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This is a summary of the soil moisture sensor that can be used to detect moisture, when the soil is dry, the module outputs a high level. Use this sensor to build an automatic watering system.
Specifications:
Operating voltage: 3.3V~5V.
Adjustable sensitivity (blue digital potentiometer adjustment)
Dual output mode,analog output more accurate.
A fixed bolt hole for easy installation.
Power indicator (red) and digital switching output indicator (green).
LM393 comparator chip, stable.
PCB Dimension: 3cm x 1.5cm.
Soil Probe Dimension: 6cm x 2cm.
Cable Length: 21cm.
VCC: 3.3V-5V.
GND: GND.
DO: digital output interface (0 and 1).
AO: analog output interface.
Setup with Raspberry Pi
Package Includes:
1 x Soil moisture detector module
1 x Probe
5 x Jumper Cables
Use the USB Charger Doctor to measure the working voltage and current output for any USB port and project. This plastic dongle plugs between a USB device, and passes the data lines through. There's a 0.05 ohm resistor in line with the power pin that is used to measure current draw. The Doctor's digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones.
You can use this device from 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It displays both voltage and current readouts. It's a very handy tool for testing USB devices, checking load levels and debugging battery chargers and boost converters.
Specifications:
Voltage range: 3.3V-9V
Current range: 0-3A
Voltage display: red
Current display: blue
Out put : 2 USB
Size: 52mm x 34mm x12mm
Weight: 16g
Shell color: Dark black
What's in the box?:
1 x Voltage Tester Dual USB
Using a simple voltage divider network, concentrations of gas can be detected. MQ2 Gas sensor works on 5V DC and draws around 800mW.
Give your next microcontroler project a nose for gasses with the MQ2 Gas Sensor Module. This is a robust Gas sensor suitable for sensing LPG, Smoke, Alcohol, Propane, Hydrogen, Methane and Carbon Monoxide concentrations in the air. If you are planning on creating an indoor air quality monitoring system; breath checker or early fire detection system, MQ2 Gas Sensor Module is a great choice.
Features:
1. Using high-quality dual-panel design, with power indicator and TTL signal output instructions
2. there are four screw holes for easy positioning
3. Analog output voltage with the higher concentration of higher voltage
4. TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the microcontroller or relay module)
5. The switching signal having a DO (TTL) output and analog output AO
Special note:
After the sensor is powered, wait about 20S until measured data becomes stable.
Heat in the sensor is a normal phenomenon due to the internal heating wire.
Specifications:
Size: 32mmX22mmX27mm
Chip: LM393, ZYMQ-2 gas sensors
Working voltage: DC 5V
AO output :0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
DO output: TTL digital 0 and 1 (0.1 and 5V)
Input voltage: DC 5V 150mA
Package Includes:
1 x MQ-2 Gas Sensor Module
Resources:
Getting started with MQ-x
Analog to Digital converter not included
The item is for use as a rain sensor, monitoring can be used for a variety of weather conditions, and converted into the number of the reference signal and the AO output.
The sensor uses FR-04 high-quality double-sided material, King Size 5.0 * 4.0CM, and with a surface of nickel plating treatment against oxidation for superior performance and longevity;
The output is in the form of digital switching outputs (0 and 1) and analog AO voltage output;Sensitivity can be adjusted via the potentiometerLED lights up when there is no rain, output is high.
Specifications:
Small board PCB size: 32mm x 14mm
Operating voltage: 3.3V-5V
How to use:
Connected to 5V power supply, the power indicator will light up.
With no water droplets, DO output is high, LED turns off.
Dropping on a drop of water, DO output is low, the indicator light switch on,Brush off the the above water droplets, has returned to output high state. . . .
Connection mode:
1, VCC: positive power supply (3-5V)
2, GND: negative one.
3, DO: TTL switching signal output
4, AO: Analog signal output
Package includes:
1 x Rain sensing board
1 x Control board
5 x 20cm Dupont Line
Resources:
Magpi example
Are you interested in saving energy? These new Recessed PIR motion/ occupancy sensor is perfect way to start saving energy and also on your bills.
Specifications:
Voltage:AC220-240V/50Hz
Load:800W (incandescent bulbs, halogen bulbs)/200W ( energy saving lamp, fluorescent lamp, LED bulb)
Detection Angle: Ceiling Installation 360°/Wall Mounted 140°
Sensing Distance: Max 8M (24°C) Adjustable Distance
Delay Time: 5S, 30S, 1Min, 3 Min, 5 Min, 8 Min Time Adjustable
Light Control Settings: 10 ~ 2000Lux Light Control Adjustable
Package Includes:
1 X PIR Ceiling Light Switch
Based on the AMS reference design, this is a breakout board for the AS3935 digital lightning sensor. With a specially tuned antenna, SPI or I2C interfacing and a wide 2.4V to 5.5V standard operating range, this innovative sensor is designed to interface with most current development systems and boards. This includes all of the current Arduino modules!
The AS3935 Franklin Lightning Detector gives you lightning detection for your next weather project. This sensor is capable of detecting lightning up to 40 km away with an accuracy of 1km to the storm front! On the product is a sensitive antenna tuned to pick up lightning events in the 500kHz band. When sensing an event the AS3935 utilizes an interrupt to the interrupt pin, distinguishes between false and real lightning events, and has a number of features to help calibrate lightning detection. For example, there are settings for detecting from indoors or detecting from outdoors, settings to change the threshold for false events, and settings to be alerted only after a certain number of lightning strikes to name a few. We've also written an Arduino Library to get you prepared for that upcoming storm!
The product is capable of communicating over SPI or I2C and sports a Qwiic connector for fast implementation without the need for soldering.
Fully Calibrated Digital Lighting Sensor AS3935 Lighting Detector Breakout Board Module SPI I2C Interface Strikes Thunder Rainstorm Storm Distance Detection Compatible for Arduino RPi
Features:
- Wide Supply Voltage range : 2.4V - 5.5V
- Lightning Sensing: 40 km Range with accuracy of 1km in 14 steps
- Detects both cloud-to-ground and cloud-to-cloud flashes
- Embedded ‘man made’ disturbance rejection algorithm
- Programmable Detection Levels,Lightning detection thresholds are programmable (outdoor vs indoor, for example)
- Distance to storm estimation
- "Disturber" (false event) rejection algorithm
- Indoor and Outdoor Settings
- SPI and I2C Interfaces
- Qwiic Enabled
Applications:
DIY Weather stations
Everyone need a test pen to make sure if the line is clear from high voltage electricity, especially when you are working with AC (Alternating Current) line. This is alternative to test pen where it can detect AC voltage without touching the wire/contact itself :) And Yes! It works.
Get it near to your AC wire or plug (few millimeter) and if there is AC voltage, the LED will start to blink and the on board buzzer will also buzz. And there LED (another LED) activation push button if you need eatra helping light when you work :)
It is powered by 2 x AAA (1.5V) battery, not included in the package.
Specifications:
- Sensitivity Range: 90V-1000V AC 50-60Hz
- Voltage Indication: Beeper, LED Flashing
- Power Requirement: 2 AAA batteries (not included)
- Dimension: 160 x 17 x 18mm
- Auto power-off:Yes
- Low Battery Power Indication:Yes
Features:
- Wide Testing Range,within 90-1000V AC (Malaysia is 240VAC), All Electric Appliances in Your Family can be Tested by it.
- High Efficiency. As long as voltage is detected, the LED in the tester pen will illuminates. It is easy to notice. And this voltage pen detector is powered by 2 AAA batteries(not included).
- 100% Safe. The Voltage Pen Tester detects Voltage in a non-contact way, so do not worry about there could be any possibility of being shocked by the electricity.
- High Quality. Being a home electrician , you will do the job better with it.
- Easy to use. LED in the voltage tester pen can illuminate the working environment. You can use the Non Contact Voltage Detector in circuit breakers, lighting fixtures, switches, outlets, wires and anywhere you need it.
Whats in the box:
1 x Voltage Test Pen
Resources:
Pen Style Non Contact Alarm AC Voltage Detector with LED illumination (90V~1000V/2*AAA)
Note: This kit DOES NOT INCLUDE the AA batteries for you to get started without hassle.
Note: Download the softcopy instruction manual (English) here.
Images are for reference only
Description:
The DIY (Do It Yourself) Kit for Children Age 4 to 12 Years Old
Get this kit to keep your kids occupied with hands-on activities while enjoying the buzzing while keep your hand steady moving through the wire. This DIY kit is simple enough to be built by 4 years old children, with parent's help. And children 6 years old and above can build it by themself! Let's them explore the fundamental electric circuit. When the circuit is complete (touches the wires), the current will drive the load (in this case is the buzzer).
Your kids can always follow the video to build the robot or if you prefer the step by step guide in a document, we have also produced an instruction manual in English:
Note: Not suitable for children under 4 years old!
Features:
- Do It Yourself simple Buzz Wire Game for kids
- It can really buzz!
- Suitable for age 4 years old and above
- Come with everything needed to assemble as a working game
- Powered with two (2) AA-size batteries (not included in this kit)
- No soldering is needed
- Great family hands-on activity
Packing List:
- 1 x Connector Base
- 2 x Pink Straw
- 2 x Green connector
- 2 x Red LED
- 1 x 2xAA size battery holder with wires (Black and Red)
- 1 x Buzzer
- 1 x metal cable
- Some screws
- 1 x Heat Shrink Tube
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Resources:
- 1