for all of the above.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">LED's must be bright enough to light a 13.5cm by 8(ish)cm piece of acrylic, and be low enough power to maximize battery life.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Batteries must be 20mm diameter (or less, but our current design is for 20mm batteries), less than 1/8" thick, and have a long life.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Ribbon wire does not need conductive adhesive, but it will help.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Potentiometers must be as small as possible (but big enough to cover the LED's) and work with the given batteries and LED's for a full on/off range.</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">And of course, everything must be as inexpensive as possible, so we can make as many as possible to promote our awesome lab!</div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">And, as always, any other input is welcome!</div><br><div><font color="#000000">-Mike Coyle</font></div>
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