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  • EEVblog #266 – Mailbag

    Posted on April 9th, 2012 EEVblog 30 comments


    http://www.energymicro.com/tools/efm32-tiny-gecko-starter-kit
    Another mailbag episode. What’s in Dave’s PO Box?
    And can the uCurrent make music?

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    30 responses to “EEVblog #266 – Mailbag” RSS icon

    • The quote is from Army of Darkness. “This is my Boomstick!”

    • Also, I get that crap from Domain Renewal Group as well.

      • There seems to be a domain renewal group scam company in every country these days. They’re completely funded by fooling companies into paying them thinking they’re the guys who sold them the domain name.

        Not sure if they actually do anything like transfer your domain to them or just take your money and run.

        Just plug their name into Google and it shows it’s all one big ass scam.

        • I do believe the one I got is legitimate, as they have been going a long time, and I heard were forced to change their wording to look less like your current domain provider.
          They just charge a lot.

    • Not sure if it is due to lighting or the angle of the camera, but it seems the LCD was pressed hard in the center (the package was abused during shipping, maybe???).

    • Dave, there is a tiny gecko on the IC!

    • The lighted coaster guy probably had those chips pre-programmed at the distributor. Digikey, for example, will do that for some programmable devices.

    • Here’s the gecko Dave!

      http://dl.dropbox.com/u/12774933/IMAG0225.jpg

      Its even a touch button!

      And when you press it, a little gecko is shown on the display :D

      • The touch-gecko had to go because of too few pins on the (pain in the @ss)qfn64-package. Not sure why we didn’t put a silkprint-gecko there though, maybe on the next spin. There is a nice silkprint-gecko on the bigger development-kit at least.

        The gecko on the display actually shows when you put a finger on the light-sensor, similar to the touch-gecko on the G890 starter-kit.

    • Dave, It would have been cool if you had fired up the current measurement system on the efm32-kit, compare it with your uCurrent for example. (Which you should make many more of btw, we want one here in Norway.)

      Anders (Energymicro)

    • Dave, I am not affiliated with Energymicro, but working on this platform for a while…

      You missed the LC sensor at the bottom right (for detecting metal nearby) and the opamp footprint at the back is to provide access to the builtin opamp!

      Also, the J-Link can be used as a JTAG-SWD programming dongle for your own board thru the JTAG connector!

      And yes,the announced consumption are real!

    • Had no idea there was a firm developing microcontrollers here in Norway! If it weren’t for an aversion to ARM architectures, I’d pick one up.

      (Yeah, I know about Nordic Semiconductors; wonderful products, too, but not really micros.)

    • What’s the edge of the v-scored uCurrent PCBs like compared with the old routed one? Noticeable?

    • The picture for the EFM32-G8xx-STK kit ($74.25 USD) on the Mouser page shows it commes with a USB cable. Did I miss the one that came with your kit? Let us know how this board flies USB only and how crippled the IDE is.

      I believe IAR Embedded Workbench for ARM quits after 30 days; then it’s time to bend-over (big-time!)

      Given the relatively high cost of this dev. board, adding a pricy Segger dongle isn’t an option. Slath a layer of IAR EW license cost on top – and I think this stack of stuff is outside the realm of the typical experimenter in terms of cost.

      • Actually the kickstart edition of IAR is only code-size limited to 32K. Which incidentally is the size of the flash on the “tiny gecko” mounted on the kit. You won’t notice any limitations and no 30-day expiration.

        Keep in mind that the $70 also gives you an accurate current-consumption- and code-profiler and a J-link adapter (only for EM-devices though). But I agree, this might not be within the budget of the typical experimenter.

    • Hey Dave,
      just in case you’re still interested in what kind newspaper it was: it seems to be a small local newspaper in the town of Gerbrunn in central Germany. So if you want to know when you have to keep the pavement in front of your house free from snow or how that meeting was between pre-school children and Gerbrunns elderly people then that’s the place to check ;). Seems like the only purpose why it’s printed is to use it as package material when sending something to Australia… ;). Keep up the great work, you made me love electronics. Cheers from Austria

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