Tom from Magic Smoke writes: This is my first time designing a PCB for MSP430. I really like the NRF24L01+ booster pack but I would like something smaller to use for remote temperature sensors. With that in mind I’ve designed a 24.5 x 50 mm PCB (2 on a 5×5 cm prototype) featuring MSP430G2553 and […]
Markus Gritsch writes: I and my little son built a small electric boat from a kit. However, the kit only offered turning on the motor with a switch, and let the boat cruise wherever fortune it may take. I thought why not improve it a bit by adding some RC capability. I had some left […]
Erich Styger writes: I’m using the tiny and inexpensive Nordic Semiconductor nRF24L01+ transceiver (see “Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board“) in many projects: it costs less than $3 and allows me to communicate with a proprietary 2.4GHz protocol in a low power way (see “IoT: FreeRTOS Down to the Micro Amps“). I have […]
Steve’s TinySensor server project, that is available at Github: Well after almost a year I decided it was time to update this project with improvements to both its hardware and software. On the hardware side, the server is still the original Raspberry Pi model B, but I’ve mounted the nRF24L01+ radio on a neat little Slice […]
Samy Kamkar has written an article detailing the build of his KeySweeper project: KeySweeper is a stealthy Arduino-based device, camouflaged as a functioning USB wall charger, that wirelessly and passively sniffs, decrypts, logs and reports back (over GSM) all keystrokes from any Microsoft wireless keyboard in the vicinity. All keystrokes are logged online and locally. SMS alerts […]
Kalle Löfgren writes: Today’s post will cover how I managed to get an Arduino pro mini (3.3V) to sniff the energy meters SPI and transmit the data wirelessly with a nRF24L01+ to an Arduino Nano connected to a computer. The neat thing with this setup is that the Arduino pro mini and the nRF fits […]
The NRF24L01+ is a popular wireless communications module from Nordic that interfaces well with MCU applications. In this detailed video tutorial, Kevin Darrah outlines how to use it with the Arduino. Source code is available from Kevin Darrah’s website.
Bajdi wrote an article on using an Arduino Due with a 5inch touch screen and a wireless nRF24L01 transceiver as a remote control: One of the things I wanted to try out was using the touch screen as a remote control. I have a lot of cheap nRF24L01 modules so I soldered one to the adaptor […]
Omri writes: In this long post I am going to describe my journey to sniff and decode popular digital wireless protocols off the air for very cheap. So cheap practicality anyone can obtain the equipment quickly. I was able to decode NRF24L01+ and Bluetooth Low Energy protocols using RTL-SDR. As far as I can see, […]
In relation to the previously posted nrf24L01+ wireless module, Kehribar shared his CR2032 powered node board in the forum: I also designed a 30.8 x 30.8 mm CR2032 powered node board for these modules. I’m waiting for my prototypes from OSHPark, but in the meantime here are the layout and schematic images.
Kehribar released a C-based portable nrf24L01+ library on GitHub: I tried to make this library as portable as possible therefore, in order to use this library, you only need to define couple of GPIO functions in your project and that’s it! Moreover, this library supports auto-retransmission and auto-ack features of the nrf24L01+ modules. nrf24L01+ modules […]
The nRF24L01+ ICs are 2.4GHz transceivers that only need a few external parts. They’re controlled by a simple SPI protocol, and two extra pins. The IRQ pin signals when data is available and can be used to wake a microconroller with an interrupt. The CE pin is an input activates/deactivates the transceiver. 126 channels are […]
Brian updated his MSPism RF transceiver design to version 2. He added a dual output low-drop-out voltage regulator and a LiIon battery jack. MSPism is a X-Bee compatible RF transceiver with an onboard MSP430 microcontroller, using a cheap Nordic nRF24L01+ module. The firmware is currently under development. Via the forum.