This is the 915MHz base RFM69HCW Wireless Transceiver that is found on our RFM69 Breakout. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM (Industry, Science and Medicine) band, a set of frequencies set aside for low-power, short-range, license-free radios. It’s perfect for building inexpensive short-range wireless networks of sensors and actuators for home automation, citizen science and more. This RFM69HCW module 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, we 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. 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. Operating Voltage: 1.8V to 3.6V
G**N
Works great, a caution when level-shifting
The Reset pin is active high, so they installed a pull-down resistor on it (prolly so the unit will still work if you leave Reset unconnected). The pull-down resistor made my 5v-to-3.3v level-shifter flake out, so after some head scratching, found that just using a resistor divider for level-shifting works fine. Used 2.2k and 4.7k resistors.
C**L
These work great.
I have used all of them and they work just great. I had a small issue with one and the vendor's customer service was superb. I will continue to buy these as needed. I got the 915 Mhz version.
A**R
Works as expected with arduino
Works as expected with several arduino libraries, but be aware the headers aren't standard 0.1 so soldering may be a challenge.
A**R
Low quality
The soldering of the module seems very low quality, eg the resistors right side of the RF69 chip. I’ve tried 2 of the 4 modules and neither of them work. Bought the same module from a different supplier and the soldering looks much better.
S**.
Great product!
Love this product! Works great with an Arduino and was easy to implement.
D**G
RFM69HCW boards poorly manufactured
The RFM69HCW boards were very poorly manufactured with SMT chips so crookedly and poorly soldered that it appears to have been a hand job by amateurs. I was not confident that these boards could be safely powered.
Trustpilot
5 days ago
1 month ago
