SKU: 37307544871

SparkFun RFM69 Breakout (915MHz) Boards, General

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Description

SparkFun RFM69 Breakout (915MHz) Boards, GeneralThis is the SparkFun RFM69 Breakout, a small piece of tech that breaks out all the pins available on the RFM69HCW module as well as making the transceiver easy to use. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM (Industry, Science and Medicine) radio band. Its perfect for building inexpensive short range wireless networks of sensors and actuators for home automation, citizen science and more. This

This is the SparkFun RFM69 Breakout, a small piece of tech that breaks out all the pins available on the RFM69HCW module as well as making the transceiver easy to use. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM (Industry, Science and Medicine) radio band. It’s perfect for building inexpensive short-range wireless networks of sensors and actuators for home automation, citizen science and more.

This RFM69HCW operates on the 915MHz frequency and is capable of transmitting at up to 100mW and up to 300kbps, but you can change both of those values to fit your application. For example, you can maximize range by increasing the transmit power and reducing the data rate, or you can reduce both for short-range sensor networks that sip battery power. At full power and with simple wire antennas, the RFM69 breakout can get messages from one side of a large office building to the other through numerous internal walls. In open air you can reach 500 meters or more. With more complex antennas and modulation schemes, similar parts have successfully transmitted from space to the ground (by very smart amateur radio enthusiasts; your mileage may vary)!

The RFM69HCW uses an SPI (Serial Peripheral Interface) to communicate with a host microcontroller, and several good Arduino libraries are available. It supports up to 256 networks of 255 nodes per network, features AES encryption to keep your data private, and transmits data packets up to 66 bytes long.

SparkFun sells two versions of the RFM69HCW: this 915MHz version and a 434MHz version. Although the ISM band is license-free, the band itself is different in different areas. Very roughly, 915MHz is for use in the Americas, and the 434MHz version is for use in Europe, Asia and Africa. Check your local regulations for other areas.

Get Started with the RFM69HCW Hookup Guide

Dimensions: 0.8" x 1.1"

Features:

  • Transmit power: -18dBm (0.016mW) to +20dBm (100mW) in 1dBm steps
  • Receive sensitivity: down to -120dBm at 1.2kbps
  • Modulation types: FSK GFSK MSK GMSK OOK
  • Bit rates (FSK): 1.2kbps to 300kbps
  • Voltage range: 1.8V to 3.6V
  • Current consumption: 0.1uA sleep, 1.25mA standby, 16mA receive, 130mA transmit (max)
  • Encryption: AES 128-bit (optional)
  • Packet buffer (FIFO): 66 bytes

Documents:

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SKU: 37307544871

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4.4 ★★★★★
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Verified Purchase
Christopher
Massapequa, US
★★★★★ 5
Great edger for home use
This WORX 12 Amp Electric Lawn Edger did exactly what I needed it to do. It was easy to use, had plenty of power for cleaning up the edges around my driveway and sidewalk, and gave the yard a much cleaner, finished look. I like that it is corded because I do not have to worry about batteries dying, and it has enough power for regular homeowner use. The first pass took a little extra time since the edges needed cleaned up, but once I got going, it worked great. Overall, this is a solid edger/trencher for the price, and I would definitely recommend it for anyone wanting cleaner lawn edges without dealing with gas.
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Reviewed in the United States on May 29, 2026
R
Verified Purchase
rmkd
Birmingham, US
★★★★★ 5
Little work horse!
I LOVE the look of an edged sidewalk. After a few calls to some local landscape companies, I couldn't find anyone with an edger. Crazy! So I bought myself this one! Super easy to put together and just as easy to use. My walk hasn't been edged for many years and was very overgrown. I was nervous that I wouldn't be able to run this thing, but this little work horse did the job for me and did it perfectly. It will be super easy to keep it edged now. Extremely happy with this purchase.
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Reviewed in the United States on June 1, 2026
B
Verified Purchase
B. Colonna
Phoenix, US
★★★★★ 4
Takes The Edge Off!
This is a decent product. If you are going to do a lot of edging, or want to do deep trenching to run conduit, etc. this is NOT the product you want. It is electric, so you are tethered to an outlet, and of course, the farther you go on extension cords, the less of the 12 amp juice you get. It also trenches to 1 1/2", which is OK, but not enough to dump conduit, etc. That said, this is a very good edger. Out of the box, it is minimal assembly. You connect the three pieces of the shaft, removing some edge tape from it, and inserting two metal bolts and plastic knobs, similar to most lawn mowers these days. Then you install the plastic handle with another bolt. That's it. For use, you have a lever which you pull up for edging and lower for trenching to adjust the group clearance. You also choose 1", 1/4", or 1 1/2" depth. Then you plug it in. There is a white line on top of the blade cover so you know where the blade is. You just pull the trigger to run the blade, or release the trigger to stop the blade. Be careful not to lose sight of your electric cord so you don't hit it! I edged along my driveway, about 50' on each side, as well as my front of my lawn, so another 85' along the lawn and the apron (both sides). That's over 350'. It cut through the grass and dirt easily. It struggled a couple of times, on some tough mounds of grass, but like any other tool, you don't force it when that happens, just back up and do that area again slowly. If you come too close to blacktop, Belgian block, stone, etc. you will see sparks so you will know. Just keep in mind, this is an edger. You will be left with the severed grass/sod to remove. In my case I was loooong overdue for a edging, so I spent a long time scraping the sod off the pavement with a shovel. I expect with more frequent ending, and now working with a cleaner edge, this will be less of an issue. Either way, that is not on the product, but the state of the lawn. The edger has 2 read wheels and one smaller front wheel so , although this is not like a big, gas-powered curb jumping unit, you have the option of attacking a curb edge from either the blade side or other side of the edger, so you can get real close to a Belgian block curb. I also did the edge where my grass meets my mulched flower bed, but that was more of a trimming than a edge removal. Overall, the Work edger did as good, or better, a job than my string trimmer, and I didn't have to stop every few minutes to rewrap string. Plus it trenched enough to give me a definitive edge, whereas the string edger just cuts into the grass, not a real trench.
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Reviewed in the United States on September 28, 2020
J
Verified Purchase
Jason
Grantham, US
★★★★★ 5
Does the job!
Puts in the work! Knocked out my driveway no problem. Unsure about longevity but it’s great for a homeowner. Easy to assemble. Easy to use. Adjustment is nice along with the guide plate.
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Reviewed in the United States on May 5, 2026
L
Verified Purchase
Lynetta Mason
Omaha, US
★★★★★ 5
Easy to use for a clean looking cut!
I do wish there was a cordless version but I'm so glad I bought this. It took some time to edge everything the first time because I had to cut the lines but it's been a breeze ever since. I just walk the perimeter of the yard and driveway and it does it's job with ease. The front wheel has three settings which determines how far down the blade cuts and the blade has two settings for edging or trenching. The handle is stationary but it can be lifted up or down. There's a guideline on top of the blade guard that helps identify where the blade is going to make the cut. TIP: Lean it back on the back wheels before pulling the trigger and slowly bring it down because it will jump if the blade isn't lined up and touches the concrete. It doesn't roll well in the grass but it's very smooth when rolled on the concrete. It's definitely worth having to give a clean and finished look. It's well built and isn't too heavy but definitely has some weight to it. It's only loud when the blade hits the concrete otherwise it sounds like a drone. The only complaint I have is that I have to watch the cord closely other than that it's the perfect tool to give a clean look to the yard.
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Reviewed in the United States on August 5, 2025

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