| Processor: |
ESP32 processor with dual-core Xtensa LX6, Flash 4/16 MB, 0 MB PSRAM |
| CPU Frequencies |
240/160/80 MHz (for WiFi), 40/20/10 MHz (no WiFi) |
| Pins available on Breadboard |
2, 12, 13, 15, 17, 21, 22, 25, 26, 27, 32, 33, 36 (I), 37 (I), 38 (I), 39 (I) (total 16), 3.3V 2, 5V, GND 5 |
| Pins available on solder pads |
NO |
| Pins available internally |
0 (BOOT button), 14 (second button) and display (see below) |
| Pins for ST7789 |
BL:4, display pins see below, 80 MHz |
| Pins safe to use |
??? |
| Display |
YES, ST7789 1.14-inches display, SPI interface, 135x240 pixels, no touch controller |
| Interfaces |
?? 2x I2C, 2x SPI, 2x UART, 12x GPI0 (PWM), 11x ADC |
| Onboard Power LED |
YES (battery load control) blue |
| Onboard GPIO LED |
NO |
| USB-Connection |
USB-C, CH9102 |
| Wi-Fi connector |
PCB antenna |
| Wi-Fi |
YES, 802.11 b/g/n (2.4 GHz), STA/AP/Mixed |
| Bluetooth Classic |
YES, 5.0 |
| Bluetooth Low Energy (BLE) |
YES, Bluetooth 5.0 LE protocols |
| Battery connector |
YES JST 1.25 2P |
| Battery loading |
YES |
| Battery voltage measure |
YES GPIO 4 |
| Battery voltage measure control |
NO |
| Extern voltage control |
NO |
| Restart button |
YES |
| BOOT button |
YES, GPIO 0 |
| Second button |
YES, GPIO 35 |
| On-/Off Switch |
NO |
| SD card reader |
NO |
| Breadboard pins |
2 * 12 pins |
| QWIIC connector |
NO |
| Internal temperature sensor |
YES |
| Low Dropout Voltage Regulator (LDO) |
AP2112K-3.3V( RT9013) (500 mA) |
| Breadboard pins distance (width) |
2,3 cm (1 pin on each side available on a breadboard) |
| Security features |
Encryption hardware accelerators that support AES-128/256, hashing, RSA, HMAC, digital signatures, and secure startup |
| Expansion board |
NO |
| Arduino board selection |
ESP32 Dev Module |
