Hey, I may need your help to design a wireless Bluetooth sensing device module and make an applet that connects the sensor device with my iPhone. My sensor sample is conducting polymer-based film, the original resistance of samples is from 10k-50kΩ (the gas sensor sample in air), the response (△R/R0) of target gas sensing is about 3%-30%. Therefore, can you help me design a sensing device and an iPhone applet to show the resistance (or current) change during gas sensing? The detail of my samples and the similar wireless Bluetooth sensing device module as shown in the below references.
Wu, Guodong, et al. "A wearable mask sensor based on polyaniline/CNT nanocomposites for monitoring ammonia gas and human breathing." Sensors and Actuators B: Chemical 375 (2023): 132858.
Liang, Qianqian, et al. "Self-Stretchable Fiber Liquid Sensors Made with Bacterial Cellulose/Carbon Nanotubes for Smart Diapers." ACS Applied Materials & Interfaces (2022).
recommend an ESP32 with WiFi, Bluetooth classic and BLE - am internet search will give you plently of links
if you don't already have an iPhone or Android app Mit app Inventor is a useful tool