Forum Rule: Always post complete source code & details to reproduce any issue!
Tab Content
  • chileflora's Avatar
    02-07-2020, 11:32 PM
    I obviously have seen them and that would make it like a Teensy 3.2/4.0. I loved the long 3.5/3.6 Teensy due to the number of workable pins! One way you could improve it is by using two rows of 2.56 mm pins, like...
    54 replies | 3257 view(s)
  • chileflora's Avatar
    02-07-2020, 10:50 AM
    This is exactly one of the problems I thought there will be with this type of connector for my applications - I ddi succesfully developped boards which had Atmel boards soldered on them as a unit, notably Nano, and...
    54 replies | 3257 view(s)
  • chileflora's Avatar
    02-07-2020, 01:45 AM
    Well, I can not understand well what this connector is. Is it for ribbon cable? Now, if you have the main board with 0.4 pitch, then on the expansion boards you also would expect to have the same pitch, but that is...
    54 replies | 3257 view(s)
  • chileflora's Avatar
    02-06-2020, 09:53 PM
    I took a look at Portenta and I liked it, but what I am extremely worried is the reliability of the small connectors... how robust are they? They advertize it for industrial environment, but how safe are these...
    54 replies | 3257 view(s)
  • chileflora's Avatar
    02-05-2020, 08:41 PM
    Well, thanks a lot for a very detailed answer... I am doing it mainly for my personal hobby use (I love designing things...). I certainly do not have the expertise to embed a high-frequency microproceessor in a...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 07:21 PM
    Strange, in their manual there is also the LQFP Pinout...(https://www.pjrc.com/teensy/K64P144M120SF5.pdf)
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 07:19 PM
    Also, the processor of Teensy 3.5 has PTA19 and PTA18 pins which connect to the crystal in the extreme corner... So that means they would be first to go...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 06:56 PM
    One of the major problems with T3.2 versus 2560 is the reduced number of pins and the lack of UARTs. In fact, for my design I need more than 60 pins, of which 20 are ADC, 18 are PWM, 14 are RX/TX pins, 4 I2C pins, and a...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 02:47 PM
    I think I got a partial answer here: https://nepp.nasa.gov/DocUploads/99810235-C28A-4A8D-BD52223A33EF7CDF/ASME-Hawaii993-lockeed.pdf Especially the graph: There is also another extrapolation graph, and the...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 01:00 PM
    A system failure is UNAVOIDABLE by definition, from the simplest pen to the space shuttle. It is all about probabilities and mitigating the effects of that failure. I can give you a very cruel recomendation: if you...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 12:47 PM
    That graph was very enlightening. If I understand it correctly, the main issue is then the uneven expansion between the chip and the board and not so much the contraction of solder joints from cold. So... if I...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 12:16 AM
    So from your experience, using BGA is not really a total No-no? There are not many alternatives if you want to have more advanced functionalities; it is surprising because I had quite good experience with raspberry pi,...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-05-2020, 12:09 AM
    From the discussion it seems that Teensy is not good for core AP; I am now thinking of using the 2560 for basic functionality and probably use Teensy for I/O (Uarts) and ADC. Before I used 2560 and RPi as companion,...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-04-2020, 11:54 PM
    Insulation does not work well unless it is complete. The AP board has dozens of cables, so one can not really insulate the whole AP board, but one could try insulate Teensy board and even heat it up (a couple of...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-04-2020, 11:39 PM
    Thanks a lot for the answer... It left me quite disappointed. I had pretty good experience with the slow Atmega 2560 - the main problem is the low number of uarts. Teensy seemed to solve this issue, and running...
    32 replies | 722 view(s)
  • chileflora's Avatar
    02-04-2020, 04:40 AM
    I was aware that most components are rated to -40 C I am most worried about this part... The mechanical solder failure... As far as how safe is safe... The guaranteed damage due to failure would be around 6.000...
    32 replies | 722 view(s)
No More Results
About chileflora

Basic Information

Statistics


Total Posts
Total Posts
19
Posts Per Day
0.31
Last Post
Teensy 4.0 vs PORTENTA H7 02-07-2020 11:32 PM
General Information
Last Activity
02-07-2020 11:37 PM
Join Date
02-02-2020