LAN and WiFi adapter

The CM3-HOME-B board has an ethernet port that works exactly as the standard Raspberry Pi ethernet port. Optionally it is possible to mount a 2.4GHz WiFi module.

The WIFI-2 module used is an USB 2.0 module compliant with IEEE802.11 b/g/n. It is based on a RaLink RT5370N chip and fully supported by the Raspberry Pi Linux Kernel. It can be mounted directly on a PCB and can work in managed, ad-hoc and access point mode.

Two type of antenna are available:

  • PCB antenna (Code AN-WIFI-01)
  • Rubber antenna (Code AN-WIFI-02)

Buy the WiFi adapter More info about the WiFi adapter

Turn-on the WiFi adapter

The WiFi adapter is off by default. The GPIO 37 line controls the WiFi power line. Hi=On, Low=Off.

Turn-on the WiFi adapter:

echo 37 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio37/direction                                   
echo 1 > /sys/class/gpio/gpio37/value

Turn-off the WiFi adapter:

echo 0 > /sys/class/gpio/gpio37/value



EUR 140.00

CM3-HOME-B - Home automation carrier board for Raspberry CM3L module

Motherboard designed to provide a reliable Home Automation solution based on Raspberry Pi CM3L industrial module

Please note: This code is related just to the carrier board. The Raspberry CM3L module is not included

Otional parts:

  • CM3L - Raspberry Compute Module 3L (Product CM3L)
  • CM3-HOME-CASE Plastic enclusure (Product CM3-HOME-CASE)
  • WIFI-2 Wifi module
  • AN-WIFI-01 or AN-WIFI-01 WiFi antennas
| Product description || CM3-Home catalog |

EUR 7.00

WIFI-2 - WiFi USB module

OEM Small USB 2.0 IEEE 802.11 b/g/n Wi-Fi compliant module based on the RaLink RT5370N chip. It works at 3.3V and can be configured also in Access Point mode.

This model requires an external antenna model AN-WIFI-01 or AN-WIFI-02.

| Product description || Datasheet |

EUR 3.50

AN-WIFI-01 - WiFi pcb external antenna

WiFi PCB antenna with 11 cm cable and UMC 2mm connector to be plugged on WIFI-2 module.

| Antenna datasheet |

EUR 7.00

AN-WIFI-02 - WiFi external antenna with SMA cable
  • RF cable with panel mountable SMA connector and UMC 2mm connector to be plugged on a WIFI-2 module.
  • WiFi rubber antenna

| Antenna datasheet | Cable datasheet |

Sergio Tanzilli
System designer and Acme co-founder
Personal email:
Webpages: - -
Github repositories: and

Bruna Mandolino