VCSEL

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About VCSEL

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  1. Hi: Thanks for the reply. Your comment about the underline helped. The pin numbers on my board are close to the socket and I had completely missed them, but your comment made it all clear. My circuit is working as designed. Thanks for the help!
  2. Hello Pooyan: If you are measuring a DC voltage can you check with a meter to verify the voltage is still present? Also check if channel 2 is AC or DC coupled or set to GND. If you are using a trigger, check it is triggering on channel 2. If you are using a trigger on channel 2, check if the trigger voltage is within the voltage range of channel 2. VCSEL
  3. Hello: I am trying to better understand the functionality of the Chipkit Max32 board with respect to the analogWrite command. I have been testing pins A4, A5, 21, 23, 44 and 45 using the anlogWrite function. I am testing each pin separately, i.e. one at a time. I have the pin connected to ground through a 180Ohm resistor and monitoring the voltage across the resistor using an oscilloscope. I am using the following code changing the pin number in the analogWrite for each pin: void setup() { Serial.begin(9600); } void loop() { for (int i=0;i<256;i++){ analogWrite(4,i); delay(5000); Serial.print(i); Serial.println(""); } } I am using the delay(5000) command to give me enough time to monitor and measure the oscilloscope value and the Serial.print function to know where I am in the code execution. When I test the A4 and A5 pins, I measure 0V, regardless of the value written with the analogWrite. When I test the 21, 23, 44 and 45 pins the voltage is 0 until a value of 127 is reached. above 127 the voltage is 3.3V., constant. Do I need to initialize any other values for the analogWrite to function properly? Thank You
  4. Thank you for the replies. The documentation is what I needed.
  5. Hello: Where can I find information which describes the functions and capabilities of the pins on the board? I have the documents from the website, but do not understand the terminology such as AERXERR/RG15 or ECRX/SDA2/SDI2A/U2ARX/PMA4/CN9/RG7. I understand each term, ECRX, RG15 are specific functions, but where can I "decipher" these functions? Thank You