This board was developed for applications and installations where space is premium and projects are made as permanent set ups. Small, available in 3.3 V and 5 V versions, powered by ATmega328.
Specification:
| Microcontroller | ATmega328 * |
| Board Power Supply | 3.35 -12 V (3.3V model) or 5 – 12 V (5V model) |
| Circuit Operating Voltage | 3.3V or 5V (depending on model) |
| Digital I/O Pins | 14 |
| PWM Pins | 6 |
| UART | 1 |
| SPI | 1 |
| I2C | 1 |
| Analog Input Pins | 6 |
| External Interrupts | 2 |
| DC Current per I/O Pin | 40 mA |
| Flash Memory | 32KB of which 2 KB used by bootloader * |
| SRAM | 2 KB * |
| EEPROM | 1 KB * |
| Clock Speed | 8 MHz (3.3V versions) or 16 MHz (5V versions) |
