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DIY a mobile power supply, only need one battery, you can output 5V voltage for your phone, MP3, MP4, PSP charger, very easy.In order to power your electronic devices when your device needs 5V power supply, when you only have lithium battery, this module can be directly step-up to 5V, solve your problems.
This 5.5mm/2.1mm barrel plug (male) & (Female) to screw terminal will come in very handy if you want a DC power connector that runs off a battery pack or wired power supply. There is a 5.5/2.1mm DC plug on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration (which is the most common). Simply hook up your selected power supply to the terminal points and you have DC power Plug with the output of your choice!
5V dc 5watt 5 inches LED tube Light. Working on DC volt. Best use as an emergency light. SMD used SMD. Ultra-bright white. You can directly run through your existing mobile power bank. Build it high quality LED driver. support any USB port
DC Power Jack Socket Connector DC005 5.5*2.1mm socket Round the needle. This is a common barrel-type power jack for DC wall supplies. These are compatible with our DC wall supplies and have a 5.5mm jack, with a 2.1mm center pole diameter.
DHT-11 Digital Temperature And Humidity Sensor is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so in your code please use sensor reading interval at 2 seconds or more. Compared to the DHT22, this sensor is less precise, less accurate and works in a smaller range of temperature/humidity, but its smaller and less expensive
DHT22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound has been calibrated digital signal output of the temperature and humidity sensors. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has high reliability and excellent long-term stability.
The DRV8825 provides an integrated motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, and can drive a bipolar stepper motor or two DC motors. The output driver block for each consists of N-channel power MOSFET’s configured as full H-bridges to drive the motor windings. The DRV8825 can supply up to 2.5-A peak or 1.75-A RMS output current (with proper heatsinking at 24 V and 25°C).
A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is programmable. Internal shutdown functions are provided for overcurrent protection, short circuit protection, under-voltage lockout and overtemperature. The DRV8825 is available in a 28-pin HTSSOP package with PowerPAD (Eco-friendly: RoHS & no Sb/Br
Stainless steel encapsulated waterproof temperature sensor DS18b20 temperature sensor 18B20. Original DS18B20 temperature sensor probe used chips.Encapsulated waterproof high quality stainless steel tube anti-rust. Stainless steel housing (6x50mm), leader length 100cm. After each probe to undergo a rigorous testing packaged individually
DC LED Profile Tube Light 4W 12V 6 inch Purple 
Cooling Fan 12V DC 3 Inch For All Purpose 
DC Buck Converter 5V3A USB Output Module 
