Search found 5 matches
- Sun Jan 31, 2021 7:36 am
- Forum: Hardware
- Topic: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
- Replies: 8
- Views: 4091
Re: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
The USB-to-serial chip was removed from board
- Tue Jan 26, 2021 9:05 am
- Forum: Hardware
- Topic: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
- Replies: 8
- Views: 4091
Re: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
On my PCB I don't use the USB to UART from schematic. I connect an USB to TTL adaptor like this:
TX - GPIO1
RX - GPIO3
RST - ESP_EN
GND - GND + GPIO0
TX - GPIO1
RX - GPIO3
RST - ESP_EN
GND - GND + GPIO0
- Mon Jan 25, 2021 8:23 am
- Forum: Hardware
- Topic: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
- Replies: 8
- Views: 4091
Re: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
I attached the schematic from where I started. I don't use USB to UART on board and I use another Power supply from 12V to 5V (MP1584) and a LDO from 5v to 3.3V. All the PCBs are the same and all the components was planted on the line.
- Sun Jan 24, 2021 6:42 am
- Forum: Hardware
- Topic: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
- Replies: 8
- Views: 4091
Re: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
All the connections, all the cables are the same but different behaviors.
- Sat Jan 23, 2021 8:25 pm
- Forum: Hardware
- Topic: same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
- Replies: 8
- Views: 4091
same PCB, but different behaviors at esp32-wroom-32 and wroom-32U
Hello, I developed a board that contains esp32, 12v to 5V and 3.3V source(MP1584EN), st232c and DS1307. The PCBs are identical but for those with wroom-32U when using external power, UART0 no longer works properly. Some strange signs and sometimes truncated debug messages appear in the debug window....