Nrf24Duino is a arduino based board, with attached 2.4G nrf24l01+ wireless transceiver, low cost and design to work for short distance wireless communication.
In open area distance can reach 500 meters, but at indoors environment it can only make 10-50 meters transmission, Nrf24l01 has a bad capability the transmitting through walls.
On board control IC Atmega328, which is already flashed arduino bootloader and RF24 (getstartted) sketch.
On board 8M-bit (old 4M-bit) Winbond SPI Flash memory, use SPI flash library.
On board programming LED D9. No power LED.
Pre-soldered NRF24L01, not soldered pin headers. Find more information about this Nrf24l01 board here.
R1.6 New Features:
Bootloader firmware change to Arduino Pro-mini 3V3/8M for low power purpose.
Power Pin are “3V3, GND, VIN, 3V3”, VIN pin can be disconnected, support to use boost or buck board, for example our mini boost board. Use two AA battery, board can keep working when power is drained down to 1.8V.
NRF IRQ interrupt pin is NOT connected to arduino D2 interrupt pin, during our test it seems influence the range, so it is discarded in this version. Board can work all fine, but this function still not be able to be used.
Total board size within 23x37mm (old 4.5×2.5CM), arduino pro mini similar layout design.
It's a small USB to TTL serial tool, using the PL2303 chip.
You can use it to connect some serial device to your PC via USB port, an avr, an msp430 or an stm32 for example.
It's very cheap compared to the ft232 alternative and works very well, up to more than 1mbit/s.
This is a half-bridge load sensor, which is widely used in weight scales. When the half-bridge is being stretched, it sends signal via the red signal wire. You can use multiple load sensors simultaneously to increase the capacity range.
The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature.