# Description

Cactus Micro is our integrated developement board, we have mixed Arduino with WIFI into a single board. It is targeted for makers to develop low power Internet-Of-Things (IoT) projects quickly and easily.

The micro-controller unit (MCU) is Atmel ATmega32U4 and the WIFI chip is ESP8266.

The revision 2 keep the same size with rev1. But use hardware serial port Serial1 as default option. It also added some jumpers for connect esp8266 GPIO. For some case such as I2C.

# Features

  • Built-in ESP8266 WIFI module
  • ATmega32U4 running at 3.3V/8MHz
  • Supported under Arduino IDE v1.0.6
  • On-Board micro-USB connector for programming
  • 4 x 10-bit ADC pins
  • 12 x Digital I/Os (5 are PWM capable)
  • Rx and Tx Hardware Serial Connections

# Specification

Microcontroller

Atmel ATmega32U4

Wireless Chip

ESP8266 (ESP-03)

Operating Voltage

3.3V

Input Voltage

5V (USB)
4.3-6V (RAW)
Note: Use either one power source at a time, otherwise you will damage the board.

Clock Speed

8MHz

Connectivity

WIFI
micro-USB
Serial
I2C
SPI

Flash Memory

32KB (of which 4 KB used by bootloader)

SRAM

2.5k

EEPROM

1k

Dimensions

1.3 x 0.7"

I/O Pins

18

# Documents