Cactus Micro Rev2

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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