MXCHIP EMW3162 is a $10 Low Power Wi-Fi Module for IoT Applications

You can’t beat ESP8266 Wi-Fi modules on price to add Wi-Fi to your IoT projects, but Hackaday found a new Wi-Fi module by Shanghai MXCHIP Information Technology that sells for $10 on Seeed Studio or Amazon US, that should be better suited to battery operated project thanks to a lower power consumption. EMW3162 also features a more powerful STM32F205 cortex M3 micro-controller, as well as more I/Os than ESP8266.

EMW3162Specifications for EMW3162 Wi-Fi module:

  • MCU – STM32F2 Cortex M3 MCU @ 120 MHz with 128KB RAM, 1MB flashOn
  • Wi-Fi connectivity
    • 802.11b, 802.11g, 802.11n (single stream) on channel 1-14 @ 2.4GHz
    • WEP, WPA/WPA2 PSK/Enterprise (hardware encryption)
    • Transmit power: 18.5dBm@11b; 15.5dBm@11g; 14.5dBm@11n
    • MIN Receiver Sensitivity: -96 dBm
    • Max Data rate: 11Mbps@11b; 54Mbps@11g; 72Mbps@11n HT20
    • Wi-Fi modes: Station, Soft AP and Wi-Fi direct
    • Advanced 1×1 802.11n features: Full/Half Guard Interval, Frame Aggregation, Space Time Block Coding (STBC), Low Density Parity Check (LDPC) Encoding
    • WPS 2.0, EasyLink
    • Multiple power save modes
    • On-board chip antenna, IPEX connector for external antenna
  • Peripherals accessible via 30x through holes and 14 solder pads:
    • 32x GPIOs
    • 2x UARTs with hardware flow control
    • 1 x I2C, 1x SPI/I2S
    • 8x ADC input channels, 2x DAC output channel
    • 1 x USB OTG
    • 2 x CAN
    • PWM/Timer input/output available on every GPIO pin
    • SWD debug interface
  • Misc – 2x user LEDs
  • Single operation voltage – 3.3V
  • Power consumption:
    • ~7mA while module is connected to access point and no data is transmitting,
    • ~24 mA while sending data under 20kbps
    • 8μA under standby mode.
  • Dimensions – 38.60 x 23.62 mm
  • Compliance – CE,  FCC
  • Operating Temperature – -40°C to 85°C
  • Moisture Sensitivity Level (MSL) – Level 3

You can get the full details in EMW3162 datasheets. The module can be programmed with Broadcom’s WICED firmware development kit (See github), or the company’s MICO (Mico-controller based Internet Connectivity Operation System) that relies on IAR Workbench.

EMB-380-S2 Baseboard for EMW3135 Module
EMB-380-S2 Baseboard for EMW3162 Module

Since the module is said to require a single 3.3V power input it should not be too difficult to power it by yourself, but if you want an easier platform for evaluation, EMB-380-S2 development board is sold on Seeed Studio for $21 without the module. Both can also be found on Aliexpress but prices are quire higher, at least for now.

Visit MXCHIP EMW3162 product page for a few more details about their embedded Wi-Fi module.

Thanks to Freire for the tip.

Share this:

Support CNX Software! Donate via cryptocurrencies, become a Patron on Patreon, or purchase goods on Amazon or Aliexpress

ROCK 5 ITX RK3588 mini-ITX motherboard
Notify of
The comment form collects your name, email and content to allow us keep track of the comments placed on the website. Please read and accept our website Terms and Privacy Policy to post a comment.
1 Comment
Khadas VIM4 SBC