tag:blogger.com,1999:blog-18025058.post7093381075176885866..comments2023-08-16T03:40:54.742-05:00Comments on growdown: Half Bot, All Boat.Tim Hirzelhttp://www.blogger.com/profile/01455788234007245234noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-18025058.post-57433262335117019282009-04-20T20:07:00.000-05:002009-04-20T20:07:00.000-05:00Alan, Good question. Those minkotas will draw up ...Alan, Good question. Those minkotas will draw up to 30 amps each. They are rated for that, and I measured it with a "watts up" watt meter. That controller can handle I think up to 75 amps with extra heat sinks (which I added). This is all with 12v (2 6v golf carts batteries). What I didn't think to do is a trick I learned from a robot site, overvolting. You can run those 12V motors at 24V but keep the total power under control by staying below a 50% duty cycle with the controller. I think that would cut your amperage in half. I really want to do this because that controller got really hot (hot enough to cause soldier joints to break loose!) even with my little heat sink and fan. I also got a little heat in the wires and at plugs. So this is what I would recommend. I am also planning to sell the 6V cart batteries and replace them with 2 group 27 12V batteries. The T-105 equivalent golf cart batteries weigh over 125 lbs together, and this just strains the whole operation more than i like for launch and recovery. In the water, the weight is fine. Anyhow, that's my plan to solve a couple problems at once. Not to mention that it will allow for your goal too. I need to experiment with this still, and some care is required for overvolting, read more about it here: http://www.robotbooks.com/magmotor_tips.htm <br /><br />and elsewhere.<br /><br />-TTim Hirzelhttps://www.blogger.com/profile/01455788234007245234noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-89842834327518983442009-04-20T19:22:00.000-05:002009-04-20T19:22:00.000-05:00Just wondering if you ever measured your current d...Just wondering if you ever measured your current draw? It looks like the motor driver you used was for 50 amps, but I'm wondering if you could have gone with a smaller motor driver?Alanhttps://www.blogger.com/profile/13683544667280877332noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-73313303282348291592009-04-15T03:34:00.000-05:002009-04-15T03:34:00.000-05:00Finally!
A blog worth reading on forward until th...Finally! <br />A blog worth reading on forward until the end! :) I really admire the wording in this blog, quite precise to the details but I just might change one or two things, never-the-less, bravo on well choiced words mate.. p.s.>> Thanks for sharing, I actually picked up some knowledge on this one :)<br />-Have an amazing day!<br /><A HREF="http://www.sparepartswarehouse.com" REL="nofollow">Compaq Laptop Batteries<br /></A>Unknownhttps://www.blogger.com/profile/02749114081097587856noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-90425921979936730242008-10-30T16:43:00.000-05:002008-10-30T16:43:00.000-05:00Fantastic, yet again!Where does your inspiration c...Fantastic, yet again!<BR/><BR/>Where does your inspiration come from? <BR/><BR/>Picture the scene: you're on a river, fishing or something, and the boat keeps floating down stream. How difficult do you think it would be to use a GPS chip or something to keep the boat still relative to the bank? Quite an interesting challenge, I think.<BR/><BR/>Thanks for posting.adminhttps://www.blogger.com/profile/07087766696095795011noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-23016698880250744842008-07-31T16:59:00.000-05:002008-07-31T16:59:00.000-05:00I have been wanting to do something similar to thi...I have been wanting to do something similar to this for so long. Not as fancy as a joystick control but steering for my endura. I second anonymous in asking for more details!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-18025058.post-63487952736022581622008-07-29T23:50:00.000-05:002008-07-29T23:50:00.000-05:00brah... many, many thanks for your paddler/techie ...brah... many, many thanks for your paddler/techie mod. you're proving some of us heady folk are just as "at home" with a mod life/tech life as we are in our floatable rigs. nothing better to do than mess around in boats.<BR/><BR/>from a fellow head and techable friend-<BR/><BR/>where in the world are you anyhow-<BR/><BR/>all the best...<BR/><BR/>(found you on gizmodo... way to make the bigtime)Anonymoushttps://www.blogger.com/profile/05328041650912872411noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-62064220155102536082008-07-29T16:10:00.000-05:002008-07-29T16:10:00.000-05:00Me likey you smart thinky brain. Sweet post bra!Me likey you smart thinky brain. Sweet post bra!skeletorhttps://www.blogger.com/profile/09217524247801810201noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-46575839334560846202008-07-28T07:14:00.000-05:002008-07-28T07:14:00.000-05:00You are smart. Period.You are smart. Period.andreahttps://www.blogger.com/profile/02132628030315087437noreply@blogger.comtag:blogger.com,1999:blog-18025058.post-35295590199329766432008-07-28T05:44:00.000-05:002008-07-28T05:44:00.000-05:00Great project! This opens up a lot of possibiliti...Great project! This opens up a lot of possibilities for adaptive & handicapped users as well.<BR/><BR/>Would it be possible to get a more detailed description of the build (an Instructibles posting or similar) showing how to dependably turn a heavy motor using a standard servo and similar problems faced by your fellow tinkerers?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-18025058.post-53159042879670177012008-07-24T17:51:00.000-05:002008-07-24T17:51:00.000-05:00Wow. Totally awesome.Wow. Totally awesome.Robinhttps://www.blogger.com/profile/17804606072553393324noreply@blogger.com