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  • frohr's Avatar
    03-20-2023, 12:24 PM
    Hi, I have Teensy 4.0 with ADS1256 and USB filter to remove noise. I want put it on one board. Important for me is send data to PC via USB. Now I have connected cutted usb cable from teensy, connected to USB filter 5V,...
    0 replies | 82 view(s)
  • frohr's Avatar
    03-01-2023, 08:46 AM
    Thank you Joe. I was thinking that differential reading will help lower noise. But seems it is the same as AIN0 and AINCOM. There is huge noise from USB to ADXL/ADS1256. I have some usb filter and it helps but it means...
    10 replies | 282 view(s)
  • frohr's Avatar
    02-23-2023, 07:21 PM
    It is just for me. I am sending data via usb to Python. if (Serial.available() > 0) { inChar = Serial.read(); if (inChar == 'r') { // if received char r, send buffer...
    5 replies | 155 view(s)
  • frohr's Avatar
    02-23-2023, 06:26 PM
    But I am not sure where is difference. There are 4 wires 5V, GND, D+, D-. If I connect it from micro USB to USB A or USB B, it must work, or am I wrong? For me is better use "more starndard" USB, like cables for...
    5 replies | 155 view(s)
  • frohr's Avatar
    02-23-2023, 05:16 PM
    Hi, I have Teensy 4.0, it is project for measurement. I will print box on 3d printer. But micro sub to too weak for me. I need USB A female as connection to computer. I need do it as small as possible. Use this...
    5 replies | 155 view(s)
  • frohr's Avatar
    02-23-2023, 03:38 PM
    just for information, this is my scheme, wiring Teensy 4.0 and ads1256. Adxl is connected to JP3 and 3V3.
    10 replies | 282 view(s)
  • frohr's Avatar
    02-23-2023, 03:05 PM
    great, thank you so much for help. The code from last time works very well, only noise make difficulties. Let's see if differential reading will lower the noise.
    10 replies | 282 view(s)
  • frohr's Avatar
    02-23-2023, 02:50 PM
    Yes, I have testing rig for vibrations - adxl is mounted on it. If is connected Vou to AIN0 and gnd to AINCOM, its OK (not differential with noise). But When I connect Vou to AIN0 and gnd to AIN1, I can see just sine...
    10 replies | 282 view(s)
  • frohr's Avatar
    02-23-2023, 11:34 AM
    I tried today connect adxl VDD to 3.3V, Vou to AIN0 and gnd to AIN1. I changed code as above but I see just sine wave 50Hz. I am thinking if is it right wiring.? Is ADXL1005 eval board suitable for differential reading?
    10 replies | 282 view(s)
  • frohr's Avatar
    02-22-2023, 05:35 AM
    Now ADXL is connected Vout to AIN0 and gnd to INCOM. For differential reading I will have connected gnd and Vout to AIN0 a AIN1. Or am I wrong and this line is not necessarry for differential reading?
    10 replies | 282 view(s)
  • frohr's Avatar
    02-21-2023, 04:49 PM
    Hi, I have Teensy 4.0 and ADS1256 module. I read data from ADXL and send via USB to PC. But I have problem with lot of noise from USB. If I use USB isolator, it is OK. But I am thinking about otehr possibility -...
    10 replies | 282 view(s)
  • frohr's Avatar
    02-20-2023, 08:30 PM
    Hi all, Is teensy 4.0 suitable to collect data from accelerometer (adxl1005) with 60k or 30k sample rate, 12bit resolution? Very important is precise timing. Thank you for any advice.
    2 replies | 184 view(s)
  • frohr's Avatar
    01-29-2023, 07:44 PM
    Is possible use D+ D- GND and 5v to send data? If yes, I can make special USB cable and use something like military connectors.
    13 replies | 472 view(s)
  • frohr's Avatar
    01-29-2023, 06:28 PM
    How to connect it to teensy? Thank you
    13 replies | 472 view(s)
  • frohr's Avatar
    01-29-2023, 06:03 PM
    Pins looks connected ok. "high speed serial connection with an industrial dust/water-proof 3-pin connector" What is it? I do not know this connection. Also I have to solve problems like lot of noise from USB...
    13 replies | 472 view(s)
  • frohr's Avatar
    01-29-2023, 05:06 PM
    Yes, connector is all inserted (tried without box). Seems loose a lot. Tried many cables. I can move the connector left/right very easily and Teensy is connecting / disconnecting. Is there any way how to correct it? ...
    13 replies | 472 view(s)
  • frohr's Avatar
    01-29-2023, 02:29 PM
    Hi, I have Teensy 4.0 and project where I send data via USB cable to PC. But quite offten I hav problem, if I touch the cable or Teensy in plastic box, then Teensy is starting connecting and disconnecting and I have to...
    13 replies | 472 view(s)
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