Hello. I use Wemos Lolin32 lite to communicate with nfc-reader, nfc-reader support usb and bluetooth serial ports.

I sent command to nfc-reader over usb and all work fine. Then I tried to send the same commands over bluetooth and get incorrect data (other command over bluetooth works fine).



#if ...

Hello. I user Arduino IDE. I have ESP32-S2-Saol-1RI with integration USB port. I try to connect USB device, rfid card reader, and send hex data to it.
I connect:

D+ --> GPIO 20
D- --> GPIO 19
VCC --> v5
GND --> GND

But can't found any information, how to send hex data to it? Can anyone help ...

Hello. I get esp-12k esp32-S2 https://docs.ai-thinker.com/_media/esp32/docs/esp-12k_%E8%A7%84%E6%A0%BC%E4%B9%A6_en.pdf

Connect
module Rx - Tx ftdi232
module Tx - Rx ftdi232
module VCC - 3.3 ftdi232
GND - GND

in Arduino IDE select borad Esp32S2 Dev Module - try to upload but get error:
A fatal ...

hello. i try to connect pn532 nfc module to esp32 TTGO-T-display over spi, like this:

https://images-na.ssl-images-amazon.com/images/I/61Kw%2BusL9XL._AC_SL1001_.jpg

I try to use code:


#include <Wire.h>
#include <SPI.h>
#include <Adafruit_PN532.h>

#define PN532_SCK (2)
#define PN532_MISO (15 ...

Hello! It's need to display some cyrillic-text (russian and ukraine) on this display. I try to use font with this charters from here:
https://github.com/board707/DMD_STM32/tree/master/gfx_fonts and use it:

#include "fonts/GlametrixLight12pt7b.h";

TFT_eSPI tft = TFT_eSPI();

char *utf8rus_P(const ...

Code: Select all

#define CAMERA_MODEL_AI_THINKER

Are you sure this line matches your hardware?

yes. but i try with another/without it -not work

Hello. I try create QR-reader with ESPino32CAM libs. I use code from example:

#include "ESPino32CAM.h"
#include "ESPino32CAM_QRCode.h"

#define CAMERA_MODEL_AI_THINKER

#include "camera_pins.h"

ESPino32CAM cam;
ESPino32QRCode qr;

#include <TFT_eSPI.h>
#include <SPI.h>
TFT_eSPI tft = TFT_eSPI ...