Does your brand new project use hydrogen, or are you experimenting with fuel cells at home. Do you want to repeat the fate of Hindenburg? We hope the answer is no, and so this high-specific hydrogen sensor will help to avoid an explosion.
This sensor is based on the MQ-8 gas analyzer. The sensor outputs an analog signal which is proportional to the hydrogen content in the air.
A heating element is built into the module's gas analyzer, which is necessary for the chemical reaction to occur. Therefore, during operation the sensor will be hot - this is normal.
You can use different voltages for sensor logic and heater operation. Moreover, you can programmatically turn on and off the heater, which will significantly extend the life of the device.
In the general case, the sensor is connected by two 3-pin jumper cables. The first is for power to the sensor and the sensor readings, while the second to energize the heating element in the sensor. If there is no need to manually control the heater, only attach the first cable and supply the heater with a jumper.
There are several different ways to wire this module:
Troyka Shield. The most straightforward method. Connect the module to a pin group on Troyka Shield with the 3-pin jumper cable and you’re ready to interface with it from your Arduino.
Troyka Slot Shield. The best choice for quick prototyping. Using slots on the shield, you can get rid of cables. The module will be held securely in place using both pin headers.
Breadboard. For advanced use. Troyka pin headers have 0.1” spacing which is compatible with any breadboard. Simply wire the module like you would do with any IC.