/products/arduino/b/blog/posts/sleepy-blinkI&#39;ve been given a new board from 4tronix to RoadTest, which is compatible with an Arduino UNO but with a significantly different form factor. The board is still in beta so has yet to gain a proper name. The board is 27mm in diameter about the same...en-USTelligent Community 12https://community.element14.com/products/arduino/b/blog/posts/sleepy-blinkThu, 04 Aug 2016 07:46:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:7d06cac3-1c99-43d1-9978-002941944d9aFormer Member1<p>The 33hrs is not a long time, I think you can do better.</p><p>&nbsp;</p><p>Is a schematic available ? To check if the CH340G is not using power ?</p><p>The Power_Down mode is the maximum sleep mode.</p><p>I use the Narcoleptic library. It can sleep longer than 8 seconds, because the library takes care of going into sleep again after 8 seconds until the total time is reached.</p><p>&nbsp;</p><p>Turning on a led during 100 milliseconds every second is a lot. Have you seen the led of a smoke detector ? It is a very short flash with a very long time in between.</p><p>&nbsp;</p><p>This is a full explanation and tests : <a class="jive-link-external-small" href="http://www.gammon.com.au/power" rel="nofollow ugc noopener" target="_blank">http://www.gammon.com.au/power</a></p><img src="https://community.element14.com/aggbug?PostID=1694&AppID=145&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/products/arduino/b/blog/posts/sleepy-blinkSun, 10 Jul 2016 18:29:41 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:7d06cac3-1c99-43d1-9978-002941944d9aDAB0<p>Looks like an interesting board for small projects.</p><p>&nbsp;</p><p>You should be able to use some basic power management techniques to get long life from you batteries.</p><p>&nbsp;</p><p>DAB</p><img src="https://community.element14.com/aggbug?PostID=1694&AppID=145&AppType=Weblog&ContentType=0" width="1" height="1">