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  1. Im just making sure i get the flex io right. I...

    Im just making sure i get the flex io right.

    I needed another spi bus on a project, all dedicated buses are already in use, so i looked into flexIO and i have some pins on the MicroMod teensy...
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    I have marked the pins with a green dot to make...

    I have marked the pins with a green dot to make it easier to see.

    25205
    As i need both spi and sd card on this carrier, are those pins also changeable with a define?

    Im gonna design my next...
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    no audio. just lots of control signals (cv, midi,...

    no audio. just lots of control signals (cv, midi, osc)
    ill see if i can get you the gerbers later, its quite specific pcb with some expensive parts...
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    add ethernet to a micromod format teensy

    i have decided to switch the t4.1 in project to a micromod teensy.
    But i need ethernet for the project, to send and recive osc, and maybe artnet, i guess my only requirement is "no audible latency"...
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    This might be impossible with the NDA and all,...

    This might be impossible with the NDA and all, but after seing MIPI CSI/DSI support on the 1170, this would be the one feature i wish was on the next Teensy!

    Those crisp phone displays that are...
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    what screen are you using, looks very good

    what screen are you using, looks very good
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    Does anyone know whats the part number for the...

    Does anyone know whats the part number for the crystals on the t4/t4.1

    I have Google what I could read on top of the package but can't find anything
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    Im quite interested! But Im quite new to all of...

    Im quite interested! But Im quite new to all of this. But I have started creating my own schematic from pauls schematics. And also borowing some stuff from the micromod t4 by sparkfun

    My main...
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    Hey, just wanted to double check before i begin...

    Hey, just wanted to double check before i begin my first bga adventure

    This is one of the compatible processor chips right?...
  10. Thread: Teensy MicroMod

    by mah
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    oh yeah, sry. i mean the IMXRT1170 teensy. dont...

    oh yeah, sry. i mean the IMXRT1170 teensy. dont know why i just assumed that the IMXRT1170 teensy would be called teensy 5...
    hmmm seems like a shame to not get ethernet on the micromods, but then...
  11. Thread: Teensy MicroMod

    by mah
    Replies
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    10,285

    A micromod Teensy 4 seems really interesting, im...

    A micromod Teensy 4 seems really interesting, im guessing it wont come with a ethernet PHY, would it be as simple to add a DP83825I to the carrier board and then just use the native Ethernet lib?...
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    just got it working, but just for fun i made it...

    just got it working, but just for fun i made it output sqaurewaves (on all 8 channels) and i measured them at 2.7kHz using delaymicroseconds(1)

    probably much faster if you know how to code ;),...
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    haha never mind, we forgot to turn on the interna...

    haha never mind, we forgot to turn on the interna ref, and enebling the dac etc.

    Working fine now!
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    DAC81408 cant get any output

    Hey, my and my friend is trying to get the TI DAC81408 to work on our custom board, we think we got the code right, but cant seem to get any output from the dac.
    we are both kinda new trying to...
  15. Thx. That's all I needed to hear. I'm gonna stick...

    Thx. That's all I needed to hear. I'm gonna stick with teensy :)
  16. Teensy 4.1 and DSP performance, and possible alternatives

    Hi, im trying to get my head around dsp and micro-controllers, from the all the documentation of the i.MX RT1060 i cant find anything about dsp features, but the stm32h7 talk about great dsp...
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    Yeah, probably not, wondering how hard it would...

    Yeah, probably not, wondering how hard it would be to port an existing lcd lib to a display like this
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    Thanks, how did i miss that? i think i mixed...

    Thanks, how did i miss that?

    i think i mixed it up with this https://www.lcds-center.com/parameter_Eurotech_ET033FW01-O(OLED_3.3-inch_480x800).html
    very similar.

    anyways, cant find any...
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    Oled display, "TL2796"

    Hey, i have been looking at these 3-3.7 inch oleds and im wondering if anyone now how to use them with a teensy
    The driver ic seems to be TL2796, but im uncertain. i have asked for datasheets on...
  20. Thanks for your quick reply, ill guess ill have...

    Thanks for your quick reply, ill guess ill have to hunt down a screen with the ili9488 controller then :)
    But it looks very promising, i just hope i'm interpreting this right:
    23527
  21. ST7796s TFT Send 3bit data when 16bits is expected over spi

    I was wondering i anyone knew if there's a way to send less bits to the display to increase spi transfer speeds.

    the ST7796s has an idle mode the supports 8 colors, but the controller seems to...
  22. just changed the 10k to 110R and now its working,...

    just changed the 10k to 110R and now its working, gonna change my new boards to 5v but for now 3.3 works

    regarding software controlled trs control, it would be awesome, i read in the stackechange...
  23. Just wanted to know if it was safe to try this,...

    Just wanted to know if it was safe to try this, changing the power to 5volts? And change r114 from 10k to 110R? Don't wanna fry (another) teensy :)
  24. Just tried to change the 10k resistor to a 4.7k...

    Just tried to change the 10k resistor to a 4.7k one, keeping the power cuircuit at 3.3v and it does not seem to work

    like this: 23268
  25. OK, but then i could probably use my original...

    OK, but then i could probably use my original schematic, but changing it like this?
    23267
    or should i keep 3.3v on the power protection?

    The reason i sleected the MC74VHC1GT04 was because i...
  26. 23247 like this maybe?

    23247 like this maybe?
  27. maybe a 74AHCT240 will do the trick, or...

    maybe a 74AHCT240 will do the trick, or MC74VHC1GT04?
  28. Ye, ok thx. midi stuff don't recognize any input,...

    Ye, ok thx. midi stuff don't recognize any input, so i guess this circuit don't work with 3.3v
  29. That sounds good, are there any 74hct that can...

    That sounds good, are there any 74hct that can buffer, level shift and invert the signal?
  30. I tested the "plug in and out issue" with another...

    I tested the "plug in and out issue" with another device(elektron machinedrum), and it does not seem to care have many times i plug the cable in and out , so i blaming the device(squarp pyramid)
  31. midi in with 3.5mm connector overvoltage protection cuircuit

    Hi, i found a nice schematic for a over-voltage protection circuit when using 3.5mm connectors for midi, as users might plug cv and gate(+-12v) in accidentally

    The schematic/discussion can be...
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    that did it, thanks! :D

    that did it, thanks! :D
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    btw, by changing pin i mean changing pin no. in...

    btw, by changing pin i mean changing pin no. in the constructor, not changing any physical connection as im using a pcb i made
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    yeah, but pin 10 is used for another spi device,...

    yeah, but pin 10 is used for another spi device, so a bit of a problem there, could this be some kind of software bugg? i tried using the adc (that uses cs 10) and the mcp at the same time and had no...
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    well im happy that it works, but a bit anoyed i...

    well im happy that it works, but a bit anoyed i have the change CS pins on every new power up :) and thanks for trying to help!
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    im not using the adc when testing the mcp, im...

    im not using the adc when testing the mcp, im using your example in first post as i said, and no added code. The adc and a couple of other things are attached to the same spi bus. but i dont try to...
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    wtf, sucess! i changes CS to 36, then back to 37...

    wtf, sucess! i changes CS to 36, then back to 37 and it started working! if i cut power i need change to 36 then back to 37 again to make it work.
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    i dont know what to test anymore. very confused,...

    i dont know what to test anymore. very confused, i have continuity on the miso line, between teensy and the mcp, i have an adc sends data on the same spi bus just fine. there seem to be data sent and...
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    very strange. using this lib i can write:...

    very strange.

    using this lib i can write: https://github.com/sumotoy/gpio_MCP23S17/blob/master/gpio_MCP23S17.h

    no sucess at reading though

    code:

    #include <SPI.h>
    #include...
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    mosi: 11 miso: 12 clk: 13

    mosi: 11
    miso: 12
    clk: 13
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    Yes, i tried, just get "no mpc detected" could it...

    Yes, i tried, just get "no mpc detected" could it be that i i got some other lib named "mcp23s17.h" installed that interferes? if i get the no mpc ouput in the serial monitor i guess least the...
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    Hi, im having trouble using this lib with my...

    Hi, im having trouble using this lib with my teensy 4, i have used another lib to successfully setting the outputs of the mcp from low to high and back. but this library just says no mcp detected....
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    mcp23s17 and sumotoy gpio_MCP23S17

    Hi, i had sucess writing to the mcp, but i cant seem to read, i dont find a simple example on how to read. i messure 3.3v at the pin but my code reports 0 whatever i do. im quite certain its the code...
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    Pin compatible with t4.1 but extra outside rows...

    Pin compatible with t4.1 but extra outside rows seems ideal to me! maybe change sdcard to pins instead of the slot.
  45. Bel Magnetic SI-46001-F as ethernet connector for teensy 4.1

    Hi, designing my first pcb, for teensy 4.1, i want a vertical Ethernet connector, i have made the design using the "Bel Magnetic SI-46001-F", as its one of the few vertical i found.

    Could anyone...
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    Spi devices with different clock speeds

    Hi, im wondering how to handle spi when chips have diffrent max clock speeds.

    should i change clock speed between communicating with different chips?
    Or should i use two buses with diffrent...
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    "Since this chip is a special bi-directional...

    "Since this chip is a special bi-directional level shifter it does not have strong output pins that can drive LEDs or long cables, it's meant to sit on a breadboard between two logic..." I guess a...
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    Yeah, I know Paul suggested that the some of...

    Yeah, I know Paul suggested that the some of those was not a good option for some applications, but don't remember the specifics right now. Maybe it will be fine
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    True bidirectional logic level shifter

    Hi, I'm want to send and receive eurorack/synth gates with a teensy 4.1, the gates should be 5v but as the teensy is 3.3 v so I need to shift both up and down, and I also want to use software to...
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    wow thx! cleared up quite a lot of things! ...

    wow thx! cleared up quite a lot of things!

    Just to be clear, this should theoretically be the most efficient method of connecting SPI devices?
    ---------------------
    SPI0:
    MISO0
    MOSI0
    SCK0...
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