Sensors - Revision history

Leo at 20:51, 12 October 2020

2020-10-12T20:51:17Z

← Older revision		Revision as of 20:51, 12 October 2020
Line 9:		Line 9:

	===CCS811 Air Quality Sensor===		===CCS811 Air Quality Sensor===
	The CCS811 air quality sensor can measure Volatile Organic Compounds (VOCs). The internal microprocessor will calculate the equivalent CO2 value from the VOC measurement. These cost about $8 USD. The device or the library driving it is causing issues with the I2C bus which causes the entire bus to freeze. If you want to measure CO2, I would recommend using the MH-Z19 which actually measures CO2.		The CCS811 air quality sensor can measure Volatile Organic Compounds (VOCs). The internal microprocessor will calculate the equivalent CO2 value from the VOC measurement. These cost about $8 USD. The device or the library driving it is causing issues with the I2C bus which causes the entire bus to freeze. If you want to measure CO2, I would recommend using the MH-Z19 which actually measures CO2 rather than eCO2.

	The datasheet can be found at: https://www.sciosense.com/wp-content/uploads/2020/01/CCS811-Datasheet.pdf		The datasheet can be found at: https://www.sciosense.com/wp-content/uploads/2020/01/CCS811-Datasheet.pdf

Leo: /* MH-Z19 CO2 Sensor */

2020-08-06T20:08:02Z

MH-Z19 CO2 Sensor

← Older revision		Revision as of 20:08, 6 August 2020
Line 9:		Line 9:

	===CCS811 Air Quality Sensor===		===CCS811 Air Quality Sensor===
	The CCS811 air quality sensor can measure Volatile Organic Compounds (VOCs). These cost about $8 USD.		The CCS811 air quality sensor can measure Volatile Organic Compounds (VOCs). The internal microprocessor will calculate the equivalent CO2 value from the VOC measurement. These cost about $8 USD. The device or the library driving it is causing issues with the I2C bus which causes the entire bus to freeze. If you want to measure CO2, I would recommend using the MH-Z19 which actually measures CO2.

	The datasheet can be found at: https://www.sciosense.com/wp-content/uploads/2020/01/CCS811-Datasheet.pdf		The datasheet can be found at: https://www.sciosense.com/wp-content/uploads/2020/01/CCS811-Datasheet.pdf
Line 57:		Line 57:
	Using I2C, the device is on address 0x57.		Using I2C, the device is on address 0x57.

	==== I2C Freezing Issue ====		====I2C Freezing Issue====
	The sensor randomly causes the I2C bus to freeze after an hour or so. This issue is discussed at https://github.com/arendst/Tasmota/issues/3364.		The sensor randomly causes the I2C bus to freeze after an hour or so. This issue is discussed at https://github.com/arendst/Tasmota/issues/3364.

Line 69:		Line 69:
	}}		}}

	==== Sensor Broke? ====		====Sensor Broke?====
	The first sensor I tried to use worked for a bit, but the I2C issue cropped up. I then soldered it to a protoboard thinking the issue may be related to the breadboard, but then it completely stopped working. ReadData returned 24 which suggests an issue with the heater?		The first sensor I tried to use worked for a bit, but the I2C issue cropped up. I then soldered it to a protoboard thinking the issue may be related to the breadboard, but then it completely stopped working. ReadData returned 24 which suggests an issue with the heater?

Leo: /* CCS811 Air Quality Sensor */

2020-08-06T18:34:37Z

CCS811 Air Quality Sensor

@@ Line 10: / Line 10: @@
 ===CCS811 Air Quality Sensor===
 The CCS811 air quality sensor can measure Volatile Organic Compounds (VOCs). These cost about $8 USD.
 {| class="wikitable"
 |'''Pin Number'''
@@ Line 54: / Line 56: @@
 Using I2C, the device is on address 0x57.
 ===MQ135 Air Quality Sensor===

Leo: /* BMP085, BMP180, BMP280 */

2020-08-06T04:03:35Z

BMP085, BMP180, BMP280

← Older revision		Revision as of 04:03, 6 August 2020
Line 49:		Line 49:
	To use the sensor:		To use the sensor:

	# Connect Vcc and Ground		#Connect Vcc and Ground
	# For a ESP8266, connect SCL and SDA (I2C) to D1 and D2 respectively.		#For a ESP8266, connect SCL and SDA (I2C) to D1 and D2 respectively.
	# Connect WAK to ground		#Connect WAK to ground

	Using I2C, the device is on address 0x57.		Using I2C, the device is on address 0x57.
Line 108:		Line 108:
	===BMP085, BMP180, BMP280===		===BMP085, BMP180, BMP280===
	These BMPs are atmospheric pressure sensors. They use I2C or SPI. The BMP280 appears to have superseded and are readily available on Ebay for around $0.50 and $1 USD each.		These BMPs are atmospheric pressure sensors. They use I2C or SPI. The BMP280 appears to have superseded and are readily available on Ebay for around $0.50 and $1 USD each.

			The BMP280 I obtained appear on address 0x76. If you are using the Adafruit library, you need to use the BMP280_ADDRESS_ALT address.

	===MAX30102===		===MAX30102===

Leo: /* MH-Z19 CO2 Sensor */

2020-07-27T02:08:13Z

MH-Z19 CO2 Sensor

← Older revision		Revision as of 02:08, 27 July 2020
Line 47:		Line 47:
	\|Single address select bit to allow alternate address to be selected		\|Single address select bit to allow alternate address to be selected
	\|}		\|}
			To use the sensor:

			# Connect Vcc and Ground
			# For a ESP8266, connect SCL and SDA (I2C) to D1 and D2 respectively.
			# Connect WAK to ground

			Using I2C, the device is on address 0x57.

	===MQ135 Air Quality Sensor===		===MQ135 Air Quality Sensor===
			This module will return a high signal when the air quality meets a certain criteria.

	===DHT 11, DHT22===		===DHT 11, DHT22===
Line 103:		Line 111:
	===MAX30102===		===MAX30102===
	The MAX30102 is a heart rate monitor and pulse oximeter biosensor. These modules cost about $2 USD on AliExpress.		The MAX30102 is a heart rate monitor and pulse oximeter biosensor. These modules cost about $2 USD on AliExpress.

			Using I2C, this has address 0x5A.

	===HC-SR501 Infrared Motion Sensor===		===HC-SR501 Infrared Motion Sensor===

Leo: /* MH-Z19 CO2 Sensor */

2020-07-26T22:47:26Z

MH-Z19 CO2 Sensor

← Older revision		Revision as of 22:47, 26 July 2020
Line 5:		Line 5:

	Interface: PWM or UART		Interface: PWM or UART

			See: [[MH-Z19 Carbon Dioxide Sensor]]

	===CCS811 Air Quality Sensor===		===CCS811 Air Quality Sensor===
Line 46:		Line 48:
	\|}		\|}

	=== MQ135 Air Quality Sensor ===		===MQ135 Air Quality Sensor===

	===DHT 11, DHT22===		===DHT 11, DHT22===

Leo at 22:46, 26 July 2020

2020-07-26T22:46:34Z

← Older revision		Revision as of 22:46, 26 July 2020
Line 104:		Line 104:
	===HC-SR501 Infrared Motion Sensor===		===HC-SR501 Infrared Motion Sensor===
	The SR501 is an infrared motion sensor. They cost around $1.5 USD each. It has 2 potentiometers that are used to adjust the detection sensitivity and duration of the signal. The middle output pin gives a 3.3V signal when motion is detected and resets back to ground after a period of time.		The SR501 is an infrared motion sensor. They cost around $1.5 USD each. It has 2 potentiometers that are used to adjust the detection sensitivity and duration of the signal. The middle output pin gives a 3.3V signal when motion is detected and resets back to ground after a period of time.


			{{Navbox Tinkering}}
			[[Category:Tinkering]]

Leo: /* MH-Z19 CO2 Sensor */

2020-07-26T22:20:55Z

MH-Z19 CO2 Sensor

← Older revision		Revision as of 22:20, 26 July 2020
Line 1:		Line 1:
	This is a list of sensors and their related information.		This is a list of sensors and their related information.

	=== MH-Z19 CO2 Sensor ===		===MH-Z19 CO2 Sensor===
	These CO2 modules cost about $17 USD. They come in 3 models: 0-2000PPM, 0-5000PPM, and 0-10000PPM.		These CO2 modules cost about $17 USD. They come in 3 models: 0-2000PPM, 0-5000PPM, and 0-10000PPM.

	Interface: PWM or UART		Interface: PWM or UART

	=== CCS811 ~~CO2~~ Sensor ===		===CCS811 Air Quality Sensor===
	MQ135 Air Quality Sensor		The CCS811 air quality sensor can measure Volatile Organic Compounds (VOCs). These cost about $8 USD.
			{\| class="wikitable"
			\|'''Pin Number'''
			\|'''Pin Name'''
			\|'''Description'''
			\|-
			\|1
			\|VCC
			\|Power supply for the module can typically 3.3V is used
			\|-
			\|2
			\|GND
			\|Ground of the module, connected to ground of the circuit
			\|-
			\|3
			\|SCL
			\|Serial Clock Line, used to provide clock pulse for I2C communication
			\|-
			\|4
			\|SDA
			\|Serial Data Address, used to transfer the data through I2C communication
			\|-
			\|5
			\|WAK
			\|Wake (active low)
			\|-
			\|6
			\|INT
			\|Interrupt (active low)
			\|-
			\|7
			\|RST
			\|Reset (active low)
			\|-
			\|8
			\|ADD
			\|Single address select bit to allow alternate address to be selected
			\|}

			=== MQ135 Air Quality Sensor ===

	=== DHT 11, DHT22 ===		===DHT 11, DHT22===
	The DHT11 is a digital temperature and humidity sensor. They are notable by their blue perforated plastic package. The DHT11 is created by Aosong Guangzhou Electronics Co. Ltd. Each unit costs around $1.5 USD.		The DHT11 is a digital temperature and humidity sensor. They are notable by their blue perforated plastic package. The DHT11 is created by Aosong Guangzhou Electronics Co. Ltd. Each unit costs around $1.5 USD.

Line 57:		Line 96:
	\|}		\|}

	=== BMP085, BMP180, BMP280 ===		===BMP085, BMP180, BMP280===
	These BMPs are atmospheric pressure sensors. They use I2C or SPI. The BMP280 appears to have superseded and are readily available on Ebay for around $0.50 and $1 USD each.		These BMPs are atmospheric pressure sensors. They use I2C or SPI. The BMP280 appears to have superseded and are readily available on Ebay for around $0.50 and $1 USD each.

	=== MAX30102 ===		===MAX30102===
	The MAX30102 is a heart rate monitor and pulse oximeter biosensor. These modules cost about $2 USD on AliExpress.		The MAX30102 is a heart rate monitor and pulse oximeter biosensor. These modules cost about $2 USD on AliExpress.

	=== HC-SR501 Infrared Motion Sensor ===		===HC-SR501 Infrared Motion Sensor===
	The SR501 is an infrared motion sensor. They cost around $1.5 USD each. It has 2 potentiometers that are used to adjust the detection sensitivity and duration of the signal. The middle output pin gives a 3.3V signal when motion is detected and resets back to ground after a period of time.		The SR501 is an infrared motion sensor. They cost around $1.5 USD each. It has 2 potentiometers that are used to adjust the detection sensitivity and duration of the signal. The middle output pin gives a 3.3V signal when motion is detected and resets back to ground after a period of time.

Leo: Created page with "This is a list of sensors and their related information. === MH-Z19 CO2 Sensor === These CO2 modules cost about $17 USD. They come in 3 models: 0-2000PPM, 0-5000PPM, and 0-10..."

2020-07-26T21:24:48Z

Created page with "This is a list of sensors and their related information. === MH-Z19 CO2 Sensor === These CO2 modules cost about $17 USD. They come in 3 models: 0-2000PPM, 0-5000PPM, and 0-10..."

New page

This is a list of sensors and their related information.

=== MH-Z19 CO2 Sensor ===
These CO2 modules cost about $17 USD. They come in 3 models: 0-2000PPM, 0-5000PPM, and 0-10000PPM.

Interface: PWM or UART

=== CCS811 CO2 Sensor ===
MQ135 Air Quality Sensor

=== DHT 11, DHT22 ===
The DHT11 is a digital temperature and humidity sensor. They are notable by their blue perforated plastic package. The DHT11 is created by Aosong Guangzhou Electronics Co. Ltd. Each unit costs around $1.5 USD.

The DHT22, also called AM2302, RHT03, is similar to the DHT11 but offers a slightly wider operating temperature range and higher temperature and humidity resolution. The DHT22 is slightly more expensive at around $3 USD per unit.

The difference between the two modules are outlined in the table below.
{| class="wikitable"
|
|'''DHT11'''
|'''DHT22'''
|-
|Relative Humidity Operating Range
|20 ~ 90%
|0 ~ 100%
|-
|Relative Humidity Accuracy
|±5%RH
|±2%RH (Max ±5%RH)
|-
|Humidity Resolution
|1%RH
|0.1%RH
|-
|Humidity Repeatability
|±1%RH
|±1%RH
|-
|Humidity Hysteresis
|±1%RH
|±0.3%RH
|-
|Long-term Stability
|±1%RH/year
|±0.5%RH/year
|-
|Temperature Operating Range
|0 ~ 50°C
|<nowiki>-40 ~ 80°C</nowiki>
|-
|Temperature Accuracy
|±2°C
|±0.5°C
|-
|Temperature Resolution
|1°C
|0.1°C
|}

=== BMP085, BMP180, BMP280 ===
These BMPs are atmospheric pressure sensors. They use I2C or SPI. The BMP280 appears to have superseded and are readily available on Ebay for around $0.50 and $1 USD each.

=== MAX30102 ===
The MAX30102 is a heart rate monitor and pulse oximeter biosensor. These modules cost about $2 USD on AliExpress.

=== HC-SR501 Infrared Motion Sensor ===
The SR501 is an infrared motion sensor. They cost around $1.5 USD each. It has 2 potentiometers that are used to adjust the detection sensitivity and duration of the signal. The middle output pin gives a 3.3V signal when motion is detected and resets back to ground after a period of time.