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The Blues Wireless story began with prepaid low-power cellular, all wrapped up in a developer-friendly package. Today we mark a new chapter as we bring another connectivity option online: the Wi-Fi Notecard.

wi-fi notecard features

Why Wi-Fi?

Cellular is the most ubiquitous (and secure) network connectivity option available. However, we’ve heard from many customers who also wanted a Wi-Fi option. Why? Well, you provided us with two key use cases:

  1. You have mixed deployments where cellular makes sense at Location A, and Wi-Fi at Location B.
  2. When prototyping, you’d rather use Wi-Fi instead of cellular to save on Notecard cellular data usage.

Let’s see how the Wi-Fi Notecard can help.

Be sure to consult the Wi-Fi Notecard datasheet for additional technical details.

What the Wi-Fi Notecard Provides

While there is no shortage of Wi-Fi modules available for IoT developers, the Wi-Fi Notecard differentiates itself in five key ways:

It’s swappable with the Cellular Notecard

If you’re working on an IoT deployment that has mixed access to Wi-Fi and cellular, the Wi-Fi Notecard is fully hardware-interchangeable with the Cellular Notecard on any Notecarrier. This allows you to use different connectivity methods on the same PCB design with the same antennas.

wi-fi notecard dimensions

It maintains Notecard API compatibility

Building off of the “swappable” nature of the Wi-Fi Notecard, you can continue to use the same Notecard APIs you’ve been using with the Cellular Notecard (the exception being any Wi-Fi or cellular/GPS-specific requests and responses!).

// Wi-Fi or Cellular:

{
  "req": "note.add",
  "file": "sensors.qo",
  "body": {"temp": 72.22 },
  "sync": true
}

It provides secure communications from device-to-cloud

The Wi-Fi Notecard and Notehub.io provide end-to-end data security: from your device, to Notehub.io, and to your cloud using TLS. You can also optionally encrypt your data.

It’s a low-power Wi-Fi module

Like the cellular Notecard, the Wi-Fi Notecard is low-power by default, to the tune of ~8uA when idle. Network connectivity over Wi-Fi is only used on a periodic basis by default, meaning your device doesn’t have to sustain a network connection, thus saving power.

Note that the Wi-Fi Notecard only connects to 2.4GHz access points (another power-saving feature).

It’s easy to set up

One of the advantages of the cellular Notecard is its zero-friction getting started experience, free from device provisioning and certificate management. We’ve also made the Wi-Fi Notecard setup experience as easy as possible by providing both an API to connect to a Wi-Fi access point (via card.wifi):

{
  "req":"card.wifi",
  "ssid":"<ssid name>",
  "password":"<password>"
}

…or alternatively through a UI on your smartphone to select the Wi-Fi access point you need:

wi-fi notecard setup

Get Your Wi-Fi Notecard

We welcome you to accelerate your IoT solution with the new Wi-Fi Notecard!

Buy a standalone Wi-Fi Notecard, or buy a Feather starter kit or Raspberry Pi starter kit that include Cellular AND Wi-Fi Notecards.

Regardless of the Notecards you buy (cellular or Wi-Fi), you can follow the same quickstart experience.

Happy Hacking…on Wi-Fi! 👩‍💻

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