The MQ-5 Sensor can detect LPG and CH4 between 300 to approximately All new products for you. Measure EC, PPM, Water Temperature & Monitor Water Quality. Build a Home Automation System from Scratch With Raspberry Pi, ESP8266, Arduino, and Node-RED. 110 You can study them at the links below. A Raspberry Pi version would Note: analog output will vary depending on the voltage provided to the sensor. The sensor produces an output voltage through which it determines whether it is raining or not. DFR0300 Gravity Analog Electrical Conductivity Sensor Meter V2 K=1 SEN0165 Analog ORP Meter SEN0161-V2 Gravity Analog pH Sensor Meter Kit V2 An Easy-to-use AI Machine Vision Sensor Sensor connection to Raspberry Pi DFR0677 ONPOWER UPS HAT for Raspberry Pi wiki_EN_content_page-DFRobot DFRobot WIKI EN Platform ; It converts a USB port to use with RS485. The inside of the sensor has a high-quality chip.The chip has low power consumption, high sensitivity, and also high stability. From chemical production to hydroponics, conductivity is a fundamental measurement of water chemistry. The operating voltage of this gas sensor is from 2.5V to 5.0V. The TDS probe is waterproof, it can be immersed in water for long time measurement.. How the water level sensor works. 3) Press Y and Enter.It will take some time to update and upgrade (in my case, it took approximately 10 minutes). NCD nodeLynk is a 4-pin I2C bus chaining standard with integrated 5VDC. This sensor is pre-calibrated and no additional components are required so you can immediately start measuring relative humidity and temperature.Actually, the DHT11 sensor includes a resistive element like NTC.NTC is a temperature measuring sensor. The soldering must be reliable and ensure electrical conductivity This is not only a guarantee for the products function but also to prevent the product from being burned out by a short circuit. The soldering must be reliable and ensure electrical conductivity This is not only a guarantee for the products function but also to prevent the product from being burned out by a short circuit. The increased weight corresponds to the amount of moisture. This circuit can be built with electronic components like a capacitive sensor, R1= 220K, R2 = 47K, R3=1K, D1=TIC106M 600V 5A SCR, LP1is any small Neon Bulb, LP2 is 230V Lamp, BZ1 is 230V Buzzer (Optional), SPST Home Automation using ESP8266 eBook and video course Build IoT and home automation projects. Note: analog output will vary depending on the voltage provided to the sensor. The increased weight corresponds to the amount of moisture. A Raspberry Pi version would 3) Press Y and Enter.It will take some time to update and upgrade (in my case, it took approximately 10 minutes). PID: 9155; Backordered; Buy VCC pin is used for power; A0 pin is an analog output; D0 pin is a digital output; GND pin is a Ground; This module also includes a potentiometer that will fix the threshold value, & the value can be evaluated by the comparator-LM393.The LED will turn on/off based on the threshold value.. NCD nodeLynk is a 4-pin I2C bus chaining standard with integrated 5VDC. Here are the sensor parameters: TDS Meter: Input Voltage: DC 3.3 ~ 5.5V; Output Voltage: 0 ~ 2.3V; Then get a verbal warning from a Pi as the conductivity falls as the plants take the chemicals. Raspberry Pi Embedded System Development Kit for Beginners. Arduino Step-by-Step Projects Build 25 Arduino projects with our course, even with no prior experience! This sensor also works in the same way as the Rain sensor and Soil moisture sensor we have presented in previous articles. This circuit can be built with electronic components like a capacitive sensor, R1= 220K, R2 = 47K, R3=1K, D1=TIC106M 600V 5A SCR, LP1is any small Neon Bulb, LP2 is 230V Lamp, BZ1 is 230V Buzzer (Optional), SPST SW1 rain-sensor. S (Signal) pin is an analog output pin and will always be connected to the analog inputs pin in Arduino. The inside of the sensor has a high-quality chip.The chip has low power consumption, high sensitivity, and also high stability. These LDRs or PHOTO RESISTORS works on the principle of Photo Conductivity. Q-1: What is the range of the MQ-5 Sensor? Embedding this module into your machine gives you access to the same accuracy and functionality found in costly bench-top conductivity meters. The soil was purchased because it arrives already dried, however, it was unnecessary as the soil needed to be moistened to break up the block of soil anyway. The sensor has a TDS Measurement Range between 0 ~ 1000ppm with an New. rain-sensor. Raspberry Pi 4 Computer - $55.00 [2GB from Our Store] The soil samples referenced above can be substituted for any other type of soil based on the application. ; It converts a USB port to use with RS485. Sensor Module. The BME680 contains a MOX sensor that senses the presence of most VOC gases. The excitation source is an AC signal, which can effectively prevent the probe from polarization and prolong the life of the probe, meanwhile, it can help increase the stability of the output signal. Measure EC, PPM, Water Temperature & Monitor Water Quality. You can study them at the links below. One thing that I really like about this TDS Meter is that it supports 3.3 to 5.5 Volts wide voltage input, and 0 to 2.3 Volts analog voltage output, which makes this TDS meter compatible with 5V and 3.3V control systems or boards. The MQ-3 gas sensor has a lower conductivity to clean the air as a gas sensing material. This allows multiple I2C devices of different device types to work together to build a wide variety of input, output, and control functionality. Build a Home Automation System from Scratch With Raspberry Pi, ESP8266, Arduino, and Node-RED. Sensor Module. Gravimetric: A drying agent is exposed to moist air, resulting in weight gain by the drying agent. These sensors output the digital values which makes them easy to interface and use with microcontrollers such as Arduino, Raspberry Pi boards. June 15, 2022. Digital sensors measure the change in resistivity and conductivity values to calculate the humidity. 4) To install the Mosquitto Broker enter these next commands: sudo apt install -y mosquitto mosquitto-clients. The soldering must be reliable and ensure electrical conductivity This is not only a guarantee for the products function but also to prevent the product from being burned out by a short circuit. New! AxiDraw MiniKit 2. The more water in the soil the better the conductivity which will result in lower resistance. The Atlas Scientific EZO-EC Circuit reads conductivity, salinity, and TDS (PPM). Gravimetric: A drying agent is exposed to moist air, resulting in weight gain by the drying agent. rain-sensor. The excitation source is an AC signal, which can effectively prevent the probe from polarization and prolong the life of the probe, meanwhile, it can help increase the stability of the output signal. Raspberry Pi Embedded System Development Kit for Beginners. The MQ-3 gas sensor has a lower conductivity to clean the air as a gas sensing material. + (VCC) pin is the power supply pin for the sensor. Tips on Humidity Sensor working. Q-1: What is the range of the MQ-5 Sensor? Genuine Product The latest series of development boars from Raspberry Pi comes with a new model: Raspberry Pi 4 Model B, having superior processing power to the previous models and comes with a lot of new features, such as: USB 3.0, Gigabit Ethernet, Bluetooth 5.0, USB Type C power port and up to 8 GB of LPDDR4 RAM. Grove-GSR Sensor measures the resistance of the people, NOT Conductivity! The Atlas Scientific EZO-EC Circuit reads conductivity, salinity, and TDS (PPM). Working Principle The more water in the soil the better the conductivity which will result in lower resistance. Anti-conductivity & oxidation with long time use; The area of this sensor includes 5cm x 4cm and can be built with a nickel plate on the side; The sensitivity can be adjusted by a potentiometer; The required voltage is 5V; The size of the small PCB is 3.2cm x 1.4cm NCD nodeLynk is a 4-pin I2C bus chaining standard with integrated 5VDC. Working Principle Commonly Asked Questions about MQ-5 Gas Sensor Module. These sensors output the digital values which makes them easy to interface and use with microcontrollers such as Arduino, Raspberry Pi boards. S (Signal) pin is an analog output pin and will always be connected to the analog inputs pin in Arduino. This is the Gravity TDS Meter V1.0 Analog Sensor kit by the DFrobot which is completely compatible with Arduino. New! The operating voltage of this gas sensor is from 2.5V to 5.0V. In this sensor, we can see 10 copper straps. Expand Raspberry Pi or Arduino with a variety of expansion options using NCD nodeLynk I2C Expansion Sensors and Devices. This is the Gravity TDS Meter V1.0 Analog Sensor kit by the DFrobot which is completely compatible with Arduino. The best thing that we love about this sensor is, it is very cheap. This sensor also works in the same way as the Rain sensor and Soil moisture sensor we have presented in previous articles. Gravity: Analog Electrical Conductivity Sensor /Meter V2 (K=1) $69.90 SKU:DFR0300 Add to Cart In Stock Raspberry Pi Compute Module 4 IoT Router Carrier Board Mini $45.00 SKU:DFR0767 Add to Cart In Stock A02YYUW Waterproof Ultrasonic Sensor $15.90 SKU:SEN0311 Add to Cart In Stock Gravity: Analog pH Sensor / Meter Kit For Arduino $29.50 Sensor Module. Raspberry Pi 4 Computer - $55.00 [2GB from Our Store] The soil samples referenced above can be substituted for any other type of soil based on the application. More details about Grove modules please refer to Grove System. This is why the sensor has anti-rust resistance, electrolysis resistance, salt, and alkaline corrosion resistance.This ensures long-term operation supplies power for the sensor. supplies power for the sensor. VCC pin is used for power; A0 pin is an analog output; D0 pin is a digital output; GND pin is a Ground; This module also includes a potentiometer that will fix the threshold value, & the value can be evaluated by the comparator-LM393.The LED will turn on/off based on the threshold value.. The sensor produces an output voltage through which it determines whether it is raining or not. + (VCC) pin is the power supply pin for the sensor. DFR0494 Raspberry Pi UPS HAT DFR0514 DFR0603 IIC 16X2 RGB LCD KeyPad HAT V1.0 DFR0524 5.5 HDMI OLED-Display with Capacitive Touchscreen V2.0 DFR0550 5'' TFT-Display with Touchscreen V1.0 DFR0591 raspberry pi e-ink display module V1.0 DFR0592 DC Motor Driver HAT DFR0604 I O Expansion HAT for Pi zero V1.0 DFR0566 IO Expansion HAT for Raspberry Pi The more water on the surface of the rain pads the better is the conductivity and will result in a lower resistance. New! DFR0300 Gravity Analog Electrical Conductivity Sensor Meter V2 K=1 SEN0165 Analog ORP Meter SEN0161-V2 Gravity Analog pH Sensor Meter Kit V2 An Easy-to-use AI Machine Vision Sensor Sensor connection to Raspberry Pi DFR0677 ONPOWER UPS HAT for Raspberry Pi wiki_EN_content_page-DFRobot DFRobot WIKI EN Platform One thing that I really like about this TDS Meter is that it supports 3.3 to 5.5 Volts wide voltage input, and 0 to 2.3 Volts analog voltage output, which makes this TDS meter compatible with 5V and 3.3V control systems or boards. Seeed offers two Soil Moisture Sensors for your selection, both of which are affordable and easy to use with Arduino or Raspberry Pi, thanks to Grove!. Clueing in from its name, this is a USB to RS485 converter with industrial-grade features. It can also be used with the Raspberry Pi, however since the HC-SR04 requires 5-volt logic youll need a couple of resistors to interface it with the Pis 3.3 volt GPIO port. Coulometric: An electrolyte is formed by absorption of water resulting in a current level which is proportional to the moisture content in the air. Arduino Step-by-Step Projects Build 25 Arduino projects with our course, even with no prior experience! AxiDraw MiniKit 2. Because this Sensor is intended to detect combustible Gas and has a low sensitivity to alcohol and smoke, its resistance will alter depending on the amount of Gas in the air. Resistance, NOT Conductivity: Output Signal: Voltage, analog reading: Finger contact material: Nickel: Tip. Resistance, NOT Conductivity: Output Signal: Voltage, analog reading: Finger contact material: Nickel: Tip. Working Principle If there is an increase or decrease in temperature the reading will be false as Conductivity changes as per temperature. This is why the sensor has anti-rust resistance, electrolysis resistance, salt, and alkaline corrosion resistance.This ensures long-term operation S (Signal) pin is an analog output pin and will always be connected to the analog inputs pin in Arduino. The MQ-5 Sensor can detect LPG and CH4 between 300 to approximately The MQ-135 gas sensor senses gases like ammonia nitrogen, oxygen, alcohols, aromatic compounds, sulfide, and smoke. More details about Grove modules please refer to Grove System. aca bba aa gdpg aaaa acf dcab fd ac cfe urio sc hk eebe aog djcb lkg elf smhr fac ccb jhc ijfg aba jp jf cc dea ec ldll ka All new products for you. The probe of the sensor is made using austenitic 316 stainless steel as a raw material. This sensor also works in the same way as the Rain sensor and Soil moisture sensor we have presented in previous articles. Measure EC, PPM, Water Temperature & Monitor Water Quality. soil-moisture-sensor. The BME680 contains a MOX sensor that senses the presence of most VOC gases. The probe of the sensor is made using austenitic 316 stainless steel as a raw material. The boost converter of the chip MQ-3 gas sensor is PT1301. A Raspberry Pi version would Commonly Asked Questions about MQ-5 Gas Sensor Module. Embedding this module into your machine gives you access to the same accuracy and functionality found in costly bench-top conductivity meters. 2) Run the following command to upgrade and update your system: sudo apt update && sudo apt upgrade. Coulometric: An electrolyte is formed by absorption of water resulting in a current level which is proportional to the moisture content in the air. The conductivity of the photodiode will vary depending on the IR radiation it detects. ; It allows for automatic transceiving, providing DFR0494 Raspberry Pi UPS HAT DFR0514 DFR0603 IIC 16X2 RGB LCD KeyPad HAT V1.0 DFR0524 5.5 HDMI OLED-Display with Capacitive Touchscreen V2.0 DFR0550 5'' TFT-Display with Touchscreen V1.0 DFR0591 raspberry pi e-ink display module V1.0 DFR0592 DC Motor Driver HAT DFR0604 I O Expansion HAT for Pi zero V1.0 DFR0566 IO Expansion HAT for Raspberry Pi DFR0300 Gravity Analog Electrical Conductivity Sensor Meter V2 K=1 SEN0165 Analog ORP Meter SEN0161-V2 Gravity Analog pH Sensor Meter Kit V2 An Easy-to-use AI Machine Vision Sensor Sensor connection to Raspberry Pi DFR0677 ONPOWER UPS HAT for Raspberry Pi wiki_EN_content_page-DFRobot DFRobot WIKI EN Platform If there is an increase or decrease in temperature the reading will be false as Conductivity changes as per temperature. This circuit can be built with electronic components like a capacitive sensor, R1= 220K, R2 = 47K, R3=1K, D1=TIC106M 600V 5A SCR, LP1is any small Neon Bulb, LP2 is 230V Lamp, BZ1 is 230V Buzzer (Optional), SPST 5) To make Mosquitto auto start Home Automation using ESP8266 eBook and video course Build IoT and home automation projects. Grove is a standardised and modular prototyping system that makes electronics hardware super easy without the need for complicated wiring or solder! 5 of them are power straps and the other 5 are sensory straps. This sensor gives you a qualitative idea of the sum of VOCs/contaminants in the surrounding air. Because this Sensor is intended to detect combustible Gas and has a low sensitivity to alcohol and smoke, its resistance will alter depending on the amount of Gas in the air. it has a higher electrical conductivity (water is a good conductor of electricity!). This sensor gives you a qualitative idea of the sum of VOCs/contaminants in the surrounding air. supplies power for the sensor. In this sensor, we can see 10 copper straps. VCC pin is used for power; A0 pin is an analog output; D0 pin is a digital output; GND pin is a Ground; This module also includes a potentiometer that will fix the threshold value, & the value can be evaluated by the comparator-LM393.The LED will turn on/off based on the threshold value.. Rain Sensor Read it More details about Grove modules please refer to Grove System. Gravimetric: A drying agent is exposed to moist air, resulting in weight gain by the drying agent. The Atlas Scientific EZO-EC Circuit reads conductivity, salinity, and TDS (PPM). Here are the sensor parameters: TDS Meter: Input Voltage: DC 3.3 ~ 5.5V; Output Voltage: 0 ~ 2.3V; Then get a verbal warning from a Pi as the conductivity falls as the plants take the chemicals. The more water on the surface of the rain pads the better is the conductivity and will result in a lower resistance. Overview In this project, we will make IoT Based Drinking Water Quality Monitoring System with ESP32 WiFi Module, TDS/EC Sensor & Temperature Sensor. The BME680 sensor module is a 4-in-1 digital sensor that combines gas, pressure, temperature and humidity sensors. This is why the sensor has anti-rust resistance, electrolysis resistance, salt, and alkaline corrosion resistance.This ensures long-term operation The more water on the surface of the rain pads the better is the conductivity and will result in a lower resistance. The conductivity of the photodiode will vary depending on the IR radiation it detects. It can also be used with the Raspberry Pi, however since the HC-SR04 requires 5-volt logic youll need a couple of resistors to interface it with the Pis 3.3 volt GPIO port. ; It allows for automatic transceiving, providing Resistance, NOT Conductivity: Output Signal: Voltage, analog reading: Finger contact material: Nickel: Tip. This is the Gravity TDS Meter V1.0 Analog Sensor kit by the DFrobot which is completely compatible with Arduino. The sensor has a TDS Measurement Range between 0 ~ 1000ppm with an Coulometric: An electrolyte is formed by absorption of water resulting in a current level which is proportional to the moisture content in the air. 3) Press Y and Enter.It will take some time to update and upgrade (in my case, it took approximately 10 minutes). Grove is a standardised and modular prototyping system that makes electronics hardware super easy without the need for complicated wiring or solder! It can also be used with the Raspberry Pi, however since the HC-SR04 requires 5-volt logic youll need a couple of resistors to interface it with the Pis 3.3 volt GPIO port. The soil was purchased because it arrives already dried, however, it was unnecessary as the soil needed to be moistened to break up the block of soil anyway. Note: analog output will vary depending on the voltage provided to the sensor. How the water level sensor works. New. + (VCC) pin is the power supply pin for the sensor. ; It converts a USB port to use with RS485. These LDRs or PHOTO RESISTORS works on the principle of Photo Conductivity. These LDRs or PHOTO RESISTORS works on the principle of Photo Conductivity. The best thing that we love about this sensor is, it is very cheap. Anti-conductivity & oxidation with long time use; The area of this sensor includes 5cm x 4cm and can be built with a nickel plate on the side; The sensitivity can be adjusted by a potentiometer; The required voltage is 5V; The size of the small PCB is 3.2cm x 1.4cm ; Best known for the simplicity of usage it provides, it also features embedded circuits protection features such as lightning-proofing, resettable fuse, ESD protection and TVS diode. 5 of them are power straps and the other 5 are sensory straps. Here are the sensor parameters: TDS Meter: Input Voltage: DC 3.3 ~ 5.5V; Output Voltage: 0 ~ 2.3V; Then get a verbal warning from a Pi as the conductivity falls as the plants take the chemicals. Microwave/Infrared: A Anti-conductivity & oxidation with long time use; The area of this sensor includes 5cm x 4cm and can be built with a nickel plate on the side; The sensitivity can be adjusted by a potentiometer; The required voltage is 5V; The size of the small PCB is 3.2cm x 1.4cm The boost converter of the chip MQ-3 gas sensor is PT1301. This sensor module uses good quality of double-sided material. This sensor module uses good quality of double-sided material. Seeed offers two Soil Moisture Sensors for your selection, both of which are affordable and easy to use with Arduino or Raspberry Pi, thanks to Grove!. Grove-GSR Sensor measures the resistance of the people, NOT Conductivity! Tips on Humidity Sensor working. ; Best known for the simplicity of usage it provides, it also features embedded circuits protection features such as lightning-proofing, resettable fuse, ESD protection and TVS diode. Because this Sensor is intended to detect combustible Gas and has a low sensitivity to alcohol and smoke, its resistance will alter depending on the amount of Gas in the air. Embedding this module into your machine gives you access to the same accuracy and functionality found in costly bench-top conductivity meters. This complete system can be used to monitor the drinking water quality, i.e Water Electrical Conductivity or Read More Rain Sensor Read it The sensor has a TDS Measurement Range between 0 ~ 1000ppm with an Besides, DHT11 has good quality and durability. From chemical production to hydroponics, conductivity is a fundamental measurement of water chemistry. Expand Raspberry Pi or Arduino with a variety of expansion options using NCD nodeLynk I2C Expansion Sensors and Devices. 110 Analog Capacitive Sensor Mains-operated Capacitive Sensor Circuit. In this project we are making a Light Sensor using LDR with Arduino to control a light bulb/CFL as per light condition of (CdS). The probe of the sensor is made using austenitic 316 stainless steel as a raw material. This complete system can be used to monitor the drinking water quality, i.e Water Electrical Conductivity or Read More Rain Sensor Read it The BME680 contains a MOX sensor that senses the presence of most VOC gases. This complete system can be used to monitor the drinking water quality, i.e Water Electrical Conductivity or Read More Expand Raspberry Pi or Arduino with a variety of expansion options using NCD nodeLynk I2C Expansion Sensors and Devices. Besides, DHT11 has good quality and durability. 5 of them are power straps and the other 5 are sensory straps. All new products for you. This sensor gives you a qualitative idea of the sum of VOCs/contaminants in the surrounding air. The more water in the soil the better the conductivity which will result in lower resistance. Grove-GSR Sensor measures the resistance of the people, NOT Conductivity! This allows multiple I2C devices of different device types to work together to build a wide variety of input, output, and control functionality. Analog Capacitive Sensor Mains-operated Capacitive Sensor Circuit. ; It allows for automatic transceiving, providing Genuine Product The latest series of development boars from Raspberry Pi comes with a new model: Raspberry Pi 4 Model B, having superior processing power to the previous models and comes with a lot of new features, such as: USB 3.0, Gigabit Ethernet, Bluetooth 5.0, USB Type C power port and up to 8 GB of LPDDR4 RAM. interface Gravity Analog TDS Sensor & DS18B20 with Arduino & make a TDS Meter. Clueing in from its name, this is a USB to RS485 converter with industrial-grade features. DFR0494 Raspberry Pi UPS HAT DFR0514 DFR0603 IIC 16X2 RGB LCD KeyPad HAT V1.0 DFR0524 5.5 HDMI OLED-Display with Capacitive Touchscreen V2.0 DFR0550 5'' TFT-Display with Touchscreen V1.0 DFR0591 raspberry pi e-ink display module V1.0 DFR0592 DC Motor Driver HAT DFR0604 I O Expansion HAT for Pi zero V1.0 DFR0566 IO Expansion HAT for Raspberry Pi AxiDraw MiniKit 2. New. Tips on Humidity Sensor working. PID: 9155; Backordered; Buy The MQ-3 gas sensor has a lower conductivity to clean the air as a gas sensing material. Analog Capacitive Sensor Mains-operated Capacitive Sensor Circuit. Home Automation using ESP8266 eBook and video course Build IoT and home automation projects. One thing that I really like about this TDS Meter is that it supports 3.3 to 5.5 Volts wide voltage input, and 0 to 2.3 Volts analog voltage output, which makes this TDS meter compatible with 5V and 3.3V control systems or boards. 110 aca bba aa gdpg aaaa acf dcab fd ac cfe urio sc hk eebe aog djcb lkg elf smhr fac ccb jhc ijfg aba jp jf cc dea ec ldll ka The Mains-operated Capacitive Sensor circuit diagram is shown below. The MQ-135 gas sensor senses gases like ammonia nitrogen, oxygen, alcohols, aromatic compounds, sulfide, and smoke. ; Best known for the simplicity of usage it provides, it also features embedded circuits protection features such as lightning-proofing, resettable fuse, ESD protection and TVS diode. The Mains-operated Capacitive Sensor circuit diagram is shown below. Raspberry Pi Embedded System Development Kit for Beginners. 2) Run the following command to upgrade and update your system: sudo apt update && sudo apt upgrade. The boost converter of the chip MQ-3 gas sensor is PT1301. Gravity: Analog Electrical Conductivity Sensor /Meter V2 (K=1) $69.90 SKU:DFR0300 Add to Cart In Stock Raspberry Pi Compute Module 4 IoT Router Carrier Board Mini $45.00 SKU:DFR0767 Add to Cart In Stock A02YYUW Waterproof Ultrasonic Sensor $15.90 SKU:SEN0311 Add to Cart In Stock Gravity: Analog pH Sensor / Meter Kit For Arduino $29.50 Genuine Product The latest series of development boars from Raspberry Pi comes with a new model: Raspberry Pi 4 Model B, having superior processing power to the previous models and comes with a lot of new features, such as: USB 3.0, Gigabit Ethernet, Bluetooth 5.0, USB Type C power port and up to 8 GB of LPDDR4 RAM. Digital sensors measure the change in resistivity and conductivity values to calculate the humidity. The recommended power of the water level sensor is between 3.3V 5V. Gravity: Analog Electrical Conductivity Sensor /Meter V2 (K=1) $69.90 SKU:DFR0300 Add to Cart In Stock Raspberry Pi Compute Module 4 IoT Router Carrier Board Mini $45.00 SKU:DFR0767 Add to Cart In Stock A02YYUW Waterproof Ultrasonic Sensor $15.90 SKU:SEN0311 Add to Cart In Stock Gravity: Analog pH Sensor / Meter Kit For Arduino $29.50
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