Wireless voltage and resistance meter based on STC89S52 and bluetooth module HC-05

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Huang, Jie^1 ; Liu, Jianghua^1 ; Xia, Cuicui^1 ; Zhou, Guopeng^2

School of Electronics and Information Engineering, Hubei University of Science and Technology, Xiannning, China^1

Institute of Engineering and Technology, Hubei University of Science and Technology, Xiannning, China^2

关键词: Blue-tooth module;    Bluetooth communications;    Hardware circuits;    Maximum error;    Measurement range;    Software program;    STC89C52;    Voltage error;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/7/072007/pdf
DOI  :  10.1088/1757-899X/490/7/072007

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A wireless voltage and resistance meter based on STC89C52 and Bluetooth module HC-05 is introduced. The principle of voltage measurement and Bluetooth communication is introduced.The hardware circuit and the software program is analyzed. Measured data can be displayed on the LCD1602 or sent to the phone and computer through Bluetooth module HC-05. The measurement range of voltage is 0-5V and the maximum voltage error is 0.09V. The measuring resistance range is 20 ∼ 50K Ω and the maximum error is 395 Ω.