http://forums.leaflabs.com/topic.php?id=74418 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:06:25 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=74418#post-105684 Tue, 17 Mar 2015 12:21:17 +0000 gbulmer 105684@http://forums.leaflabs.com/ <p>I had a look at the itead schematic. I see what you mean about the USB reset.<br /> I recognise the structure; maybe siy did it, and I remember doing a schematic, but can't remember ever building it.<br /> However the component values look different from my recollection, so maybe it is original, or from some other board.<br /> Yes, the power supply looks different. </p> <p>I haven't checked the Olimex board. That is pretty neat. </p> http://forums.leaflabs.com/topic.php?id=74418#post-105678 Sat, 14 Mar 2015 17:34:34 +0000 rogerclark 105678@http://forums.leaflabs.com/ <p>@gbulmer</p> <p>Sorry for the confusion.</p> <p>I have a "Maple" board which I bought from iTeadStudio, and I assumed that it would have DAC, however when it didnt work, I did a bit more research and realised that only the Maple RET 6 version has DAC.</p> <p>But co-incidentally I also have a generic STM32F103RCT board, and this version of the F103 chip does have the DAC hardware, so I have been able to use libmaple with it</p> <p>I'm not sure why iTeadStudio didn't make the latest version of the Maple, but instead chose to do a version of the F103RB based board - perhaps cost of the micro-controller, or perhaps they started their development before the RET6 was released<br /> But the iTeadStudio maple is not a direct clone of the LeafLabs maple, it has different USB reset hardware, and also different 3.3V VCC / regulation supply electronics </p> http://forums.leaflabs.com/topic.php?id=74418#post-105666 Fri, 27 Feb 2015 04:36:20 +0000 gbulmer 105666@http://forums.leaflabs.com/ <p>@rogerclark - "So please ignore this posting."<br /> So do you want to delete this thread, or leave the original question or comment so that it makes a bit more sense?</p> <p>Also, for folks who make their own Maples using the <a href="https://github.com/gbulmer/openstm32hw">Open Hardware community designs</a> there are options to use STM32F3 and STM32F4 also which have DACs.</p> <p>Finally, IIRC, several of the <a href="http://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/LN1847">MBED compatible ST Nucleo's</a> have DACs. </p> http://forums.leaflabs.com/topic.php?id=74418#post-105665 Thu, 26 Feb 2015 04:48:34 +0000 rogerclark 105665@http://forums.leaflabs.com/ <p>Hi</p> <p>EDIT.</p> <p>I just realised that all Maples are not created equal. </p> <p>I have a Maple which has a F103RBT on it, not the RET version required for DAC</p> <p>So please ignore this posting. </p>