Charmi Kalani| Quantity | Component name | |
| 1 | × | Node MCU |
| 1 | × | MQ135 Gas Sensor |
| 1 | × | MQ9 Gas Sensor |
| 1 | × | Repeater |
Breathlify
Breathlify. A device that gives real-time alerts about any dangers to the workers working in underground coal mines.
Breathlify. A device that gives real-time alerts about any dangers to the workers working in underground coal mines.
| Quantity | Component name | |
| 1 | × | Node MCU |
| 1 | × | MQ135 Gas Sensor |
| 1 | × | MQ9 Gas Sensor |
| 1 | × | Repeater |