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Description
Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE)#2479 Would you like to add powerful and easy to use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE UART Friend! The Bluefruit LE UART Friend makes it easy to add Bluetooth Low Energy connectivity to anything with a hardware or software serial port. We even have nice
#2479Would you like to add powerful and easy-to-use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE UART Friend!
The Bluefruit LE UART Friend makes it easy to add Bluetooth Low Energy connectivity to anything with a hardware or software serial port. We even have nice hardware flow control so you won't have to think about losing data. Connect to your Arduino or other microcontroller or even just a standard FTDI cable for debugging and testing.
This multi-function module can do quite a lot! For most people, they'll be very happy to use the standard Nordic UART RX/TX connection profile. In this profile, the Bluefruit acts as a data pipe, that can 'transparently' transmit back and forth from your iOS or Android device. You can use our iOS App or Android App, or write your own to communicate with the UART service.
So it's a fancy pants Wireless UART Adapter?
The board is capable of much more than just sending strings over the air! Thanks to an easy to learn AT command set, you have full control over how the device behaves, including the ability to define and manipulate your own GATT Services and Characteristics, or change the way that the device advertises itself for other Bluetooth Low Energy devices to see. You can also use the AT commands to query the die temperature, check the battery voltage, and more, check the connection RSSI or MAC address, and tons more. Really, way too long to list here!
Download our free Android/iOS app and you're ready to rock!
Using our Bluefruit iOS App or Android App, you can quickly get your project prototyped by using your iOS or Android phone/tablet as a controller. We have a color picker, quaternion/accelerometer/gyro/magnetometer or location (GPS), and an 8-button control game pad.
You can do a lot more too!
- The Bluefruit can also act like an HID Keyboard (for devices that support BLE HID)
- Can become a BLE Heart Rate Monitor (a standard profile for BLE) - you just need to add the pulse-detection circuitry
- Turn it into a UriBeacon, the Google standard for Bluetooth LE beacons. Just power it and the 'Friend will bleep out a URL to any nearby devices with the UriBeacon app installed.
- Built in over-the-air bootloading capability so we can keep you updated with the hottest new firmware. Use any Android or iOS device to get updates and install them!
Why use Adafruit's Module?
There are plenty of BLE modules out there, with varying quality on the HW design as well as the firmware. So why should you go with this one?
One of the biggest advantages of the Adafruit Bluefruit LE family is that we wrote all of the firmware running on the devices ourselves from scratch. We control every line of code that runs on our modules ... and so we aren't at the mercy of any third party vendors who may or may not be interested in keeping their code up to date or catering to our customer's needs.
Because we control everything about the product, we add features that are important to our customers, can solve any issues that do come up without begging any 3rd parties, and we can even change Bluetooth SoCs entirely if the need ever arises!
Features
- ARM Cortex M0 core running at 16MHz
- 256KB flash memory
- 32KB SRAM
- Transport: UART @ 9600 baud with HW flow control (CTS+RTS required)
- 5V-safe inputs (Arduino Uno friendly, etc.)
- On-board 3.3V voltage regulation
- Bootloader with support for safe OTA firmware updates
- Easy AT command set to get up and running quickly
- Dimensions: 21mm x 32mm x 5mm / 0.8" x 1.26" x 0.2"
- Weight: 3.4g
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4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Truly Mighty! Best patches we’ve found.
Size: 36 Count (Pack of 1)
These patches live up to the name! They are hands-down the best pimple patches I’ve used. The versatility and fit are perfect, and they actually stay put. I have very sensitive skin and have had zero issues with irritation, which is a huge win. My daughter uses them too and absolutely loves how effective they are. A must-have in our house!
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Reviewed in the United States on April 30, 2026
★★★★★ 5
A total game changer (where were these when I was a teen?!)
Size: 72 Count (Pack of 1)
I honestly wish these had been around when I was younger! The Mighty Patch Original is hands-down the most effective way I’ve found to deal with stubborn whiteheads. Instead of picking at my skin and making things worse, I just pop one of these on at night and let it do the work while I sleep.
By the morning, you can actually see the gunk it pulled out right on the patch (gross, but strangely satisfying). It significantly reduces the size and redness of the zit in just one use, and because it covers the spot, it stops me from touching it and causing more irritation.
The 72-count pack is a great value and lasts quite a while. They stay put all night, even if you toss and turn, and they’re clear enough that you almost forget you’re wearing them. If you’re looking for a stress-free way to clear up your skin overnight, these are a must-have!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Works on all skin types
Size: 36 Count (Pack of 1)
What an amazing product! I'm in my 40s and still experience occasional acne. I purchased Mighty Patch, and after wearing it overnight, my blemish was noticeably cleared up by morning.
I have fairly dry skin and already use quality skincare products both morning and night, so I was impressed by how well it worked. My 17-year-old son also tried one when he started getting a few breakouts, and it cleared up his blemish as well. His skin is much oilier than mine, which shows that this product can be effective for both dry and oily skin types.
I’m very happy with the results and will definitely be purchasing it again!
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Reviewed in the United States on May 30, 2026
★★★★★ 4
Works as expected! Good value
Size: 36 Count (Pack of 1)
I bought these because I ran out of Curology patches that I got with the free trial. These work similarly; you’ll need one or two patches to fully get rid of the pimple— it depends on how large & inflamed it is. Even if you need two the first patch will still a do a good job of draining most the gross fluid out.
I like that these are more translucent/transparent than some other brands I’ve seen. They’re not obnoxious looking if you’re wearing one or two in the daytime.
The adhesion has been great so far. I’ve tried it on bare and moisturized skin and either way it holds up. Once it’s been stuck in place for a few minutes you can apply a moisturizer on your face OVER the patches without them slipping off. Just use a gentle touch.
There’s probably cheaper pimple patches from smaller brands but $4.49 (before tax) is definitely a reasonable cost for 30 patches So I gave it 4 stars for value for money.
My only qualm is that the small size pimple patches could stand to be at least slightly bigger. Only new closed comedones that are just forming are that small (typically). Otherwise I’m satisfied with this purchase.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Repurchasing for sure
Color: Zero Pore Pads, Size: 70 Count (Pack of 1)
These toner pads have genuinely made my skin look smoother, brighter, and more refreshed. They’re super easy to use and feel really gentle while still giving noticeable results. My skin feels cleaner and softer after using them, and I’ve especially noticed improvement in texture and overall glow.
I also love that the pads are really saturated without dripping everywhere, and they don’t irritate my skin. They’ve become such an easy part of my routine, especially on days when I want my skin to look extra fresh and glowy. Definitely one of the better skincare purchases I’ve made lately.
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Reviewed in the United States on May 18, 2026