DC 5V Micro Submersible Mini Water Pump

You can use this fish tank fountain in a fish tank or aquarium to beautify the tank, making it dynamic and unique. You can connect with a hose on the water outlet, then put it in the water and pump out the water. It can be powered by DC 3/4.5V,the wire is designed with two different color, making the wiring not confused is durable and long lasting, the housing is abrasion resistant and anti-breakage. The surface is smooth without burry won’t feel any discomfort while Tousignant you can clean the surface easily.

1. Rated voltage: DC3V or 5V

2. It is best not to overpressure the voltage.

3. No load rated current: within 0.05A

4. No load spit water: 100L/H

5. Head: 3V specification lift 0.35 meters, 4.5V specification lift 0.5 meters

6. Current rating at load: 0.18A

7. How to use: Submersible

8. Noise: 40dB MAX (background noise 35dB, less than 0.5M)

9. Use fluids: tap water, ground water, sea water,

10. Water temperature: -20 ° C ~ 50 ° C

11. Ambient humidity: 45% ~ 90%

13. Weight: 30g

14. Power cord length: about 20 cm

Package Include:

1 x DC 5V Micro Submersible Mini Water Pump

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DC 5V Micro Submersible Mini Water Pump
lahiru Dhananjaya

Micro USB 5V 1A 18650 TP4056 Lithium Battery Charger Module

Specifications

Electrical Parameters

• Input Voltage: 4.5V to 5.5V DC (via Mini USB or solder pads)
• Charging Voltage: 4.2V ± 1% (constant voltage)
• Charging Current: Adjustable, default 1A (via resistor configuration)
• Input Current: Up to 1A (based on the charging current setting)
• Efficiency: ~85% at 1A charging current
• Battery Type: Single-cell lithium-ion/lithium-polymer
• Termination Current: 10% of programmed charging current (e.g., 100mA for 1A setup)

Features

1. Protection Circuits:
   • Overcharge Protection
   • Overcurrent Protection
   • Short-circuit Protection
   • Reverse Polarity Protection (limited to input connections)
2. Thermal Regulation: Automatically reduces charging current to prevent overheating.
3. Soft Start: Reduces inrush current during startup.
4. Automatic Recharge: Initiates charging if the battery voltage drops below a preset level (~4.05V).

Adjustable Charging Current

• The charging current can be adjusted by replacing the onboard resistor (RPROG):
  • Default: 1.2kΩ for 1A current
  • Approximate Formula: I_CHARGE = 1200V / RPROG (Ω)

Applications

• DIY Electronics
• Power Banks
• Battery Management Systems
• Portable Devices
• Solar Charging Systems

Operating Conditions

• Operating Temperature: -10°C to +85°C
• Storage Temperature: -65°C to +125°C
• Humidity: 5% to 90% RH (non-condensing)

Safety Recommendations

• Ensure proper heat dissipation if charging at high currents.
• Do not exceed the recommended input voltage (5.5V).
• Use with batteries having built-in protection circuits for maximum safety.

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TP4056 Lithium Battery Charger Module – MINI USB
Ashen Premathilake

Buy Solar Panel 5V 100ma Portable Mini DIY Module

Product material: polycrystalline silicon

Operating voltage: DC 5V

Power: 100ma

Product size: 100x69mm

Packing include:

1 x solar panel

Solar Panel 5V 100ma Portable Mini DIY Module
Ashen Premathilake

DC5V 16 Channel Low Level with Light Coupling Power Supply Relay Module

• Each 5V 16 Channel Relay Module needs 15-20mA driver current.
• Uses two 8-channel ULN2803APG darlington arrays chip to control relay module.
• This is a 16-channel relay module interface board, which can be controlled directly by a wide range of
• microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc.
• It is also able to control various appliances and other equipments with large current.
• Relay output maximum contact is AC250V 10A and DC30V 10A.
• Standard interface can be directly connected with microcontrollers.
• The working status indicator lights are conducive to the safe use.
• Widely used for all MCU control, industrial sector, PLC control, smart home control.

Specifications:

• Working voltage: 5V
• Channel: 16 channels
• Item size: 17.6 * 9 * 1.7cm / 6.93 * 3.54 * 0.67in
• Item weight: approx 240g / 8.47oz
• Package weight: approx 251g

Package:

• 1PCS x 16-Channel Relay Shield Module with optocoupler LM2576 Power supply for Arduino

Sinhala YouTube video https://www.youtube.com/watch?v=VYHut9XpMH8

More Relay module products, Visit – https://lk-tronics.com/product/5v-4-channel-relay-module/

DC5V 16 Channel Low Level with Light Coupling Power Supply Relay Module
Ashen Premathilake

5v 4 Channel Relay Module

This is a 5V 4 Channel Relay module interface board, be able to control various appliances, and other equipment’s with large current. It can be controlled directly by Micro-controller (Raspberry pi, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)

• Maximum load: AC 250V/10A, DC 30V/10A
• Trigger current: 5mA
• Working voltage: 5V
• Module size: 50 x 26 x 18.5mm (L x W x H)
• Four mounting bolts holes, diameter 3.1mm
• DC+: positive power supply (VCC)
• DC-: negative power supply (GND)
• IN: high level control relay
• NO: normally open relay interface
• COM: Common Interface Relays
• NC: normally closed relay interface

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5v Relay 4 Channel Module
lahiru Dhananjaya