CJMCU Plant Watering Alarm Humidity Moisture Sensor
SKU:
2347
In stock
Description:
plant watering alarm
Durable and practical
Top Sales Item
Plant Watering Alarm Sensor
This sensor will be silent when it?s dark and will restrict itself from making too much noise.
This is a plant watering alarm - as simple as that. You put it into the soil near a plant and it emits
a tiny chirp when the soil is dry, reminding you to water the plant. It uses capacitive humidity sensing
as opposed to resistive humidity sensing, this means, it does not make an electric contact with the soil,
avoiding electrode corrosion and soil electrolysis and resulting in better accuracy and longer battery life.
ST-Link V2 New stlink mini STM8STM32 STLINK programmer with cover
SKU:
2330
In stock
1. Support the full range of STM32 SWD interface debugging, simple interface (including
power supply), 4 line speed, stable work; Interface definition shell directly address!
Don't need to read instructions!
2. Support all series STM8 SWIM download debugging (common development environment such as
IAR, STVD etc.) are supported. Support the software version is as follows:
ST - LINK Utility 2.0 and above
STVD 2 and above
STVP 3.2.3 and above
IAR EWARM V6.20 and above
IAR EWSTM8 V1.30 and above
KEIL RVMDK V4.21 and above
3.Support the firmware upgrade automatically, to ensure that the ST company product
support. When they leave the firmware has been upgraded to the latest V2.J17.S4
W25Q64 64Mbit 8MByte Storage FLASH interface module SPI BV FV
SKU:
2325
In stock
I2C IIC 8 channel logic level converter module bi-arduino directional module upstream 3.3V to 5V module
SKU:
2322
In stock
If you've ever tried to connect a 3.3V device to a 5V system, you know how difficult it can be.
Bidirectional logic level converter is a small device that safely reduces signals
from 5 V to 3.3 V and increases 3.3 V to 5 V at the same time.
This level converter also works with 2.8V and 1.8V devices.
What really separates this logic level converter from our previous versions is
that you can configure your high and low voltages and increase and decrease between them
safely on the same channel Each level converter has the ability to convert 4 pins on
the high side to 4 pins on the low side with two inputs and two outputs provided for each side
TTGO T-BASE ESP8266 WIFI WIRELESS MODULE 4MB FLASH I2C FOR ARDUINO
SKU:
2297
In stock
LilyPad 328 Main Board ATmega328P ATmega328 16M For Arduino
SKU:
2290
In stock
- This is LilyPad - the main board consisting of an ATmega328 with the to 5V.
- The latest version of the LilyPad supports automatic reset for even easier programming.
- The back side of the LilyPad is now completely flat! We now use a surface mount programming
- connector to keep the header from poking through.
- This version of the LilyPad now uses the new ATmega328 at 8MHz. 0016 supports the Pro Mini 328/8MHz/16MHZ.
- Use this setting when using this new LilyPad 328.
- LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun.
RS485 to TTL Converter Module MAX485 Module
SKU:
2261
In stock
KY-003 Hall Effect Magnetic Sensor Module For Arduino PIC AVR Smart Car TW
SKU:
2226
In stock
This is Hall Effect magnetic sensor module DC 5V for Arduino.
Small size and high sensitivity. Fast response temperature and good performance. Precision and high reliability.
3144 Series Hall principle of Hall effect switch IC using technology to produce magnetic semiconductor integrated circuit which is determined by the voltage regulator Hall voltage generator differential amplifier Schmidt trigger temperature compensation circuit and the collector electrode open circuit output stage consisting of magnetic sensing circuit the input for the magnetic flux density the output is a digital voltage signal.
This section circuit pipe legs with pure tin production the complete model is 3144EUA-S or 3144LUA-S.
Item Size: 13x15MM
Color: black
Model: KY-003
12v Liquid Water Level Controller Sensor Module Water Tank full device off motor
SKU:
2214
In stock
This product is based on the actual needs of the family factories and pumping and the detection of the pool (water tower) to control the water level to achieve control.
With a small, simple wiring, low power consumption, high switching capacity, interference is strong, functional stability characteristics.
Automatically open when you can stably pool (water tower) water pump (solenoid) pumping,automatically stops the pump (solenoid) when full of water.
Local flooding can also be used for automatic rain drainage, such as garages, basements, etc
Material: Electronic Components
The product does not need to buy another probe, using household wiring can replace probe
BMP180 Digital Barometric Pressure Sensor Board Module Arduino swap BMP085
SKU:
2210
In stock
Operating Voltage : 1.8-3.6V
I2C interface - 3.5Mhz
Size : 21mm x 18mm
Pressure Range: 300hPa to 1100hPa (+9000m to -500m)
Calibrated
Low power consumption - 0.5uA at 1Hz
Works with BMP180/BMP085 Arduino Library
Use for weather forecasting, or calculate altitude from pressure reading.
With built in temperature sensor.
Voltage detection module DC 0-25V Voltage Sensor detector
SKU:
2197
In stock
TThis module is based on principle of resistive voltage divider design,
can make the red terminal connector input voltage to 5 times smaller.Arduino analog input voltages up to 5 v,
the voltage detection module input voltage not greater than 5Vx5=25V
(if using 3.3V systems, input voltage not greater than 3.3Vx5=16.5V).
Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023),
so the minimum voltage of input voltage detection module is 0.00489Vx5=0.02445V.
ACS712 30A Current Sensor Module Detector – ACS712ELC 30A Amps Amperage Range
SKU:
2195
In stock