Figure 4 Calibration and test circuit for smoke and gas sensors
Related Figures (6)
The ATMEGA328p microcontroller was chosen because of the number of its available input/output ports which was sufficient for the project construction without any redundancy, the ease of its programming and the affordability. Fig. 1 gives the block diagram of the construction. The block diagram presents a pictorial explanation of how each component is connected in the physical implementation. Fig 1: Block diagram of the physical implementation Fig 2: Flow chat for the microcontroller’s programming Fig 3: Oscilloscope verification of power supply waveform Fig 5: Fully soldered circuit on Vero board Fig 6: Modeled market shops
