HSRW EOLab Students Wiki amc2022:grouph

amc2022:grouph:datasheet

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

Sleep Modes and Power Consumption for ESP-32 source:

amc2022:grouph:dht22_humidity_temperature_sensor

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

DHT22 The DHT22 sensor is composed of two parts, the temperature and the humidity as shown in Figure #. The connection to the MCU is done using the Digital pins, because the sensor’s circuit converts analog signals to digital, and with the integration of the DHT.h library, found here$$ Beta_{T1\over T2} = {T2 \cdot T1\over T2-T1} \cdot ln {R1 \over R2 }$$

amc2022:grouph:esp_32

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

ESP32 Figure 1 ESP 32 Controller. Source: The ESP32 group of system on a chip microcontroller incorporates integrated Wi-Fi and dual-mode Bluetooth and is affordable and low energy. Espressif Solutions, a Chinese business firm with its headquarters in Shanghai, invented and launched Esp32. Dual-core CPU, Modular multilevel co-processor, and 8…

amc2022:grouph:here

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

Build and Set-Up Deep Sleep ESP 32 figure 4.1 Deep-Sleep set up for ESP32/ Schematics figure 4.2 Graph depicting Deep-Sleep schematics set up for ESP32/ Code & Description *//There are 2 ways to wake up a system, those are called Interrupts. *//hardware Interrupts are based on external events where signals are sent to the GPIO. *//Software Interrupts occur when we program the device, like through a wake up alarm or timer. #define uS_TO_S_FACTOR 1000000 *//Equation to convert…

amc2022:grouph:humidity_temperature_sensor

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

DHT 11 Figure 1 DHT-11 Temperature and Humidity Sensor and pins. Source:

amc2022:grouph:link

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

Build figure 5.1 Setup showing the connections for battery voltage reading on ESP32 Schematics figure 5.2 Schematic for battery voltage reading Code & Description *//Reading of voltage is done by the Analog Pin reader. *//Because the max input voltage on the pins is 3.3 V we cant directly read the 9V battery voltage. int potPin = A0; // Analog pin has to be ADC 1, because ADC 2 are used by wifi and wont work int potValue; float voltage =0; // float becaus…

amc2022:grouph:mq2

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

MQ 2 The MQ2 gas sensor was used to determine the concentration of gasses such as LPG (liquid petroleum gas), carbon monoxide, and smoke from 200 to 10000ppm, this is a measurement of concentration of molecules in a volume, for example if we have a concentration of CO2 of 200ppm. Out of one million gas molecules in a volume we can say that 200 are CO2. MQ2 is a metal oxide semiconductor. It detects gasses based on the change of resistance of the sensing material when the gas comes in contact…

amc2022:grouph:mq7

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

MQ 9 Figure 1 MQ9 Sensor. Source:

amc2022:grouph:start

Anonymous (anonymous@undisclosed.example.com) — 2023-01-05T14:38:56+00:00

1. Abstract Our project is based on the idea of being able to monitor the air quality of any place with a simple cost effective kit. In the market there are lots of options at high prices with questionable reliability. Our intention is to give a step by step breakdown of how with an Arduino kit anyone is able to build their own air monitor. The importance of this project relies on two things: using accessible materials and learning how to program those materials to access the data and have a vi…