The voltage of the RXD and TXD depends on the VCC pin, right?
Morning guys; I bought an HW-624 to connect to the console of my SBC and ESP. However, the "documentation" is anything but clear ... it's actually quite confusing.
Here are my questions:
-The voltage of the RXD and TXD depends on the VCC pin, right? If I put 3.3v on it, they will be at 3.3v and not 5v from the USB port, correct?
-The RXD of the board goes to the RXD of the controller and the TXD to the TXD, right? Because the documentation on Aliexpress seems to say otherwise.
Thank you.
Here are my questions:
-The voltage of the RXD and TXD depends on the VCC pin, right? If I put 3.3v on it, they will be at 3.3v and not 5v from the USB port, correct?
-The RXD of the board goes to the RXD of the controller and the TXD to the TXD, right? Because the documentation on Aliexpress seems to say otherwise.
Thank you.
Solution
sometimes the voltage of the RXD and TXD is not dependent on the VCC power supply, you ought to confirm from the manufacturers datasheet. Sometimes VCC might be 3.3V and the RXD/TXD pins will be 1.8V i have seen this before. So always confirm this from the device documentation before you start work, least you blow up stuffs.
