ESP32-DevKitC V4 schematics help
Posted: Mon Feb 10, 2020 4:06 pm
Hi,
My goal is to create a pcb of my own that inclueds an esp32, which I am able to upload a code into it externally(with an FTDI module or similiar,for example this one: https://amzn.to/2SgsEiA). For this I encountered a few issues looking at the sketch:
1. Connected to 3.3v on ESP-WROOM-32 are 2 capacitors: 0.1uF, 22uF. What are their parts? I also have a AMS1117-3.3 beside the esp that is connected at output to 22uF. Does this make the first 22uF redundant?
2. I can see in the schematic that RX,TX, EN and IO0 are coming from the UART conversion part, with using DTR and RTS. Is this absolutly neccessary for esp32? what is the part of IO0, and is EN ok being just high all the time?
3. In my FTDI module there are a CTS, DTR pins - how do I utilize them(do I need to?)?
Thanks in advance.
My goal is to create a pcb of my own that inclueds an esp32, which I am able to upload a code into it externally(with an FTDI module or similiar,for example this one: https://amzn.to/2SgsEiA). For this I encountered a few issues looking at the sketch:
1. Connected to 3.3v on ESP-WROOM-32 are 2 capacitors: 0.1uF, 22uF. What are their parts? I also have a AMS1117-3.3 beside the esp that is connected at output to 22uF. Does this make the first 22uF redundant?
2. I can see in the schematic that RX,TX, EN and IO0 are coming from the UART conversion part, with using DTR and RTS. Is this absolutly neccessary for esp32? what is the part of IO0, and is EN ok being just high all the time?
3. In my FTDI module there are a CTS, DTR pins - how do I utilize them(do I need to?)?
Thanks in advance.