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  1. Replies
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    ACS711 current sensor

    I want to use acs711,i have connected the gnd of the sensor with the agnd of the microcontroller to filter the "noise", i have connected still a 1nf capacitor between analog pin and ground.
    I...
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    Ok thanks frank.

    Ok thanks frank.
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    Hello,i have found decoupling capacitors 0.1uf...

    Hello,i have found decoupling capacitors 0.1uf 16v and 25v.
    Which one is best to put on,16V or 25V??
  4. Thread: Enable pin

    by thanos
    Replies
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    For example the TPS61291...

    For example the TPS61291 (page 7) in the block diagram there is no internal pull-down resistor.
    In this case we should to put external resistor,correctly??

    Generally when it exists internal...
  5. Thread: Enable pin

    by thanos
    Replies
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    Enable pin

    I use the charger chip MC34673,in accordance with internal block diagram the pin ΕΝ it is not floating but it's connected with one pull-down resistor.

    https://imgur.com/a/Cyb8Dgd

    When there is...
  6. Thread: GND vs AGND

    by thanos
    Replies
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    Hello,i use the current sensor acs711,it is about...

    Hello,i use the current sensor acs711,it is about for a hall-effect sensor.
    The pin gnd of the acs711 sensor i have a connection to the pin AGND of teensy 3.6 because the sensor output is analog....
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    You are right.....if i want to use external...

    You are right.....if i want to use external reference i have to remove the 470Ω resistor?
  8. Replies
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    Ok, thanks for the analytical explanation. ...

    Ok, thanks for the analytical explanation.



    Can you suggest me something?
  9. Replies
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    Hi,i want to use the aref pin in the teensy...

    Hi,i want to use the aref pin in the teensy 3.6.This pin will connect with the output of a ldo voltage regulator ~3.3v and i want to ask some things.

    1)We connect the output voltage ~3.3v directly...
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    Please any help.

    Please any help.
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    Hello, in my project i want to use the sensors...

    Hello,
    in my project i want to use the sensors MPL3115A2,IIS2MDC and VL53L0X.According to the datasheet the sensor MPL3115A2 has a 4MHz maximum clock frequency in the i2c communication, the IIS2MDC...
  12. Thread: ublox library

    by thanos
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    ublox library

    Hello,
    i use the library tinygps and i want to read from the message GPGSA the second information

    $GPGSA,A,3,19,28,14,18,27,22,31,39,,,,,1.7,1.0,1.3*35

    Mode: 1=Fix not available
    ...
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    Ok KurtE understood,thanks.

    Ok KurtE understood,thanks.
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    In my project i want to use two spi channels,...

    In my project i want to use two spi channels, SPI1 and SP2 at 10Mhz.
    They can work at the same time or i'll have to stop each channel sequentially??
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    I changed the pin 63-->PTE5 to 63-->PTC16 without...

    I changed the pin 63-->PTE5 to 63-->PTC16 without defining a new pin,but the pin PTC16 not activated.
    Can not "see" the pin PTC16.
  16. Replies
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    The example sketch Blink mux setting is not...

    The example sketch Blink mux setting is not needed because the pin13=ptc5 is registered, the same i do pin64=ptc16.Why do i have to adjust the mux settings since i have set the new pin.



    int...
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    I tried and with digitalWriteFast but the pin...

    I tried and with digitalWriteFast but the pin ptc16 is not enabled,i measure with the multimeter 0.5v.
    Paul first of all, the changes i have made are sufficient or i have to do something and in...
  18. Replies
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    I have set the new pin in core_pins.h and...

    I have set the new pin in core_pins.h and pins_tensy.c, no longer needed the mux setting.




    #define CORE_PIN64_BIT 16

    #define CORE_PIN64_BITMASK (1<<(CORE_PIN64_BIT))

    #define...
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    Can someone tell me what is wrong? Why does not...

    Can someone tell me what is wrong?
    Why does not work the new pin?
  20. Thread: Read signals

    by thanos
    Replies
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    The pcb board is already ready and i can not make...

    The pcb board is already ready and i can not make any changes to the pins.
    The addition of new pins it can not be done?
  21. Thread: Read signals

    by thanos
    Replies
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    Paul i will not disagree with what you said,but...

    Paul i will not disagree with what you said,but it is the only solution.:(
    On my board i have some pins which are not registered,you can help to register them??
    On my thread "Teensy 3.6 diy board"...
  22. Thread: Read signals

    by thanos
    Replies
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    I tried to activate a led with a button with this...

    I tried to activate a led with a button with this code and works properly.



    void setup() {

    PORTC_PCR5 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
    PORTB_PCR2 = PORT_PCR_PE |...
  23. Thread: Read signals

    by thanos
    Replies
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    762

    You are right,i just want to know what is wrong.:)

    You are right,i just want to know what is wrong.:)
  24. Thread: Read signals

    by thanos
    Replies
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    762

    Read signals

    I want to read the signals from a transmitter,so i wrote the following code and read channel 1 correctly:



    volatile byte stick_channel_1;
    volatile int transmitter_channel_1;
    volatile unsigned...
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    Any help please?

    Any help please?
  26. Replies
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    In my question here...

    In my question here (post 44) i have made some mistakes, i will continue on this theme.
    I added additionally the pin PTC16 as pin 64 in the archives "core_pins.h" and "pins_tensy.c" with the...
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    Hello again, I added additionally the pins...

    Hello again,
    I added additionally the pins PTA24, PTA25, PTA27 and PTC16 in the archives "core_pins.h" and "pins_tensy.c".

    1) core_pins.h


    i changed

    #define CORE_NUM_TOTAL_PINS 64 --->...
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    I'm at the 37 meter altitude,i measured with the...

    I'm at the 37 meter altitude,i measured with the bmp180 and gives me the correct pressure.
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    lps22hb pressure sensor

    Hello,
    these days i tested the pressure sensor lps22hb,the pressure measured is 43 hpa lower than it should,that is it show 970 hpa while it should show 1013 hpa.
    I read in st community that and...
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    Maybe paul,thank you all for your help.:)

    Maybe paul,thank you all for your help.:)
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    I just wanted to know why it does not work,we...

    I just wanted to know why it does not work,we ended up having to do with the time lags,i will experiment and tell you the results.:D
    About the pin PTC16 i need to add something else in these...
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    Νo i can't read the gyroscope.I changed the delay...

    Νo i can't read the gyroscope.I changed the delay time many times without effect.
  33. Replies
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    I added the pin PTC16 in the archives...

    I added the pin PTC16 in the archives "core_pins.h" and "pins_tensy.c".

    1) core_pins.h


    i changed

    #define CORE_NUM_TOTAL_PINS 64 --->65

    #define CORE_NUM_DIGITAL 64 --->65
  34. Replies
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    This is the signal (https://imgur.com/a/sqL2Qkz)...

    This is the signal i get
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    It's the gyroscope l3gd20h...

    It's the gyroscope l3gd20h
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    Signals from logical analyzer 1) ...

    Signals from logical analyzer

    1)


    #include <SPI.h>

    #define CS 10

    byte lowByte, highByte;
  37. Replies
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    Sorry paul,i mean it does not work as i want it...

    Sorry paul,i mean it does not work as i want it to work.:D
    I tested the following code and i have set the pin 10(PTC4) as chip selsct using the "pinMode(CS, OUTPUT);", "digitalWrite(CS, LOW);" and...
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    kurte i tested your code but it still does not...

    kurte i tested your code but it still does not work.
  39. Replies
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    Yes paul and everything works properly. The...

    Yes paul and everything works properly.

    The PCB
  40. Replies
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    Manitou and paul in post #8 i have mentioned that...

    Manitou and paul in post #8 i have mentioned that i have run the program:


    void setup() {

    PORTC_PCR16 = PORT_PCR_MUX(1);

    GPIOC_PDDR |= (1 << 16); // SET...
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    Paul i just want to learn why she does not work,...

    Paul i just want to learn why she does not work,
    Αlso the pin PTC16 it is not registered how will i use it?
  42. Replies
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    All works properly paul,was a problem at...

    All works properly paul,was a problem at hardware.
    Thanks.
  43. Replies
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    Yes i tried to activate the DSE and SRE writing ...

    Yes i tried to activate the DSE and SRE writing



    PORTC_PCR16 = PORT_PCR_MUX(1) | PORT_PCR_SRE | PORT_PCR_DSE;




    I did not understand what you mean by that,you can explain to me?
  44. Replies
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    Before i do this change that you say i can do...

    Before i do this change that you say i can do something else to work properly the above code?
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    So as i have written the code why not works?Has...

    So as i have written the code why not works?Has not been set correctly the pin PTC16?
    If i run this code




    void setup() {

    PORTC_PCR16 = PORT_PCR_MUX(1);
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    Good morning, in my project use the interface...

    Good morning,
    in my project use the interface spi,i want to use a pin which does not exist in the original teensy 3.6,that pin is PTC16 and i want to use it as chip select(CS).
    I have written the...
  47. Replies
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    Hello, i finished my own 3.6 teensy pcb but i...

    Hello,
    i finished my own 3.6 teensy pcb but i have some problems.
    I first loaded the example blink and everything went good,to test that it works i connected a sensor via spi but it did not...
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    In the teensy connected a gyroscope and when i...

    In the teensy connected a gyroscope and when i finish measurements of sensor the microcontroller goes into a hibernation state.
    When going a hibernation state consumption has increased,if i delete...
  49. Replies
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    Hello, i want to use in my project the function...

    Hello,
    i want to use in my project the function hibernate to have very little consumption.
    I found this voltage regulator which has very low quiescent current but it's very low output current 85mA....
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    Generally when we want to use push buttons it is...

    Generally when we want to use push buttons it is good to use internal pullup resistors or to mount external pullup resistors??
    I'm asking why in my project i have activated the internal pullup...
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