Posts with «nrf24l01» label

Monitor your sleep quality with Arduino

While it can be difficult to get enough sleep, at least you can try to make it as restful as possible when you are in bed. That’s the idea behind this project by Julia Currie and Nicholas Sarkis, who developed an Arduino Nano-based sleep monitor for their final ECE 4760 project at Cornell.

The bulk of the monitoring device takes the form of a glove which measures heart rate using an IR sensor, along with movement via an accelerometer. Breathing is recorded using a conductive band wrapped around the user’s chest, which changes resistance depending on how it is stretched.

The Nano mounted to the glove collects this information, and transmits it wirelessly using an nRF24L01 chip to a PIC32 microprocessor on a base station. Data is then graphed nicely on a TFT display for further analysis.

You can read more about the project here and see the video below!

Talk to the (low-cost robotic) hand!

Though this low-cost robotic hand by Maker “MertArduino” might not be the best platform for manufacturing, or even world domination, it does show off some interesting physical build techniques. The DIY device can mimic a human’s hand wirelessly via a pair of Arduino Unos and nRF24L01 modules.

For construction, the fingers and thumb are made out of springs and foam, and nylon cords are used to pull them closed with a small servo for each digit. Control is accomplished by flex sensors attached via zip ties to a glove. It’s a great demonstration of how you don’t actually need a 3D printer or other advanced CNC machinery to craft something really unique!

You can see the project in the video below, and check out more hacks on Mert Arduino’s YouTube channel!

The NRF24L01 Wireless Motor Speed Control System with Arduino

Let's Make Robots 19 Dec 07:26
arduino  avr  nrf24l01  

The NRF24L01 Wireless Motor Speed Control System with Arduino

Let's Make Robots 19 Dec 07:26
arduino  avr  nrf24l01  

The NRF24L01 Wireless Motor Speed Control System with Arduino

Let's Make Robots 19 Dec 07:26
arduino  avr  nrf24l01  

The NRF24L01 Wireless Motor Speed Control System with Arduino

Let's Make Robots 19 Dec 07:26
arduino  avr  nrf24l01  

R/C with arduino & NRF24L01+ 2.4GHz Antenna Wireless Transceiver Module

Ok, I think it's about time I start delving into the Radio Controled business. Initially I though I would just canabilize a rc toy and hack it's parts, and also use one of R/C transmitters I have at home (2.4GHz & 25MHz). However, the 2.4GHz is for my micro heli and I don't have any intentions of disposing of it seeing that it still flies (even after so much abuse :p). The other (35Mhz) is a micro r/c I wouldn't mind scraping that, however the car is too tiny, and the circuit-wire mashup inside does not appear very appealing.

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Let's Make Robots 20 Jul 18:22
2.4ghz  arduino  nrf24l01  rc