SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T02:58:21-06:00SparkFun Electronicssomeotherguy on PRT-09835 - Battery Holder - 4xAA to Barrel Jack Connectorsomeotherguyurn:uuid:fcda1c0c-6273-fa76-b068-bfbde6b2894f2014-08-04T16:36:21-06:00<p>Try using a double-sided sticky pad.</p>
someotherguy on PRT-09835 - Battery Holder - 4xAA to Barrel Jack Connectorsomeotherguyurn:uuid:593891b5-90df-4cde-ec8d-8f78a06f885b2014-08-04T16:35:36-06:00<p>I have not been able to find one that will yet. The holes are right up against the wall!</p>
Sora62896 on PRT-09835 - Battery Holder - 4xAA to Barrel Jack ConnectorSora62896urn:uuid:98398324-0325-3d3c-fbd4-8bf3d6228ee82012-04-10T07:51:17-06:00<p>And even for those who don't solder, <em>the .01%</em>, There is the DC Barrel Jack Adapter!</p>
Cool Cap Engineer2 on PRT-09835 - Battery Holder - 4xAA to Barrel Jack ConnectorCool Cap Engineer2urn:uuid:bb11d62a-b917-911b-74a9-b5486edb525d2010-08-09T16:12:57-06:00<p>Does anyone know the best flat head screw to use to secure this?</p>
RobertC. on PRT-09835 - Battery Holder - 4xAA to Barrel Jack ConnectorRobertC.urn:uuid:9168e42c-2589-dc3c-38b3-57efab417c592010-05-20T12:35:22-06:00<p>Check it:<br>
<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=9701" rel="nofollow">http://www.sparkfun.com/commerce/product_info.php?products_id=9701</a><br>
no barrel jack, but that's what your soldering iron is for right?</p>
tiagofumo on PRT-09835 - Battery Holder - 4xAA to Barrel Jack Connectortiagofumourn:uuid:e68a7189-f79c-bb8f-4f75-30c495df1aeb2010-05-19T16:57:48-06:00<p>well, I will be happy when everything become 3.3v normaly... but till there, they could make this one with double side or something that you coud attach and dettach easily from the arduino back side... or a nice li-ion battery packs giving 7.4v with a barrel jack connector :)<br>
Or even this 4 AA one in a usb connector :)</p>
jimblom on PRT-09835 - Battery Holder - 4xAA to Barrel Jack Connectorjimblomurn:uuid:99e69211-9c66-6941-3f64-060bed604abd2010-05-19T14:47:02-06:00<p>Great point! You're 100% correct, Eric. The 5V regulator on the Arduino has a dropout voltage of ~1V, and there's also a diode on the input line, which drops the voltage another ~0.7V. Plugging this into my Arduino, here's what I got:<br>
4 pack of slightly used AAs was delivering 5.39V and the voltage at the '5V' pin of the Arduino was 3.64V - just about -1.7V.<br>
That said, the Arduino was still able to control a 5V 16x2 LCD (if much dimmer and requiring a contrast adjustment).<br>
Definitely might want to consider a different route if you're project requires exactly 5V.</p>
esklar81 on PRT-09835 - Battery Holder - 4xAA to Barrel Jack Connectoresklar81urn:uuid:73585615-d875-f3b5-bb6d-2ca193e06b352010-05-19T12:58:54-06:00<p>The nominal voltage of a NiMH cell is 1.2 V. Four of those in series produce a nominal 4.8 V. The minimum supply voltage for a Duemilanove is 6 V, the minimum recommended supply voltage is 7 V. The minimum operating voltage for an Arduino Pro is either 3.35 V or 5 V, depending on the uProc nominal voltage.<br>
This battery holder is probably suitable for a nominal 3.3 V device, but...<br>
Wouldn't six (or, at least, 5) cells be more useful?<br>
Eric</p>