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vinicius.jlantunes

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  1. Like
    vinicius.jlantunes reacted to bluehash in TI-EStore New Year   
    Details on the blog.
    Coupon: 432@432
    Shipping is flat $7, but you can order a maximum of 100 boards.
  2. Like
    vinicius.jlantunes got a reaction from Fmilburn in PartsBox.io - tool to manage your parts inventory online   
    I posted a review of PartsBox.io to my Youtube channel, for anyone interested. It's a nice tool I stumbled upon a while ago when I was organizing the lab and looking for a better way than Excel to keep parts inventory.
     

  3. Like
    vinicius.jlantunes got a reaction from bluehash in PartsBox.io - tool to manage your parts inventory online   
    I posted a review of PartsBox.io to my Youtube channel, for anyone interested. It's a nice tool I stumbled upon a while ago when I was organizing the lab and looking for a better way than Excel to keep parts inventory.
     

  4. Like
    vinicius.jlantunes got a reaction from Fred in PartsBox.io - tool to manage your parts inventory online   
    I posted a review of PartsBox.io to my Youtube channel, for anyone interested. It's a nice tool I stumbled upon a while ago when I was organizing the lab and looking for a better way than Excel to keep parts inventory.
     

  5. Like
    vinicius.jlantunes reacted to bluehash in Oct 2015 - 43oh Halloween Contest   
    Hi Team,
    If you are keeping a close watch on @@enl's Halloween projects, anyone? thread, we created a small contest. This is a little late in the month.. but there are prizes to be had!
    Showcase your Halloween project here..whether it is a costume or anything done at home to scare people.
     
    How To Enter
    To submit your entry, make an entry into this thread with the following:
    Start a build thread in any of the following Project subforums - MSP, Tiva-C, CCXXXX, C2000 or BeagleBone. This will enable members to ask you questions and comment on your project. Please post: a small description of your project. a picture or video of your setup Code. Schematic and/or board files. In this thread, post a small description of your project. a picture or video of your setup.  
    Prizes
    The winners will get to choose any prize from the pool in order of 1st, 2nd, 3rd, 4th..etc. Thanks to @@abecedarian for sponsoring the prizes.
    Radio Shack Motor Pack, value = $39.95 USD (donated by abecedarian) WIZwiki W7500, value = $45.00 USD (donated by abecedarian) RaspPI B+(donated by abecedarian) Your choice of $25 giftcard from Sparkfun, Adafruit or anyplace that sends giftcards electronically. I can even Paypal it to you if you are not interested in a card. Same as above, but $20. Dev board from TI <$20. Dates
    - Voting begins on Nov 1st.
    - Entries due October 31st.
     
    Rules :
    - You must be a member of the 43oh forum at least a week before your submission or have at least 5 posts in the forums, for your entry to be considered when the voting begins.
    - One entry from each member will be permitted.
    - Your design has to be open source. if you can, select a license from here or here. 43oh will not claim any ownership.
    - Your project can be anything based around TI Micro-controllers. You may interface any of TI's controller to another controller. But try to keep TI as the main controller.
    - You may reuse code from anywhere as long as you give credit to the original author.
    - You must submit code and schematics of your project with a proper description.
    - You can submit your project, if it was created before the announcement of the contest.
    - Previous entries in other 43oh contests will not be permitted.
  6. Like
    vinicius.jlantunes got a reaction from Fmilburn in SMD soldering practice kit - assembly   
    I gave it another try with another board, now using solder paste + hot air gun. There is always room for improvement but it was a much better result!!
     
    @@greeeg, yeah I have a bunch of boards I accumulated over the years for salvaging components, filled with SMD parts. Thanks for the tip, will definitely use them at some point for further enhancing my poor soldering skills! 
     

  7. Like
    vinicius.jlantunes reacted to Lgbeno in analog.io 2015 Hackaday Prize Update   
    So I didn't make it to the next round, but thanks to everyone here on 43oh for the awesome support and help along the way!
     
    I posted my update here with some thoughts: https://hackaday.io/project/4648-analogio-a-full-stack-iot-platform/log/26290-didnt-make-it-to-the-finals
     
    In some ways it is a relief but would have been really cool to go all of the way.  I'm currently seeing if any of the finalists want to collaborate and use analog.io as their cloud data service, we'll see what happens next!
     
    Also, in addition to the MSP430 Sensor node, I'm also finishing up an AVR based one.  Some people just really prefer Arduino and AVR, don't want to discriminate!
     
    -Luke
     
     
  8. Like
    vinicius.jlantunes reacted to greeeg in SMD soldering practice kit - assembly   
    I've used old e-waste to train my soldering skills. un-soldering SMD parts then re-soldering them back.
     
    Ironically Solder-braid at my local electronics store is ~$5, more expensive than that training board
     
     
    Going this way also trains your un-soldering skills So you could do things like this:

  9. Like
    vinicius.jlantunes reacted to abecedarian in SMD soldering practice kit - assembly   
    Sorry. I don't visit youtube very often. 
    But thanks!
  10. Like
    vinicius.jlantunes reacted to enl in SMD soldering practice kit - assembly   
    Better than my first experience with the 0603 by hand. To the extent that I do anything this size by hand (not much as I am too shakey and my eyes are shot), I use a solder paste rather than wire. Holds the component in place, easier to get the appropriate quantity, and leaves my other hand free to hold the component down with a dental pick so I don't displace it. I would definitely suggest getting several small tips, both points and chisel end.
     
    If you want to experiment with tip shape, file an old tip to the shape you want to try. It won't last too long once filed, as the core alloy-- usually copper based-- will erode from heat driven oxidation and flux action, but it is a good way to try different point geometries before buying new tips.
  11. Like
    vinicius.jlantunes got a reaction from greeeg in SMD soldering practice kit - assembly   
    I've put one more video in my Youtube channel, this time it's me soldering a SMD soldering practice kit I got off Aliexpress for 1 dollar.
    I can definitely improve my skills!
     
    Go ahead and watch, even if only to laugh at me
     

  12. Like
    vinicius.jlantunes got a reaction from abecedarian in SMD soldering practice kit - assembly   
    @Fmilburn: I do own one of these WEP 858D+ (same as Atten 858D+). I bought it after watching Dave Jones review video:
     
    http://www.amazon.com/858D-Station-Soldering-Display-Nozzles/dp/B009PPRJHS/ref=sr_1_1?ie=UTF8&qid=1443819068&sr=8-1&keywords=wep+858d%2B
     
    I can't say I used it a lot, but I did rework a couple chips in a PSU I was attempting to fix and it worked great. I also used it to shrink some shrink tubing and it also worked fine.
     
    I plan on doing a follow-up to my video where I use solder paste and hot air and compare the results. I might get around filming it this weekend, will post here so you know (you can also subscribe to my Youtube channel )
  13. Like
    vinicius.jlantunes got a reaction from Fmilburn in SMD soldering practice kit - assembly   
    @Fmilburn: I do own one of these WEP 858D+ (same as Atten 858D+). I bought it after watching Dave Jones review video:
     
    http://www.amazon.com/858D-Station-Soldering-Display-Nozzles/dp/B009PPRJHS/ref=sr_1_1?ie=UTF8&qid=1443819068&sr=8-1&keywords=wep+858d%2B
     
    I can't say I used it a lot, but I did rework a couple chips in a PSU I was attempting to fix and it worked great. I also used it to shrink some shrink tubing and it also worked fine.
     
    I plan on doing a follow-up to my video where I use solder paste and hot air and compare the results. I might get around filming it this weekend, will post here so you know (you can also subscribe to my Youtube channel )
  14. Like
    vinicius.jlantunes got a reaction from abecedarian in SMD soldering practice kit - assembly   
    I've put one more video in my Youtube channel, this time it's me soldering a SMD soldering practice kit I got off Aliexpress for 1 dollar.
    I can definitely improve my skills!
     
    Go ahead and watch, even if only to laugh at me
     

  15. Like
    vinicius.jlantunes got a reaction from bluehash in SMD soldering practice kit - assembly   
    I've put one more video in my Youtube channel, this time it's me soldering a SMD soldering practice kit I got off Aliexpress for 1 dollar.
    I can definitely improve my skills!
     
    Go ahead and watch, even if only to laugh at me
     

  16. Like
    vinicius.jlantunes got a reaction from tripwire in SMD soldering practice kit - assembly   
    I've put one more video in my Youtube channel, this time it's me soldering a SMD soldering practice kit I got off Aliexpress for 1 dollar.
    I can definitely improve my skills!
     
    Go ahead and watch, even if only to laugh at me
     

  17. Like
    vinicius.jlantunes got a reaction from Fmilburn in SMD soldering practice kit - assembly   
    I've put one more video in my Youtube channel, this time it's me soldering a SMD soldering practice kit I got off Aliexpress for 1 dollar.
    I can definitely improve my skills!
     
    Go ahead and watch, even if only to laugh at me
     

  18. Like
    vinicius.jlantunes got a reaction from bluehash in EKI-LM4F232 evaluation kit unboxing video   
    The other day I recorded myself unboxing this kit I got for a training I am taking, and uploaded it to my youtube channel. In case anyone would like to watch, here is the link:
     

     
    The kit is quite nice, featuring a Cortex M4 processor and a lot of goodies on board (OLED display, accelerometer, temperature sensor, current sensor, etc.). The other nice thing about it is the demo application it comes with, that is basically a data logger that can record all of the things mentioned above (XYZ channels of the accelerometer, current, internal and external temperature) PLUS 4 channels that are connected to the ADC (meaning you have a simple 4 channel oscilloscope out of the box).
     
    Go watch the video if you want to see more :-)
  19. Like
    vinicius.jlantunes got a reaction from Fmilburn in EKI-LM4F232 evaluation kit unboxing video   
    The other day I recorded myself unboxing this kit I got for a training I am taking, and uploaded it to my youtube channel. In case anyone would like to watch, here is the link:
     

     
    The kit is quite nice, featuring a Cortex M4 processor and a lot of goodies on board (OLED display, accelerometer, temperature sensor, current sensor, etc.). The other nice thing about it is the demo application it comes with, that is basically a data logger that can record all of the things mentioned above (XYZ channels of the accelerometer, current, internal and external temperature) PLUS 4 channels that are connected to the ADC (meaning you have a simple 4 channel oscilloscope out of the box).
     
    Go watch the video if you want to see more :-)
  20. Like
    vinicius.jlantunes reacted to Lgbeno in New MSP430 Wireless Sensor Node   
    I've wanted to create a batteries included, very low cost wireless sensor kit for quite a long time now.  I've made some attempts in the past but up until this point they were either too expensive to produce and too limited in expandability.  I think that I've finally struck the balance that I'm going to be pleased with.
     

     
    The device is a little larger than a single AA battery, that is what it is powered off of.  It has an NCP1400 Boost converter to bump up the voltage to 3.3V.  The processor is MSP430G2553IRHB (32QFN) and it is attached to a HopeRF RF75 radio.  There are 15 GPIO available through a 0.1in female header that is sandwiched between the battery holder and the circuit board.  It plugs into a Launchpad for programming.  Footprints are available to solder on a Si7020 temp sensor, a 32kHz crystal and two LEDs.
     
    I have the pins_energia ready and now looking at what it takes to make the @@spirilis enrf24 library work with it.  I'll also create my own library with some analog.io tie ins as well as a special surprise.
     
    My goal is to sell these for $9.99 after I can get them debugged.  Would anyone be interested in one?
  21. Like
    vinicius.jlantunes reacted to Lgbeno in How to solder HTSSOP heatsink without reflowing the board?   
    Many different tricks to do this, the ones mentioned above are good.
    Additionally I recommend using solder paste. Its glorious combination of solder and flux ensures that you get good solder coverage. Handy in whatever solder scenario.
     
    You can do a toaster reflow too, dab on some paste then 2 min at 250 deg f, 3 min at 450 deg F. I use two different toaster ovens that I bought for $5 each at the thrift shop. Works surprisingly well.
     
     
    Sent from my iPhone using Tapatalk
  22. Like
    vinicius.jlantunes reacted to RobG in How to solder HTSSOP heatsink without reflowing the board?   
    I have been using this technique for chips like W5200, W5500, TLC5947, TLC5951, etc., and...
    Make sure you have exposed area under the IC and on the opposite side (tStop and bStop layers)
    Use few 0.023 or 0.027 vias. Those sizes work well with 0.020 solder, I just stick it in the via and touch with iron
    If you use footprints w/o heat pad, make sure you don't have any tracks under the IC.
     

  23. Like
    vinicius.jlantunes reacted to oPossum in How to solder HTSSOP heatsink without reflowing the board?   
    It is possible to do thermal pads without a reflow oven or hot air.
     

  24. Like
    vinicius.jlantunes reacted to spirilis in How to solder HTSSOP heatsink without reflowing the board?   
    I had one of these and I *think* I satisfactorily soldered it...
    The key is to have vias in the thermal pad on the PCB so you can shove your iron on those and help the solder melt.  Solder paste on the thermal pad is a must, and it probably makes sense to spend some time "warming up" the ground plane just outside the chip to make it easier to melt the solder.  Probably a very tiny amount of no-clean flux paste on the chip's pad would help too (I didn't have that at the time).
     
    Perhaps a heat gun under the board would help to "warm up" the ground plane in preparation for the critical soldering-iron-hit that finally melts the solder paste.
    Otherwise, I bet some thermal paste would do the trick well enough assuming the thermal pad isn't also relied upon heavily for the chip's GND reference, which it might be.
  25. Like
    vinicius.jlantunes reacted to bluehash in New MSP-EXP430FR6989 128KB FRAM Launchpad Discounted to $13.99   
    Hold on guys. Yes, shipping kind of hurts... TI definitely knows about this and is looking into it.
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