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Everything posted by Lgbeno

  1. I'm game for a few posts (time permitting). Would love to write about the new sensor node. I know @@cubeberg has a project to blog about too Sent from my iPhone using Tapatalk
  2. Lgbeno

    Energy harvesting

    Cheap regulators often have high quiescent current so I would look into that. Also in solar, some special consideration needs to be given for the MPPT of the solar panel because the panel will stop producing power if it's voltage is pulled too low. By far the cheapest way to do this is with the $1 solar light and the boost converter method. The ASIC inside the solar light handles the MPPT and NiMh charging, then the boost gives your circuit the right voltage. SuperCaps don't really store as much energy as batteries and they are more expensive. They are arguably more reliable for larg
  3. Lgbeno

    Energy harvesting

    Have you looked at this thread? http://forum.43oh.com/index.php?/topic/8274-Cheap-solar-battery-%2B-wireless-IoT-node Many of these solar lights use either a AAA or AA NiMh battery that charges to around 1.2V. This voltage can be easily be boosted to 3.3V. In the direct sunlight I got about 85mW of power from the panel which should be plenty for a sensor node. The 2.7v supercap is inconvenient unless you run your whole circuit at 2.7V. Sent from my iPhone using Tapatalk
  4. I doubt it, if anything maybe they will go down. Supplyframe revenue comes mostly from advertising afaik Sent from my iPhone using Tapatalk
  5. I think that the only path forward is to get started You'll find out quickly what needs to be optimized and what is "good enough"
  6. CCS is free too, dont worry about IAR. You need to control code size by writing writing efficient code regardless of compiler. How much research have you done on this project? What is your background/education? Sent from my iPhone using Tapatalk
  7. Sorry the adaptor is required. Wireless kits use a different connector standard based on 1mm headers instead of 2.54mm headers. Sent from my iPhone using Tapatalk
  8. MSP430FR5969 also has AES so that brings you to the difference between cc1200 and cc1120 is 2dB of Tx power. If I were you I would do CC1200 and push the limits on range as far as possible with that extra 2dB.
  9. A quick glance shows that the two major differences are that CC1200 adds an AES-128 Accelerator and has 2dB extra Tx power. If you don't care about cost, just do CC1200 it is a superset of CC1120 and you can always pair down your code to move to CC1120.
  10. You're lucky. Buy all of these: http://www.digikey.com/product-detail/en/CC1120EMK-868-915/296-30208-ND/2749371 http://www.digikey.com/product-detail/en/BOOST-CCEMADAPTER/296-36889-ND/4379861?WT.mc_id=IQ_7595_G_pla4379861&wt.srch=1&wt.medium=cpc&WT.srch=1 http://www.digikey.com/product-search/en?KeyWords=MSP-EXP430FR5969&WT.z_header=search_go and if you want to do cc1200, add this: http://www.digikey.com/product-detail/en/CC1200EMK-868-930/296-36407-ND/4271563 Each node will cost you $95 You can use Energia with this setup but it is not plug and play by any
  11. Doesn't really matter, you'll just need to think about how much money that you want to spend and how that you will construct your test setup. These radios are geared toward this kit http://www.digikey.com/product-detail/en/CC1200DK/296-36405-ND/4271561 The kit comes with CC1200 modules and you can buy the cc1120 modules for another $99 With these kits it will be difficultto use anything besides the built in MSP430F5438A. Alternatively http://www.digikey.com/catalog/en/partgroup/cc1200-evaluation-module-kit-420-470mhz/40641 has pin headers that you can wire to whatever you want.
  12. I guess that I don't understand what you are asking for? http://www.digikey.com/catalog/en/partgroup/cc1200-evaluation-module-kit-420-470mhz/40641 http://www.ti.com/tool/CC1120EMK-868-915 Sent from my iPhone using Tapatalk
  13. Ahh I'm actually doing something sneaky with this http://forum.43oh.com/index.php?/topic/8750-New-MSP430-Wireless-Sensor-Node It is possible Sent from my iPhone using Tapatalk
  14. I'm happy for Emile as well and think that it is a smart move for Supply Frame. Based on what they did with Hackaday I think Tindie will have a bright future. I don't know what other peoples impression is but ai felt like tindie stagnated a little over the last 3-4 months. I would really like to see them focused on driving more traffic to the site and helping sellers sell more. Sent from my iPhone using Tapatalk
  15. I think that there would be interest in that. Personally I wouldn't want to draw that attention to myself butI would like to correlate intensity of the crown sounds with events that occur in the football game. For example the roar during critical plays, touchdowns, interceptions, etc. I'd probably make it connect to a smart phone, I've done quite a bit of expiration with BLE lately.
  16. Well boards have arrived and I started building them up. So far I have 2 of them built up and tested. Now the real work begins in writing Energia libraries! One change that I'm pondering is changing the connector pinout slightly to support this configuration and take power from the launchpad: Sent from my iPhone using Tapatalk
  17. I received my light today and had to check out the fit for the MSP430 sensor node that I also received and built up. Looks like a decent fit. Now if only I had more time figure out how to connect the PIR and control the LEDs with the MSP430! Sent from my iPhone using Tapatalk
  18. Cool, I'm interested in the sound level sensor. I'd like to make an IoT SPL meter to bring to football games! Sent from my iPhone using Tapatalk
  19. Back when I was trying to make a quad copter I found Hobby King to have the best value parts Sent from my iPhone using Tapatalk
  20. Yes its possible and most or the time you can use the standard board settings as your own. There have been some discussions on how to create a pins_energia.h file but no tidy tutorial afaik Sent from my iPhone using Tapatalk
  21. Kinda coincidental, my family and I are taking a vacation in Door Co WI where there are a few Harbor Towns on Lake Michigan. Taking a stroll down the docks and what do I see: Would make a good foot traffic counter! Sent from my iPhone using Tapatalk
  22. I thought about bit banging more, at best I think that I can get a write down to 4 instructions which would limit the clock freq to 4MHz: Write miso&clock bit Read mosi bit Write clock Shift This is a pretty ideal case and still violates timing. Best to just use USCI B0. Sent from my iPhone using Tapatalk
  23. Haha, It looked bigger in the first listing! My new board is 2.25x0.95 inches (57.20x24.13 mm) and about 3.5mm thick with the connector. The 3.7v battery is somewhat high for the circuits. Nothing a series Diode couldn't fix. There is one on the board, just need to remove the boost converter chip. Sent from my iPhone using Tapatalk
  24. Thats a pretty cool teardown. If only he knew the IR codes to make it light up again. Sent from my iPhone using Tapatalk
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