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  • brtaylor's Avatar
    06-14-2019, 03:35 PM
    Completely depends on what your requirements are. We don't know the accuracy that you need to measure current or the expected current range. The click board isn't doing anything magical - it's simply buffering the...
    2 replies | 76 view(s)
  • brtaylor's Avatar
    06-13-2019, 01:42 PM
    The ATmega 328 and similar are great through-hole packages as well - very straightforward to design a working PCB and you can stick with hand-soldering through-hole parts. The reference manual is relatively short and...
    9 replies | 166 view(s)
  • brtaylor's Avatar
    06-11-2019, 07:43 PM
    Yes, that's what's needed.
    9 replies | 159 view(s)
  • brtaylor's Avatar
    06-11-2019, 06:13 PM
    Simply use one of the other bus objects, i.e. Wire1 instead of Wire.
    9 replies | 159 view(s)
  • brtaylor's Avatar
    06-05-2019, 05:37 AM
    Thanks for that bit of information!
    77 replies | 25552 view(s)
  • brtaylor's Avatar
    06-04-2019, 09:35 PM
    Trying out MTP Responder. Shows up fine on Windows 10 using a Teensy 3.6 with the built-in SD running MTP Blinky with the patch mentioned in the PR applied. I can create folders, but not rename them (i.e. I can make...
    77 replies | 25552 view(s)
  • brtaylor's Avatar
    05-31-2019, 05:10 PM
    It definitely takes a bit of work to get FreeRTOS working on Teensy 3.x since it has not been maintained. I also had issues getting floating point math to work on Teensy 3.5 and 3.6 and, ultimately, shelved that...
    3 replies | 102 view(s)
  • brtaylor's Avatar
    05-30-2019, 06:39 PM
    Are you asking because of servos? Anecdotally, all seem to be fine with 3.3V logic, even on high voltage supplies.
    6 replies | 130 view(s)
  • brtaylor's Avatar
    05-28-2019, 04:55 PM
    Yes, I've used the PJRC MKL02 for several projects where I needed to meet specific temperature ranges or access to pins not available on the Teensy board. It's allowed by PJRC and one of the great ways they support...
    6 replies | 195 view(s)
  • brtaylor's Avatar
    05-27-2019, 04:35 PM
    At least the processor and bootloader are rated for -40C; both the MK64FX512VMD12 and MKL02Z32 are -40C to 105C temperature rated. So you could roll your own Teensy 3.5 hardware design that is compatible with Teensy...
    6 replies | 195 view(s)
  • brtaylor's Avatar
    05-25-2019, 04:40 PM
    brtaylor replied to a thread Emmc in Project Guidance
    Got a little test setup - an EMMC breakout to a micro-sd card adapter. Tested on windows via a micro-sd to USB converter I have and it shows up as a USB drive and formats correctly. Plugged into the Teensy 3.6...
    15 replies | 328 view(s)
  • brtaylor's Avatar
    05-25-2019, 03:49 PM
    brtaylor replied to a thread uBlox Library in General Discussion
    A couple of ways I can think of at the moment: 1. You could look at the fix type and ensure that you have a time fix or better (i.e. 2D or 3D). 2. You could look at the isValidDate() flag and the isConfirmedDate. If...
    110 replies | 16467 view(s)
  • brtaylor's Avatar
    05-22-2019, 09:38 PM
    brtaylor replied to a thread uNav INS in General Discussion
    I'm too busy with client projects at the moment.
    678 replies | 128165 view(s)
  • brtaylor's Avatar
    05-18-2019, 08:17 PM
    brtaylor replied to a thread Emmc in Project Guidance
    That's pretty cool! I'll have to play around with the library. I see some PCI to USB interface controllers on DigiKey, seems like I may be able to put a PCI slot on my boards and then use a M.2 2242 type of an SSD....
    15 replies | 328 view(s)
  • brtaylor's Avatar
    05-18-2019, 02:55 PM
    brtaylor replied to a thread Emmc in Project Guidance
    I'm using several GB; although, right now that's being compressed and I'm being selective about data because I'm limited to a 1 MBaud connection between the SBC and Teensy. Certainly with a higher bandwidth connection,...
    15 replies | 328 view(s)
  • brtaylor's Avatar
    05-18-2019, 01:39 AM
    brtaylor started a thread Emmc in Project Guidance
    Apologize in advance for a more rambling post than usual. Just finished one project and thinking about options for the next. I need to do some more research and hoping to jump start my lack of knowledge from the minds...
    15 replies | 328 view(s)
  • brtaylor's Avatar
    05-17-2019, 05:16 PM
    The backpacks are meant to work with each other. So, on the dual backpack you could have an SBUS Backpack next to a GNSS Backpack, for example, and have the total stack height less than using the Solo Backpack. The...
    44 replies | 3880 view(s)
  • brtaylor's Avatar
    05-12-2019, 04:13 PM
    brtaylor replied to a thread uBlox Library in General Discussion
    Good! Glad it's working well for you. Brian
    110 replies | 16467 view(s)
  • brtaylor's Avatar
    05-11-2019, 03:39 PM
    brtaylor replied to a thread uBlox Library in General Discussion
    My latest and greatest is typically on GitHub, so this one should work fine: https://github.com/bolderflight/UBLOX It shows printing several values, but a full list of available methods to get data is located here:...
    110 replies | 16467 view(s)
  • brtaylor's Avatar
    05-07-2019, 10:35 PM
    Read up on byte padding and structure member alignment. If you really care about how data is aligned and need it to stay aligned across different devices, you should really define an unsigned char array and assign the...
    5 replies | 115 view(s)
  • brtaylor's Avatar
    05-06-2019, 04:58 PM
    brtaylor replied to a thread SBUS Library in General Discussion
    You should just do readCal once and then print all the channels in succession. This line: x8r.readCal(&channels, &failSafe, &lostFrame) is just passing the addresses of the channels array, fail safe...
    47 replies | 10504 view(s)
  • brtaylor's Avatar
    05-05-2019, 05:24 PM
    brtaylor replied to a thread SBUS Library in General Discussion
    Hi John, Typically, people will estimate non-dimensional coefficients to model the aircraft dynamics. One part of that process essentially normalizes the data by the airspeed. The mass properties of the aircraft...
    47 replies | 10504 view(s)
  • brtaylor's Avatar
    05-05-2019, 04:54 PM
    brtaylor replied to a thread SBUS Library in General Discussion
    Yep, the Teensys can do inverted logic and the library is handling all of that for you.
    47 replies | 10504 view(s)
  • brtaylor's Avatar
    05-05-2019, 04:49 PM
    brtaylor replied to a thread SBUS Library in General Discussion
    What are you accomplishing with the N3904 and resistors? Should work fine with the SBUS receiver directly connected to the Teensy.
    47 replies | 10504 view(s)
  • brtaylor's Avatar
    04-26-2019, 05:59 PM
    brtaylor replied to a thread SBUS Library in General Discussion
    Looks like Oct 31, 2018.
    47 replies | 10504 view(s)
  • brtaylor's Avatar
    04-26-2019, 04:37 PM
    brtaylor replied to a thread SBUS Library in General Discussion
    Cool photos, thanks for sharing! I really like Osh Park for 2 and 4 layer boards, if you end up needing the extra complexity. Osh Stencils are nice for cheap stencils - my preference is their stainless stencils and...
    47 replies | 10504 view(s)
  • brtaylor's Avatar
    04-25-2019, 12:37 AM
    brtaylor replied to a thread SBUS Library in General Discussion
    Easy peasy. My SBUS library can directly give you pilot inputs. If you use the readCal function, you can get these so that full stick deflection is +/-1 on each channel. It sounds like you're attempting to do some...
    47 replies | 10504 view(s)
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