Am trying to troubleshoot why my computer isn't recognizing the CP2102N as COM Port. I have tried two different computers, one PC and one Mac, different cables, uninstalling and reinstalling the drivers. I've attached the board schematic below. Here is the link to the IC itself. Not sure what my other options to troubleshoot can be. I've ordered the generic Xbee to usb converter off of amazon to see if it works to either narrow down the issue to my hardware or computer.
The absolute max current for VDD is 100mA and I would not draw any more that 80mA.
For the LEDs connected to 3.3V you are already using 40mA maybe even more if VDD is at it's max and the Vf of the LED is at it's min.
So if the xbee module uses more that 40mA you have a big problem.
Attached a photo for the calculation of supply voltage being 3.3V and Forward Voltage being 3.2V with a max current being 20mA. 5 Ω was the minimum the next one up available for purchase was 6.8Ω
The LEDs in question with the 6.8Ω resistors aren't operational under a 'USB Powered State'
There are 3 possible power supply options through this board. 3.3V, 5V, or 5V USB through the CP2102 Vreg.
Only one power source is supplied at a time, in this case, I am trying to connect the CP2102 with a computer via USB. The only LED that would be operational would be D5. Unsoldered the LED and it still poses the same issue.
The schematic is fine, the XBEE uses a pin header to interface with the board. This is how the board can be connected and not connected.
Not much I can do without the correct information.
You already have one mistake on your schematics maybe there are more.
You are already drawing a lot of current from VDD, maybe somewhere else you are drawing more.
Since the Xbee module can draw up to 215mA your design will burn out the CP2102, maybe you already burned it out.
If you read the CP2102 data sheet you would already know tthis, so I have to wonder what you schematic is actually supposed to show.
Am trying to troubleshoot why my computer isn't recognizing the CP2102N as COM Port. I have tried two different computers, one PC and one Mac, different cables, uninstalling and reinstalling the drivers. I've attached the board schematic below. Here is the link to the IC itself. Not sure what my other options to troubleshoot can be. I've ordered the generic Xbee to usb converter off of amazon to see if it works to either narrow down the issue to my hardware or computer. The purpose of this board is to allow three different power sources to the XBEE; 3.3V, 5V, and 5V via USB. Both the 5V would go through the Vreg to bring it to 3.3V. Only time USB would be used it to configure the XBEE which interfaces via header pins. Only one power source would be supplied at a time.
Update: From a previous thread that had to be deleted, unsoldered the LED/resistors and the issue still persists. (R1/R2/R3/R4/R5/R6)
