http://forums.leaflabs.com/topic.php?id=1052 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:08:15 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1052#post-9914 Tue, 27 Mar 2012 02:05:22 +0000 asterix 9914@http://forums.leaflabs.com/ <p>Thanks nplayle! Your time is much appreciated. </p> http://forums.leaflabs.com/topic.php?id=1052#post-9882 Sun, 25 Mar 2012 13:24:28 +0000 nplayle 9882@http://forums.leaflabs.com/ <p>You might not need to swap the capacitors, but it doesn't hurt to have them on hand either. </p> <p>The schematic and BOM for the r5 can be found here: <a href="https://github.com/leaflabs/maple/tree/master/maple-r5" rel="nofollow">https://github.com/leaflabs/maple/tree/master/maple-r5</a></p> <p>According to the BOM, the regulator is the one you chose, but the capacitor is different.<br /> The BOM capacitor is here: <a href="http://search.digikey.com/ca/en/products/EEE-FPC220UAR/PCE4529TR-ND/1700983" rel="nofollow">http://search.digikey.com/ca/en/products/EEE-FPC220UAR/PCE4529TR-ND/1700983</a></p> <p>The difference is the one in the BOM has a lower ESR and a higher ripple current. That said, the one you selected is probably okay unless you're using really noisy components. </p> http://forums.leaflabs.com/topic.php?id=1052#post-9877 Sat, 24 Mar 2012 21:42:17 +0000 asterix 9877@http://forums.leaflabs.com/ <p>Ok I did the same, and I'm going to have to wait for the mini's to come out of production before I can order more. I'm hoping that swapping out the regulators and capacitors on my rev5 should get me back online, as I have no power from usb or external. Are these components going to be correct?</p> <p><a href="http://au.element14.com/microchip/mcp1703t-3302e-cb/v-reg-ldo-250ma-3-3v-sot-23a-3/dp/1439518" rel="nofollow">http://au.element14.com/microchip/mcp1703t-3302e-cb/v-reg-ldo-250ma-3-3v-sot-23a-3/dp/1439518</a></p> <p><a href="http://au.element14.com/vishay-bc-components/mal215375229e3/capacitor-smd-16v-22uf/dp/1834244" rel="nofollow">http://au.element14.com/vishay-bc-components/mal215375229e3/capacitor-smd-16v-22uf/dp/1834244</a> </p> http://forums.leaflabs.com/topic.php?id=1052#post-6409 Tue, 20 Sep 2011 11:20:02 +0000 poslathian 6409@http://forums.leaflabs.com/ <p>It sounds like your analog regulator is still working. You could always pop off the digital one, and wire vdda to vcc. As long as you arnt drawing too much current this should be OK. The regulators, by the way, are from Microchip, the MCP series. IIRC, its MCP1703. </p> http://forums.leaflabs.com/topic.php?id=1052#post-6407 Tue, 20 Sep 2011 10:38:37 +0000 robodude666 6407@http://forums.leaflabs.com/ <p>So...</p> <p>I was using the Vin pin for a project and had four AA batteries (6.33V) pack connected to it. It worked well, except for when I accidentally reversed polarity for a couple seconds. The primary regulator (VCC) now outputs 2.454V, while the analog reference regulator (VDDA) still outputs 3.32V. The maple still appears to power up and function -- even the USB bootloader still works.</p> <p>Looking at the board, I see four SOT23 packages. The two next to the row of resistors by the USB connector appear to be Q3 and Q2 for the USB DM/DP circuitry. That leaves the other two, by the capacitors and the DC jack, to be the two regulators. However, the only markings are "HU95" and the schematic doesn't label a part number. Is there a known similar part that I could use to replace the regulators?</p> <p>I might just get an RET6 to complete my collection.. Until then, I'll play with the Maple Native Beta and my Maple Mini.</p> <p>-robodude666 </p>