Low cost pollution meter
A typical PM2.5/10 based meter costs around US$ 200. Here we present a meter for monitoring air particles, gas concentration, temperature, humidity and time, which costs around US$ 45 only. Block diagram of the air-quality meter is shown in Figure
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Different ARM architecture like v4/v4T(ARM7), Atmel/NXP/STM microcontroller functionalities / interface / firmware design and develop, Arduino, Raspberry Pi, PLL, DDS, Synthesizer, Internet of Things, logic level translators, Buffer, transceiver etc, PWM, converter, SMPS, buck, boost, Isolated voltage, current sensor, Temperature sensor, PIR sensor, Battery Bank charger, Snubber design, RF filter design, RF components selection, RF frequencies selection, Grounding isolation, EMI & EMC etc, pH, ORP, Conductivity measurement, AV TX & RX Modules, IR transmitter & Receiver, PTZ camera, TFT Display, DVR, Sonar, SICK, Motor, Gear Box, Motor Driver, GNSS, Different Xilinx FPGA architecture (7 Series FPGAs, Kintex-7, Zynq-7000), etc.
