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:
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
CM3-HOME-B - Home automation carrier board for Raspberry CM3L module
Availability: April 2019
Motherboard designed to provide a reliable Home Automation solution based on Raspberry Pi CM3L industrial module
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 |
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.
AN-WIFI-02 - WiFi external antenna with SMA cable