spirilis 1,265 Posted November 30, 2013 Author Share Posted November 30, 2013 @@spirilis That is a cool photo. Looks like it is about to self-destruct Did you add this to any previous POTMs? Yep this was in last Nov/Dec POTM Sent from my Galaxy Note II with Tapatalk 4 Quote Link to post Share on other sites
spirilis 1,265 Posted December 23, 2013 Author Share Posted December 23, 2013 Finally, one project I've wanted to do since... oh, maybe 1 month after doing the grill monitor. A hangable bright display for viewing the grill temperatures inside the house. I decided to construct this as a BoosterPack; I'm sort've warming up to the idea of using the BoosterPack format for final projects, just because I'm getting too lazy to work out the PCB layout details of each CPU etc. Plus it's cheap to have a bunch of minimalistic launchpads constructed and mix & match them with boosterpacks along with being able to prototype with new MCUs. The new BYOB BoosterPack standard layout helps me feel better about assigning pins too. Anyway, this is not my POTM entry for this Nov-Jan as I have a cooler one I'm going to submit (along the same lines though). Front: Back: Initialization screen: Given their DIRT CHEAP price (<=$1.50/pc in qty), I am really becoming a huge fan of those Nokia 1202 LCDs. I used straight C for this but my msprf24 library includes 9-bit SPI support just for this screen. It's really a nice value and package. Alas, it's just for my own debugging purposes. I may repurpose it later to provide a graphical view of the temperatures over time, but for now it's just debugging messages. Also @@RobG 's technique of wrapping the connector underneath... works extremely well and IMO was easier to solder! The LED displays are those Oasis SPI LED displays found for pretty cheap, I think it was $9 for 10 of them? Nice SPI-addressable displays. Just happen to have a red colon in spite of green lettering, but I don't need the colon for this application. dubnet and bluehash 2 Quote Link to post Share on other sites
bluehash 1,581 Posted December 24, 2013 Share Posted December 24, 2013 The two SPI LEDs and Nokia 1202 are on one board? Quote Link to post Share on other sites
spirilis 1,265 Posted December 24, 2013 Author Share Posted December 24, 2013 The two SPI LEDs and Nokia 1202 are on one board? Yup! bluehash 1 Quote Link to post Share on other sites
abecedarian 330 Posted December 24, 2013 Share Posted December 24, 2013 The two SPI LEDs and Nokia 1202 are on one board? @@bluehash - *and a wireless module. Quote Link to post Share on other sites
spirilis 1,265 Posted February 23, 2014 Author Share Posted February 23, 2014 Been running on the same pair of batteries since... Oct 2012 I think. Each AA shows ~1.32V, boost converter still strong at 3.3V output. The clear cover to the case is showing signs of yellowing but otherwise the PCB & components look fine. Smoking a pork butt today. Quote Link to post Share on other sites
spirilis 1,265 Posted December 1, 2014 Author Share Posted December 1, 2014 Each AA battery showing ~1.15V now fwiw. Vcc rail still shows 3.3V and it's still reporting in. vinicius.jlantunes 1 Quote Link to post Share on other sites
Lgbeno 189 Posted December 2, 2014 Share Posted December 2, 2014 Awesome project! I think that every time that I talk to someone about imp.guru, the same topic comes up... I need that for my smoker. Have you thought about pushing the temp data out to data.sparkfun.com as well? Quote Link to post Share on other sites
spirilis 1,265 Posted December 3, 2014 Author Share Posted December 3, 2014 Awesome project! I think that every time that I talk to someone about imp.guru, the same topic comes up... I need that for my smoker. Have you thought about pushing the temp data out to data.sparkfun.com as well? I haven't ..... not sure what that gets me. My current setup gets data posted to a webpage on my home server where I pull it from my phone. Quote Link to post Share on other sites
TINatalie 0 Posted December 3, 2014 Share Posted December 3, 2014 @@spirilis Would you be interested in having your project featured in a project spotlight blog post on TI's Maker/DIY blog ? Email me directly: nnelms@golin.com http://e2e.ti.com/group/launchyourdesign/b/blog/default.aspx Quote Link to post Share on other sites
Lgbeno 189 Posted December 5, 2014 Share Posted December 5, 2014 I haven't ..... not sure what that gets me. My current setup gets data posted to a webpage on my home server where I pull it from my phone. Good point, I don't think that you would get much additional from doing it except that you could share the results with others or view the data outside of your LAN. Those reasons aren't too compelling though. Quote Link to post Share on other sites
spirilis 1,265 Posted December 5, 2014 Author Share Posted December 5, 2014 Good point, I don't think that you would get much additional from doing it except that you could share the results with others or view the data outside of your LAN. Those reasons aren't too compelling though. Oh yeah and my home server has a public IP & DNS, so I can check the data from outside the home too Quote Link to post Share on other sites
spirilis 1,265 Posted December 31, 2014 Author Share Posted December 31, 2014 Had to change the batteries today. Hadn't seen data for a week or 2. Batteries leaked electrolyte, had to clean the battery holder contacts before it'd work again with new batteries. So that's 2 years and a month or so. Quote Link to post Share on other sites
dubnet 238 Posted January 1, 2015 Share Posted January 1, 2015 @@spirilis do you have an extra pin avaialbe on your MCU for an electrolyte detector? Would save on the battery holder cleanup... Quote Link to post Share on other sites
spirilis 1,265 Posted January 1, 2015 Author Share Posted January 1, 2015 @@spirilis do you have an extra pin avaialbe on your MCU for an electrolyte detector? Would save on the battery holder cleanup... Hehe... I do have some GPIO's broken out to an "expansion" header but all go through an inline 1K resistor array. One thing I wish I'd included is an ADC pin going to the raw battery rail. The circuit uses a TPS61221 for its Vcc rail. (Routing on that was much better since I had plenty of space to work with btw ) Quote Link to post Share on other sites
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