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  • loglow's Avatar
    01-13-2020, 05:42 AM
    Here's an update! A new revision is all routed up and ready to go. I stuck with my previously-posted layout and overall size of 14.5 x 25.5 mm: Here's the current pinout:
    23 replies | 520 view(s)
  • loglow's Avatar
    01-13-2020, 05:06 AM
    Yes, this is very cool. I'm pretty sure at this point that the Teensy bootloader chip will be optional. I've just picked up an LPC-Link2 board (aka Embedded Artists EA-XPR-200, only costs $20) for future (hopefully...
    23 replies | 520 view(s)
  • loglow's Avatar
    01-13-2020, 05:01 AM
    Thanks! Perhaps you'd like to be a beta tester?
    23 replies | 520 view(s)
  • loglow's Avatar
    12-31-2019, 04:26 AM
    Nah, I'm not into selling stuff that I don't have on-hand yet. They'll go up on Tindie when they're actually ready to ship. Timeframe for assembly is ~1 month. In the meantime, if you're interested in buying a kit or...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-31-2019, 03:52 AM
    So, I think with USB, SD, and CAN all confirmed good, I'm about ready to pull the trigger on the first batch of kits. Any last-minute thoughts or feedback?
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-31-2019, 03:50 AM
    Awesome! :D Thanks
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-31-2019, 03:47 AM
    I've ordered them from PCBWay (pcbway.com) and ALLPCB (allpcb.com). At a quantity of 100 pcs, the latest batch was $0.68/pc from ALLPCB. They don't quote flex cables online, you have to email them. You can quote...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-30-2019, 04:03 AM
    Sure thing :)
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-29-2019, 08:23 AM
    This is great feedback so far! I'm glad everything seems to be working as it should be. Regarding the kits, I'm planning to have them come pre-assembled (soldered) with the following parts populated: C1 - 100uF...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-27-2019, 09:36 AM
    At the moment, it's just 100% solder mask (blank), no components. However, I might add (JTAG + power + USB) test points to facilitate programming with a pogo pin fixture.
    23 replies | 520 view(s)
  • loglow's Avatar
    12-27-2019, 09:33 AM
    So, I haven't tried re-routing this yet, but I do like the new layout and size. I removed the exposed pad on the QFN after doing some research (https://www.nxp.com/docs/en/engineering-bulletin/EB806.pdf,...
    23 replies | 520 view(s)
  • loglow's Avatar
    12-27-2019, 06:53 AM
    This might be an ignorant response on my part, and this question may have already been discussed elsewhere, but... upon first glance: Wouldn't a momentary switch (going to GND) connected to the signal between the...
    23 replies | 520 view(s)
  • loglow's Avatar
    12-26-2019, 09:06 AM
    Well, I had a change of heart about this, for a few reasons, including those you mentioned. Mostly, the added complexity of using both modules together (T2M + a seperate bootloader board) and an end user needing to hook...
    23 replies | 520 view(s)
  • loglow's Avatar
    12-25-2019, 12:58 PM
    Because they’re not yet capable of initializing an off-the-shelf i.MX RT1062. PJRC has a custom fixture to do it at the moment. Paul has said he is planning to update the bootloader code to support new chip...
    23 replies | 520 view(s)
  • loglow's Avatar
    12-25-2019, 10:52 AM
    I'm thinking of something like this for the bootloader board. This is 12 x 6 mm. The pads are a bit larger, 0.5 mm drills with a 1.5 mm pitch. This one could be easily made with the cheapest PCB tolerances too.
    23 replies | 520 view(s)
  • loglow's Avatar
    12-25-2019, 08:28 AM
    Thanks! :) I think you make a very good point here. They were another size/convenience compromise, but they take up too much space for the amount of convenience they provide (not much). I've removed them for now....
    23 replies | 520 view(s)
  • loglow's Avatar
    12-25-2019, 01:22 AM
    My local post office hardly ever scans packages, so the first scan will usually be from the sorting center in Springfield, MA a few days after they've been dropped off. It's annoying, but at this point I expect it.
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-25-2019, 01:06 AM
    I've been working on this as a tangent, and it's time for me to get some feedback (and help) if anyone is interested. Here goes. Note: This is not a finished/working project, but rather a work-in-progress. ...
    23 replies | 520 view(s)
  • loglow's Avatar
    12-24-2019, 09:27 AM
    Likewise! I'm happy that the latest beta boards to go out are timed nicely to be holiday presents :)
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-22-2019, 03:58 AM
    All the new boards (and parts, as requested) were shipped out today!
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-14-2019, 09:53 AM
    Yeah... so... this is why I need to stop ordering PCBs at 4 AM... Now that I see it, I know exactly why I made this mistake too! I think I'll keep the flex cable as-is and fix this on the breakout PCB, like this:...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-12-2019, 09:35 AM
    For what it's worth, the PCBs do (supposedly) go through electrical testing via automated flying probe machines at the board house, in order to weed out any defective ones before they're shipped.
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-12-2019, 09:30 AM
    Oh, you're lucky. We had one RadioShack here in western MA for a while. Then it closed and re-opened as BRW Electronics (I think that's what it was called?) which was only open for a year or two before closing. I don't...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-12-2019, 09:12 AM
    Thanks for the report, and I'm glad to hear that it mostly went well. I'm very curious to see photos of the socket issue, because I just assembled one with the socket kit and it went pretty smoothly. Now I'm going to go...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-12-2019, 09:04 AM
    You're welcome! They're in-progress. I'm experimenting with Dozuki's free offering (think iFixit) for step-by-step instructions with photos. This happens to me all the time. And every time I think "I'll be...
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-12-2019, 08:50 AM
    Yes, very much so! As you can see from the replies, it's in the second round of beta testing right now.
    402 replies | 24305 view(s)
  • loglow's Avatar
    12-08-2019, 11:26 AM
    Hey Paul, thanks for the quick reply. Appreciate it! I'm very eagerly awaiting the updated bootloader for one of my projects.
    2 replies | 83 view(s)
  • loglow's Avatar
    12-08-2019, 10:26 AM
    Hi there, I'm wondering if the Bootloader Chips for sale on the PJRC store (part number IC_MKL02Z32_QFN16, https://www.pjrc.com/store/ic_mkl02.html) support booting the Teensy 4.0 (aka the NXP i.MX RT1062 chip)? I...
    2 replies | 83 view(s)
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T2M, an Embeddable Teensy Module (WIP) 01-13-2020 05:42 AM
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01-28-2013