SeeCat

Member Since: February 23, 2010

Country: United States

  • Product PRT-12080 | about a month ago

    Replacing the original (5v) min/step/max of 17/40/496 with 18/42/522 did the trick; the keys all decode perfectly now. Wondering if there is a way to have the Arduino auto-calibrate itself so these settings could be generated automatically as part of initialization? Also curious why your development keyboard varied from my production keyboard so much since the divider circuit on both boards is coming from a well regulated 5v source.

  • Product PRT-12080 | about a month ago

    The results were about the same with min/step/max of 21/43/496. The ADC readings are as follows: No Key - 10, K1 - 504, K2 - 462, K3 - 420, K4 - 378, K5 - 336, K6 - 293, K7 - 251, K8 - 209, K9 - 166, K10 - 124, K11 - 82, K12 - 40. Plugging those into the spreadsheet and it shows min/step/max of 18.9/40/497.9 so I used 19/40/498 with similar results. Something still not right here.

  • Product PRT-12080 | about 2 months ago

    Hooked this up and am having trouble with the default library settings. Basically the 1 key doesn’t register a key press at all, 2 key reports as 1, 3 reports a 2, 4 reports 3, 5 reports 4. Then there is a gap (no 5 key), and the 6 key through 12 key work fine. I’m running this on a RedBoard with a measured Vcc of 4.987 volts. Looks like the VScaleKey table may need to be tweaked further for production variances. Here are the Vout readings for each key: 1 - 2.488v, 2 - 2.280v, 3 - 2.073v, 4 - 1.867v, 5 - 1.660v, 6 - 1.453v, 7 - 1.246v, 8 - 1.038v, 9 - 0.831v, 10 - 0.623v, 11 - 0.414v, 12 - 0.207v, Open - 0.061v. Is anyone else having similar problems with this board?

  • Product LCD-10097 | about 2 months ago

    Was looking for an enclosure to fit these 2x16 LCD’s and found an “MDT-65” ABS plastic box on eBay that fits perfectly. Seller has them available in both black and white and the mounting holes line up perfectly for this display with enough room to mount the entire assembly. Use M2.5 self-tapping screws to attach the LCD PCB to the enclosure.

  • Product LCD-11742 | about a year ago

    Mouser sells the Arduino shield (971-ARDUINOADPTRSHLD) and RPi adapter (971-4DSERIALPIADPTR) separately if you need them. They are inexpensive because they only pickup power and the serial port (4 wires) … everything else resides on the display module.

  • Product BOK-10324 | about 2 years ago

    My copy has the same problem too … everything printed in italics is unreadable. Very frustrating and difficult to figure out what the heck is going on. I called O'Reilly and complained and they sent a replacement book (free) that was printed correctly. I’m a happy camper now, but these books should have never left the publisher and been sent directly to recycling. Also, the electronic copy (PDF) of this book is up-to-date and displays the italic text correctly. SparkFun should check their physical inventory and return any defective books back to O'Reilly for replacement.

  • Product CLS-11069 | about 2 years ago

    Hey, what’s the song at the end of the course preview video above? Kind of reminds me of my old lady. : )

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