Specification

Description Value
Microcontroller Atmel ATSAMD21
Supply Voltage 3.3V
Digital I/O Pins 15
Analog I/O Pins 6 x 12 Bit ADC, 1 x 10 Bit DAC
max. DC Current per I/O pins 7mA
Flash Memory 128 kB
SRAM 16 kB
Microcontroller clock speed 48 MHz
WIFI-Module ESP8266EX
Wireless standard 802.11 b/g/n
Modes P2P, soft-AP
Network features TCP-IP / UDP communication, Static IP, DHCP
Interface 27 I/O Pin stackable header
Dimensions 18,6 x 26,6 mm

Power consumption

Part Mode Power consumption
Microcontroller (SAMD21) on 1 - 5 mA
Microcontroller (SAMD21) standby 3 mA
WIFI-Chip (ESP8266) send 150 mA
WIFI-Chip (ESP8266) receive 50 mA
WIFI-Chip (ESP8266) sleep 1 - 15 mA
WIFI-Chip (ESP8266) deep sleep 0.01 mA
WIFI-Chip (ESP8266) off 0.0005 mA

Shematic (simplified)

schematic