Nice build. These diodes are case positive, unless you got one from DTR, which are actually 510nm. In order to use a boost driver with this diode you must have isolated the diode from the case of the host. Considering your set current of 160 mA and the fact that it does have a heat sink you should get more run time than just 30 seconds. I have a Sharp diode that measures 488nm in a host a little bigger than yours set at 275 mA and I can get over three minutes out of it. That is just the longest I've had it on so far and it doesn't even get warm. :thanks: for sharing yours here.