Publication date: 2018-09-19 13:51
The Pro Micro is too finicky. At some point you will mess up a setting in the Arduino IDE. With many other boards that&rsquo s not a problem and can be easily fixed. Not so with the Pro Micro. The bootloader is configured to get out of the way quickly, and if you program the board incorrectly, you must perform magic tricks to get the board back to life.
USB is a serial bus. It uses 9 shielded wires: two for power (+5v & GND) and two for differential data signals (labelled as D+ and D- in pinout). NRZI (Non Return to Zero Invert) encoding scheme used to send data with a sync field to synchronise the host and receiver clocks. In USB data cable Data+ and Data- signals are transmitted on a twisted pair. No termination needed. Half-duplex differential signaling helps to combat the effects of electromagnetic noise on longer lines. Contrary to popular belief, D+ and D- operate together they are not separate simplex connections. USB provides for a maximum cable length of 5 meters for devices running at Hi Speed.
I bought this to act as a special purpose USB HID where it could type and move the mouse for me. The &lsquo double reset&rsquo in the bootloader let me easily recover a mistake made in the code by giving me an 8 second window for loading new code rather than seconds.
There was a customer that was able to resolve this by using the serialEventRun(). For more information, try looking through this forum that helped the customer resolve the issue => https:///?f=69& t=96565.
66.) If successful, you will have no error messages the Arduino IDE will tell you that it is &ldquo Done uploading.&rdquo
Sorry for the delay in the answer - but the larger compilation size is due to the bootloader for this board (it differs from the Uno).
I am having some trouble with uploading sketches to my Pro Micro 5V. I am able to see COM8 in my device manager and I see COM8 under Tools> Serial Port. But able to see but for some reason when I upload the Blink sketch I get the following error: Error Touching serial port &lsquo COM8&rsquo (http:///ZSAVFQb).
Now that I have it up and running, this has been a little champ. Initially, though, it took a bit to get there. First I had to figure out where to get the board package from and how to install it in the Arduino IDE. It&rsquo s really not that hard to do but without decent directions, I had to fumble my way through. Then, I &ldquo soft-bricked&rdquo the board by building and uploading with the 8V/8MHz fuse settings. Ooops! My bad! Fortunately, it wasn&rsquo t hard to find instructions on how to unbrick it. Apparently, this mistake is a common one. But with those &ldquo preliminaries&rdquo out of the way, it&rsquo s been working well. If you need an Arduino in a tight package, this product is worth your consideration.
According to what you&rsquo re saying, the code should be correct (as long as you aren&rsquo t putting the while loop in parenthesis). Did you double check to make sure you&rsquo ve selected &ldquo Leonardo&rdquo in the IDE?
I&rsquo m having some problems with the hardware serial on this board, maybe someone could help me out. I have an OLED screen (model below) receiving serial data from this board. Over SoftwareSerial it works, but transfer is very slow, and I was trying to just use 5,6 pins to save program space. However, when I switch the serial used in the code to &ldquo Serial&rdquo and switch the pins to 5,6, I get nothing from the screen. It works on the hardware serial of both a Duemilanove and a Due. From the serial monitor I can see that signals are being sent at the appropriate times that are reaching the USB connection, but the screen isn&rsquo t responding. This is the case on USB power as well as a a separate power supply. Any thoughts?