Embedded Programming
MCU board
I really like to use SEEED XIAO ESP32-C3 and ESP32S3.
Here is the official wiki for SEEED XIAO ESP32-C3: XIAO_ESP32-C3
Here is the official wiki for SEEED XIAO ESP32-S3: XIAO_ESP32-S3
ESP32-C3 is much cheaper than ESP32-S3. Here is a comparison:
Development Software
I will use Arduino IDE.
Here is the official website of Arduino IDE: Arduino IDE
Starting with Arduino
To start with Arduino, there is another simple hardware could be used, Grove Beginner Kit.
Here is the official website of Grove Beginner Kit: Grove Beginner Kit
ESP32-C3
There were different versions of ESP32-C3, I used SEEED XIAO ESP32-C3 in my project.
RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz.
On-chip Memory 400KB SRAM & 4MB Flash
1x UART, 1x IIC, 1x SPI, 11x GPIO(PWM), 4x ADC, 1x Reset button, 1x Boot button
Size: 21 x 17.8mm (It's really tiny, I like it)
RFID Modules
I planned to use RFID modules in my final project, and I found three of them.
RC522, PN532 and RC522 mini.
As I always prefer the smaller one, I chose RC522 mini.
I tried to connect it to the ESP32C3 and connected XIAO to my laptop.
I tried to use RC522 mini to read a RFID card.
I used an example code. What I need to do is to change the SS_PIN and RST_PIN to the ones I used.
The important thing we need to notice is we need to use the GPIO number for the SS_PIN and RST_PIN.
