DIY mobile power, car power, communications equipment and power supply.
Technical Parameters:
Module Properties: Non-isolated step-down module (BUCK)
Rectification: Non-synchronous rectifier
Input voltage: DC 5V-30V
Output voltage: DC 0.8V-24V (Adjustable, Output < Input)
Output current:Rated current is 2.5A,(5A Max, If current is larger than 2.5A, eEnhancement of heat dissipation is required.)
Note:Output voltage must be higher than Input Voltage
Input Voltage:2-6V(less than 3V,output power cut down)
Output Voltage:3.3V-9V adjustable(Input voltage must less than output voltage)
Output Current:Rated 2000mA (2.8V-3V input, 5V output, 1500MA output,(single lithium battery higher 2600MAH input,5V output, output current can up to 2000MA)
Note:Output voltage higher than 6V,Please connect power first,then connect load line
soil humidity module to the environmental humidity is the most sensitive, generally used to detect soil moisture.
module in soil moisture can not reach the setting threshold, DO mouth output high level, when soil moisture more than setting threshold, module D0 output low level;
small plate digital output D0 can be directly connected with the single chip microcomputer, through the single chip microcomputer to detect the high and low level, thus to detect soil moisture;
Stepper Driver A4988 Stepper Motor Driver Module with Heatsink
Low RDS (On) Output
Automatic current decay mode detection / selection
Mix with slow current decay modes
Synchronous rectification for low power dissipation
Internal UVLO
Cross-current protection
3.3 and 5 V compatible logic supply
This module is based on a touch detection IC (TTP223B) of Capacitive type touch jog switch module . This module default output low, the low-power mode to mode; when a finger touching the corresponding position, the module will output high and returns low again touch. Mode is switched to fast mode; when for 12 seconds without touching
Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)
Switching Frequency: 150KHz
Rectifier: Non-Synchronous Rectification
Module Properties: Non-isolated step-down module (buck)
Short circuit protection: current limiting, since the recovery
Operating temperature: Industrial grade (-40 to +85 ) (output power 10W or less)
Full load temperature rise: 40
Motor Drive Shield L293D for Arduino Duemilanove Mega / UNO
4-channel DC motor drives, stepper motor or 2 while driving two servos, You can mix:
DC motor driver quad and two steering gear
Drive two DC motor and stepper motor all the way and two-way steering gear
Drive two stepper motors and two servos
Adjust the light soft and stable, no flickering
PWM digital dimming, avoid rush current, protect your LED lights
Mainly use to adjust single color LED light lamps and Led Strip
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