Wireless Humidity and Temperature Receiver Unit – Arduino

Rajkumar Sharma
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moderate
Tested
SKU: EL156960
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This project is the receiving end of a Wireless Humidity and Temperature monitoring system. The receiver unit is built around an Arduino microcontroller, utilizing the ATMEGA328 chip, which provides a reliable and efficient processing platform. The NRF24L01 transceiver module is used to receive data from the corresponding wireless sensor, while a 0.96-inch I2C OLED display is employed to show the received temperature and humidity values in real time.

Note: This Receiver board is compatible with Wireless Humidity and Temperature Transmitter

Key Features and Specifications

Operating Voltage: 5V DC
Display: 0.96-inch I2C OLED display for real-time temperature and humidity display
Wireless Communication: NRF24L01 transceiver module for reliable data reception
Microcontroller: Arduino ATmega328 chip for efficient processing and control

Arduino Code

The Arduino code is available for download, and users are instructed to burn the bootloader and upload the code using the Arduino IDE. The connection diagram for bootloader Arduino programming is also provided, along with additional resources for Arduino programming and bootloader information.

Resources

Programming ATMEGA328P microcontroller with Arduino IDE: https://www.electronics-lab.com/project/programming-atmega328p-microcontroller-with-arduino-ide/
Arduino To Breadboard example: https://docs.arduino.cc/built-in-examples/arduino-isp/ArduinoToBreadboard/

Overall, this project seems to be a compact and efficient solution for wirelessly transmitting temperature and humidity data.

Note: This Receiver board is compatible with Wireless Humidity and Temperature Transmitter – Arduino

Connections

CN1 OLED Display: Pin1 = VCC, Pin 2 = GND, Pin 3 = SLA/A5, Pin 4 = SDA/A4
CN2 NRF24L01 RF Module: Pin 1 = GND, Pin 2 = 3.3V, Pin 3 = D9, Pin 4 = D10, Pin 5 = D13, Pin 6 = D11, Pin 7 = D12, Pin 8 = D8
CN3 Programming Connector: Pin 1 = TX, Pin 2 = RX, Pin 3 = Reset, Pin 4 = GND, Pin 5 = VCC, Pin 6 = D11, Pin 7 = D12, Pin 8 = D13
CN4 Power: Pin 1 = VCC 5V DC, Pin 2 = GND
CN5: Solder Pad (Not Used)
CN6: Do Not Install
D1: Power LED
D2: Do Not Install

Schematic

Parts List

NO	QNTY.	REF.	DESC.	MANUFACTURER	SUPPLIER	SUPPLIER PART NO
1	1	CN1	0.96INC I2C OLED DISPLAY	MIDAS DISPLAY	DIGIKEY	3086-MDOB128064V2V-YI-ND
2	1	CN2	NRF24L01 RF MODULE	CHINA
3	1	CN3	8 PIN MALE HEADER PITCH 2.54MM	WURTH	DIGIKEY	732-5321-ND
4	1	CN4	2 PIN MALE HEADER PITCH 2.54MM	WURTH	DIGIKEY	732-5315-ND
5	4	D2,R3,CN5,CN6	DNP
6	1	C1	1uF/16V CERAMIC SMD SIZE 0805	YAGEO/MURATA	DIGIKEY
7	3	C2,C3,C4	0.1uF/16V CERAMIC SMD SIZE 0805	YAGEO/MURATA	DIGIKEY
8	2	C5,C6	22PF/25V CERAMIC SMD SIZE 0805	YAGEO/MURATA	DIGIKEY
9	1	D1	LED RED	OSRAM	DIGIKEY	475-1278-1-ND
10	1	R1	10K 5% SMD SIZE 0805	YAGEO/MURATA	DIGIKEY
11	1	R2	1K 5% SMD SIZE 0805	YAGEO/MURATA	DIGIKEY
12	1	R4	1M 5% SMD SIZE 0805	YAGEO/MURATA	DIGIKEY
13	1	U1	ATMEGA328TQPF-32	MICROCHIP	DIGIKEY	ATMEGA328P-AU-ND
14	1	U2	LM117-3.3V	TI	DIGIKEY	LM1117MP-3.3/NOPBCT-ND
15	1	X1	16Mhz	ECS INC	DIGIKEY	X1103-ND