IoT | Embedded Technology
Embedded Technology – WiFi Modules
Embedded Technology refers to the WiFi hardware modules along with their software that go into the actual IoT product, enabling it to connect to the network.
These modules come in several form factors and can be chosen based on two key characteristics:
- Module assembly method
- External or onboard antenna
- With sensors on-board
| Assembly Method
|External Antenna||Nano WiReach G2||Pico WiReach SMTS-EX|
|Onboard Antenna||Nano Socket iWiFi G2||Pico WiReach SMTS-OB|
|Sensors Onboard||OneSense iWG2 N3|
Choosing the antenna type depends on the design and use of the IoT product.
Products with a plastic housing may choose the onboard antenna, while products designed with a metal housing must go with the external antenna.
In general, the WiFi signal range with an external antenna will be around twice or three times longer than with an onboard antenna. So, if you need the longer WiFi range, opt for the external antenna.
The onboard antennas can provide a good signal for a range of about 30-40 meters in open areas.
Host vs. host-less operation
Each of the modules can be controlled by a CPU host processor via a RS-232, SPI or USB interface.
Simple AT+i commands can be issued by the host CPU to the module to implement a wide array of functions like connecting to a WiFi access point, sending data to a remote server, setting up parameters on the module, etc.
For host-less operation, I/O pins on the module can be configured to input/output and can be controlled and accessed remotely. In this mode, the module will automatically connect to Connect One’s Device Connectivity Server (DCS) which is a cloud solution for managing devices remotely over the internet.
OneSense iWG2 N3 is a secure embedded Wireless LAN module equipped with five (5) environment sensors that can easily connect embedded devices and route sensor data through 802.11 b/g/n Wireless LAN to the cloud.