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  1. All, We made a board in Eagle for the circuit...

    All,

    We made a board in Eagle for the circuit and have soldered it up and it works. It's the same circuit. I don't know what the difference is, go figure. But it works now and I am moving forward....
  2. Okay guys, thanks for hangin in there with me. I...

    Okay guys, thanks for hangin in there with me. I will probably get the oshpark board or whip up a proto board on Eagle. Is there a BOM for the oshpark board? I didn't see one. I have a proto board...
  3. Hi Loren42, be mindful that this is just a "proof...

    Hi Loren42, be mindful that this is just a "proof of concept", and is not yet a "manufactured" board. It is just in the breadboarding stage. Perhaps tolerances are so tight that a breadboarding proof...
  4. Thanks guys for all of your helpful notes. Here...

    Thanks guys for all of your helpful notes. Here is where things stand currently:

    I removed the chips from the zif sockets and soldered them onto adapter breadboards. Everything was wired back up...
  5. Okay, I put decoupling caps at each VDD location...

    Okay, I put decoupling caps at each VDD location on the MK20, plus one on the VOUT33 pin 7 on the MK20. I still cannot get a USB connection. Should I be able to see any data on the USB lines, even...
  6. Thanks guys for your prompt response! Paul - I...

    Thanks guys for your prompt response!

    Paul - I have checked the connections again and they still appear to be correct. Checked for shorts and continuity. With respect to the pin 4 thing, should...
  7. Using the MKL04 bootloader chip in DIY circuit to program MK20DX256VLH7 (Teensy 3.2)

    I have recently purchased two of the MKL04Z32_TQFP32 chips from PJRC to program a DIY circuit using the MK20 (Teensy 3.2) chip. It will not connect to the USB on the PC. I have gone through the...
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