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Thank you, I don't know what that means and I don't know how to get this Arduino code to work with teensy. Can you explain what I should do to fix the code?

I get this error when I try to run this code, but I don't know how to solve it. Thank you.

cannot convert 'PORTDemulation*' to 'volatile uint8_t* {aka volatile unsigned char*}' in initialization
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Srlx2 uses one wire, the example code that I posted uses a diode to combine the tx/rx lines of the Arduino. Are you saying that the one wire library is unable to communicate with the receiver using...

I have a Spektrum SRXL2 Serial Receiver that I want to connect to a Teensy 4. I have an example for arduino that I want to convert to one-wire communication. How do I take this Serial communication...

Maybe you misunderstood my question, I asked What would be your recommendation on connecting the teensy to solderless breadboard? The teensy has no headers to attach it to a breadboard. I assume you...

I tried using SDA1/SCL1 using the i2c scanner and that also did not detect any devices.

What would be your recommendation on connecting the teensy to solderless breadboard? I2C was working...

I updated the software and now the teensy is communicating via serial that it cannot find the i2c device. I replaced the broken teensy 4 (i2c worked) with the new teensy 4 and now i2c is not working....

Thank you for the information, I decided not to use those chips and instead I used a MC14504B for 5v -> 3v and txs0104E for 3v->5v. However I have to figure out why most of the outputs of the...

Thank you for all of the help, I realized what happened. I didn't think that the PWM input wire from my electronic speed controller would send 5 volts as it is PWM input. So pin 23 is fried and I...

Yes, I removed that wire and tried to reset the board. The only wire that I have connected still is the I2C connections (green and blue wire). I will desolder it from the board this weekend.
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I took pictures of the top and bottom of the circuit https://imgur.com/a/vePtQUx

I disconnected everything but the I2C connections and I soldered VIN to VUSB. Still nothing but a single red blink....

I have nothing on pin 22 but a pwm out to headers for servo motor on pin 23. I checked the board and did not find any stray conductive materials.

Are you saying that this board is probably dead?...

Yes, one red blink and then nothing. I will take pictures and desolder the 5V later today.

I have just tried your suggestions and the teensy will only flash red once. I can not get it to boot into blink. When I plugged the USB I cannot enter programming mode.

I checked that the trace...

To clarify, plugging in the teensy should be followed by powering on the teensy? I have a separate power supply so I want to make sure that i have your instructions correct.

After I release the...

I have a teensy 4.0 that I started uploading example codes to. I was having issues receiving serial communication so I kept trying different example codes. Then I noticed that it did not show as a...