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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Paper Circuit Kit
Conductive copper foil tape. Power: 3V coin cell (CR2032). Components: LEDs (3mm/5mm), push switch, battery holder. Use: series/parallel circuits on paper. Safe low-voltage.
5V 2.4A Lithium Battery Digital Display Charging Module with Dual USB Power Bank Module
[Lithium Battery Protection Board] Dual USB Output • LED Battery Display • Built-in Protection • DIY Power Bank Module The Dual USB 5V Power Bank Charging Module is a compact and feature-rich charging and protection board designed for building custom power banks using 3.7V Lithium-Ion or Lithium Polymer batteries. Supporting both USB Type-C and Micro USB charging inputs, the module provides convenient charging compatibility while delivering stable 5V output through dual USB ports. Equipped with an intelligent boost converter, the module efficiently converts the battery voltage (3.0V–4.2V) into a regulated 5V output with a maximum output current of 2.4A, making it suitable for charging smartphones, tablets, Bluetooth devices, smartwatches, and other USB-powered electronics. The onboard digital LED display shows the battery level from 0% to 100% in real time and also indicates charging (IN) and discharging (OUT) status, allowing users to easily monitor battery capacity. Designed with multiple safety features including overcharge, over-discharge, over-current, short-circuit, and constant current protection, this module ensures safe and reliable operation. It also includes dedicated LED terminals for adding a flashlight, making it an ideal solution for DIY portable power bank project Note: This module is designed for single-cell (1S) 3.7V Lithium-Ion/Li-Po batteries connected in parallel only. Do not connect batteries in series, as doing so may permanently damage the module. ⭐ Features Supports USB Type-C and Micro USB charging input Dual USB output ports for charging two devices simultaneously Maximum output current up to 2.4A Intelligent 5V boost converter Real-time LED battery percentage display (0–100%) Charging and output status indicators Built-in flashlight LED connection High conversion efficiency Multiple protection circuits for safe operation Compact PCB design for DIY power bank projects 📋 Technical Specifications Product Type: Power Bank Charging & Protection Module Battery Type: Single Cell (1S) Lithium-Ion / Lithium Polymer Battery Voltage: 3.0V–4.2V DC Charging Input: USB Type-C & Micro USB Input Voltage: 5V DC USB Output Ports: 2 Output Voltage: 5V DC Maximum Output Current: 2.4A Display Type: Digital LED Battery Percentage Display Battery Indicator: 0–100% Status Indicators: Charging (IN) / Output (OUT) Protection Functions: Overcharge Protection Over-discharge Protection Over-current Protection Short Circuit Protection Constant Current Charging LED Flashlight Output: Supported Module Dimensions: Approx. 65 × 25 × 10 mm 🔧 Applications Suitable for: DIY Power Banks 18650 Battery Packs Lithium Battery Projects Portable USB Chargers Emergency Power Supplies Mobile Phone Chargers Bluetooth Speaker Power Banks Raspberry Pi Power Supply Arduino Projects Portable Electronics DIY Electronics Battery Backup Systems 📦 Package Includes 1 × Dual USB 5V Type-C & Micro USB Power Bank Charging Module with LED Display ⚠️ Important Notes Connect the battery correctly: B+ to battery positive and B- to battery negative. Incorrect battery polarity may permanently damage the module. Use 3.7V Lithium-Ion or Li-Po batteries only. If using multiple cells, connect them only in parallel. Do not connect batteries in series, as this may cause overheating and permanent module failure. Quick Charge performance depends on the connected device, charging cable, charger, and battery quality.
Copper Bus Bar For HIGHSTAR 100AH Prismatic Cell -2MM
[Nickel Strip] COPPER BUS BAR for HighStart 100Ah Cell Material: High-quality copper for excellent conductivity Application: Designed for HighStart 100Ah battery cells Function: Efficient electrical power transfer between cells Durability: Corrosion-resistant and long-lasting Current Capacity: Suitable for high-current applications Use: Ideal for electric vehicles, energy storage, and high-capacity battery systems The Copper Bus Bar for HighStart 100Ah Cell is an essential component designed for connecting and conducting electricity between cells in battery packs, particularly for the HighStart 100Ah model. Made from high-quality copper, known for its excellent electrical conductivity, this bus bar ensures efficient power transfer and minimizes energy loss. The copper material also provides superior durability and resistance to corrosion, ensuring long-lasting performance in various environments. It is specifically engineered to handle high currents, making it ideal for use in high-capacity battery systems, such as those used in electric vehicles, renewable energy storage, and other demanding applications. This copper busbar is designed for reliable interconnection of lithium cells, particularly compatible with Ganfeng 86Ah and 100Ah cells, as well as Highstar 100Ah in parallel configurations. In electrical power distribution, a bus bar is a strip of copper or aluminum that conducts electricity within a switchboard, distribution board, substation or other electrical apparatus The size of the bus bar determines the maximum amount of current that can be safely carried. For rigid electrical connections, Tinned coated Copper Bus Bars offer a very efficient solution. Resistivity in copper bars is very low, 25 in^2 bar 1 foot long is only 0.0000329 Ohms – roughly 8 Watts lost at 500 Amps. Size : 70 x 20 x 2mm Package Includes : 1 x Copper Bus Bar For HIGHSTAR 100AH Prismatic Cell -2MM
JHD 16×2 Character LCD Display With Blue Backlight
[LED/LCD Display Module] If you want to add some visual output to your Arduino projects, you’ll need a display. If you need only a little to display, the LCD 16×2 Parallel LCD Display is a quite good solution. This is a Original JHD 16×2 Character LCD Display With Blue Backlight as there are many fake JHD Displays in the Market. This is a great blue backlight LCD display. It is fantastic for Arduino based project. This LCD 16×2 Parallel LCD Display with Blue Backlight is very easy to interface with Arduino or Other Microcontrollers. This is LCD 16×2 Parallel LCD Display that provides a simple and cost-effective solution for adding a 16×2 White on RGB Liquid Crystal Display into your project. The display is 16 character by 2 line display that has a very clear and high contrast white text upon a blue background/backlight. The values shown on the display can be either simple text or numerical values read by the sensors, such as temperature or pressure, or even the number of cycles that the Arduino is performing. For more displays click below, LED/LCD Display Features : 16 characters wide, 2 rows White text on the yellow background Single LED backlight included can be dimmed easily with a resistor or PWM. Can be fully controlled with only 6 digital lines! (Any analog/digital pins can be used) Specifications: Model： JHD659 B/W Display： 16×2 character Outline： 80.0×36.0×14.5 VA： 64.5×14.5 Controller： SPLC780D Character： 2.95×4.35 Driver： 1/16 LCD： STN Blue Negative Backlight： White LED Package Includes : 1 x JHD 16×2 Character LCD Display With Blue Backlight
1S to 8S Battery Level Indicator Module For Li-ion Battery
[Li-Ion Capacity Indicator] Description: This is a 1S-8S Battery Capacity Indicator Module. The charge status (capacity) of 18650 Lithium-ion batteries and other lithium batteries with a maximum voltage of 4.2 volts per cell can be quickly visualized using these modules. This 1S-8S Battery Capacity Indicator module is ideal for DIY power supply, battery chargers, RC, and electric cars, as 1S-8S Battery Capacity Indicator displays the voltage state of the battery in a rapid and easy-to-read manner. Simply connect the 1S to 8S Battery Level Indicator module to the positive and negative contacts of your battery or battery pack, and a visible bar display shows the charge status of the battery in real-time. The 1S-8S Battery Capacity Indicator Display bars are Green, and the display outline is red. 1S-8S Battery Capacity Indicator can be used as an indicator for 1 to 8 cells or 1S to 8s Battery Pack and is user-configurable with a jumper pad setting. 1S-8S Battery Capacity Indicator has a Compact design with 4-segment display. Specifications: Number of Cells: 1~8S Number of cell Pre-set Setting: 1 Cell Indicator Type: 4 Bar Graph Operating Voltage: 3V-34VDC Operating Current: 5mA Operating Temperature: 10℃~65℃ Color: Blue and Outline red How to Use: Connect the positive and negative terminals of the display panel to the positive and negative terminals of the tested battery in parallel, and the digital tube not only displays the real-time battery power. Display power quantity parameters: (Note: N represents the number of batteries) When the battery voltage exceeds N*3.3V, it will illuminate 1 battery When the battery voltage exceeds N*3.5V, it will illuminate 2 pieces of electricity When the battery voltage exceeds N*3.7V, it will illuminate 3 pieces of electricity When the battery voltage exceeds N*3.9V, it will illuminate 4 pieces of electricity When the battery voltage is less than N*3.3V, the 4 displays will be turned off Package Included: 1 x 1S-8S Battery Capacity Indicator 1S to 8S Battery Level Indicator Module – Li-ion Battery Level Indicator *product image for illustration purposes only. actual product may vary.
Type C BMS 2S 2A 18650 Lithium Battery Charger Board USB C Step-up Boost Module for Li-Po Polymer Power Bank
[Li-ion Rechargeable Battery Charger] 2S 2A Type-C Lithium Battery Charging Module – 8.4V Step-Up Boost Charger for 18650 The 2S 2A Type-C Lithium Battery Charging Module is a compact step-up charging board designed for charging 2-cell series (2S) 18650 Li-ion/Li-Po battery packs. It accepts a low-voltage 3–6V DC input through USB Type-C and boosts the voltage to the required 8.4V charging voltage for a 2S lithium battery pack. The module includes battery overvoltage, low-voltage and short-circuit protection features. ⭐ Key Features Designed for 2S lithium-ion/Li-Po battery packs Suitable for 2 × 18650 cells connected in series USB Type-C input DC input range: 3–6V Recommended input: 3.7V or 5V Boost/step-up charging circuit 8.4V charging output 2A input-current version Switching frequency up to 1MHz Quasi-CV charging mode Automatic recharge function Battery overvoltage protection Low-voltage protection Short-circuit protection Compact PCB design Suitable for DIY power-bank and battery-pack projects 📋 Technical Specifications Product Type: 2S Lithium Battery Charging Module Battery Configuration: 2S (2 cells in series) Compatible Battery: 3.6V/3.7V Li-ion / Li-Po Typical Battery Pack: 7.4V nominal Full-Charge Voltage: 8.4V Input Voltage: DC 3–6V Recommended Input: DC 3.7V / 5V Input Current: Up to 2A for 2A version Charging Voltage: 8.4V Charging Current: Approximately 1.1A for the 2A-input version Switching Frequency: Up to 1MHz Protection: Overvoltage, low-voltage and short-circuit protection Operating Temperature: -40°C to +85°C Board Size: Approximately 39 × 18 × 6.3mm Important: Although this product is commonly described as a 2S 2A charger, the available specifications indicate that the 2A figure refers to the input-current version, while the charging current is approximately 1.1A. 🔧 Applications 2S 18650 battery packs 7.4V Li-ion battery packs 2S Li-Po battery packs DIY power banks Portable electronics Bluetooth speaker battery systems Small backup power systems Solar-powered electronics MP3/MP4 and portable devices DIY battery charging projects Type-C rechargeable equipment 🛠️ How It Works The module takes 3–6V DC input through its Type-C connector and uses a boost charging circuit to increase the voltage to 8.4V, which is required to charge a fully charged 2S lithium battery pack. Example: 5V USB Type-C → Boost Charger → 8.4V → 2S 18650 Battery Pack The module is intended for 2 cells connected in series, not two cells connected in parallel. ⚠️ Important Notes Use only a properly configured 2S battery pack. The two cells should be properly matched and in good condition. Do not connect a single 18650 cell directly to this 2S charger output. Do not exceed the specified 6V maximum input voltage. Use a suitable USB Type-C power source capable of supplying the required input current. The 8.4V output is intended for a 2S lithium battery pack. Check the PCB markings carefully before connecting the battery. This module should not be treated as a high-current BMS unless the specific board version explicitly provides the required protection/balancing functions. Do not deliberately short-circuit the input or output. Actual charging performance depends on the input supply, battery condition and thermal environment. 📦 Package Includes 1 × 2S 2A Type-C Step-Up Boost Lithium Battery Charging Module
Out of stockLCD2004 Parallel LCD Display Yellow Backlight with IIC/I2C Interface
[LED/LCD Display Module] If you want to add some visual output to your Arduino projects, you’ll need a display. If you need moderate data on display, the LCD2004 Parallel LCD Display is a quite good solution. This is LCD2004 Parallel LCD Display that provides a simple and cost-effective solution for adding a 20×4 Black on RGB Liquid Crystal Display into your project. The display is 20 character by 4 line display has a very clear and high contrast black text upon a yellow background/backlight. This is great yellow backlight LCD display. It is fantastic for Arduino based project. This LCD2004 Parallel LCD Display with Yellow Backlight is very easy to interface with Arduino or Other Microcontrollers. The values shown on the display can be either a simple text or numerical values read by the sensors, such as temperature or pressure, or even the number of cycles that the Arduino is performing. One thing to consider is you’ll waste about 8 Pins on your Arduino for the display to get working. Luckily there exists an I2C adapter that you can solder right onto the pins of the display. So all you need to connect are the I2C pins, which shows a good library and little of coding. For more displays click below, LED/LCD Display Features : 20 characters wide, 4 rows Black text on the yellow background The module can easily interface with an MCU The module is a low-power consumption character LCD Module with a built-in controller Single LED backlight included can be dimmed easily with a resistor or PWM. Can be fully controlled with only 6 digital lines! (Any analog/digital pins can be used) Package Includes : 1 x LCD2004 Parallel LCD Display Yellow Backlight with IIC/I2C Interface
Nickel Strip 0.15mm thick 2P Plane Coated Nickel Welding Strip For 32650 Lithium Battery Pack (Size – 50mm)
[Nickel Strip] H-Type Battery Connection Welding Strip for 32650 lithium battery Nickel strips are used in the welding of battery points together to connect the batteries in combinations. These Nickel strips are popular because of their good performance while soldering as it gets soldered very quickly and easily with normal soldering metal with High tensile tension and Low resistivity. They are mainly used in the manufacture of nickel-hydrogen batteries, lithium batteries, high magnification power tools batteries, laptop batteries, battery combinations with HM. The 50mm x 0.12 – 0.15mm Nickel Plated Strip is a high-quality conductive material designed for connecting batteries in parallel configurations. With its optimal width and thickness, it ensures efficient current flow and low resistance for stable performance. The strip is corrosion-resistant, offering durability and reliability in various applications. Perfect for DIY battery packs, it supports secure spot welding with excellent conductivity. Suitable for 32650/32700, and similar battery types, it accommodates two parallel connections seamlessly. Ideal for professionals and hobbyists, this nickel strip provides robust and long-lasting battery interconnections. Features: High Conductivity 0.12-0.15mm thickness 50mm width High-purity nickel Compatible with spot welding High Current Handling Lightweight Design Package Includes: 1 x 22mm x 0.12-0.15mm Nickel Plated Strip For 2 Parallel Battery Connections – 1 Meter
18650 3.7V 2000mAh Lithium-Ion Rechargeable Battery Cell
[Lithium Battery Cell] The 18650 3.7V 2000mAh Lithium-Ion Rechargeable Cell is a high-performance cylindrical lithium battery designed for reliable and long-lasting power delivery. With a nominal voltage of 3.7V and a capacity of 2000mAh, this cell is ideal for building DIY battery packs, power banks, backup batteries, flashlights, robotics systems, and portable electronic devices. Manufactured using high-quality lithium-ion chemistry, this rechargeable cell offers stable discharge, low internal resistance, and excellent cycle life. It can be connected in series or parallel configurations to create higher voltage or higher capacity battery packs for various applications. The standard 18650 size format makes it compatible with most battery holders, chargers, and BMS boards. When used with a proper BMS (Battery Management System) and charger, this cell provides safe and efficient performance. ⭐ KEY FEATURES ✔ Nominal Voltage: 3.7V✔ Capacity: 2000mAh✔ Rechargeable Lithium-Ion Chemistry✔ Standard 18650 Size – wide compatibility✔ Long cycle life & stable output✔ Low self-discharge rate✔ Ideal for DIY battery packs & portable power projects 🔧 TECHNICAL SPECIFICATIONS Battery Type: Lithium-Ion (Li-ion) Model Size: 18650 Nominal Voltage: 3.7V Rated Capacity: 2000mAh(Actual Capacity may be vary) Charging Voltage: 4.2V (Max) Discharge Cut-off Voltage: ~2.5V Rechargeable: Yes Form Factor: Cylindrical 🎯 APPLICATIONS Power banks & portable chargers DIY lithium battery packs Flashlights & emergency lights Robotics & automation projects Solar battery storage UPS & backup power systems Toys & electronic gadgets 📦 PACKAGE INCLUDES 1 × 18650 3.7V 2000mAh Lithium-Ion Rechargeable Battery Cell Note: Images shown are for illustrative purposes only. Actual Product may vary.
1S 12A 18650 3.7V lithium battery protection plate 6 MOS
[Lithium Battery Protection Board] Nowadays Li-ion batteries are most popular to be used in many indoor and outdoor gadgets, these batteries are preferred due to their high charge storage capacity. such batteries are widely used in today’s portable devices. they are compact, more efficient and have a high energy intensity compared to other types of batteries. One drawback of such a battery is that we need to continually monitor their charging and discharging process if we do not do this, it badly affects battery life and also reduces the charge storing capacity. If we discharge such battery below certain voltage range, then the battery cell has a high risk of damage and if we overcharge such battery then it may explode. To overcome such issues, we can use battery protection and battery charging circuits such as this product. This is Li-ion single-cell charger/protection circuit which can be used to charge a single cell of 15 Amp capacity or 2500Mah parallel-connected 5 to 6 li-ion cells. In this MOSFET are employed to do the monitoring task which protects our battery cells from overcharge, over-discharge, and from short circuit. Protection : Overcharge protection. over-discharge protection. short circuit protection. overcurrent protection. Wiring instructions: B+ battery is positive. B- battery negative. P+ outputs the positive input for the battery pack. P- outputs the negative electrode for the battery pack. Specifications and Features : Overcharge detection voltage : 4.25 + 0.05V. Over charge release voltage : 4.23 + 0.05V. discharge detection voltage : 2.45 + 0.1V. Ceiling continuous current : 12A. Overcurrent detection current : 15A. Input Charging voltage : 4.2V. IC components : DW01+8205A. Package Includes : 1 x 1S 18650 3.7V lithium battery protection plate 6 MOS.
18650 Battery Spacer Holder 3×1 – High-Strength Lithium-Ion Cell Bracket for Pack Building
[Lithium Battery Holder] The 18650 3×1 Lithium-Ion Battery Cell Spacer Holder is a high-strength, durable cell bracket designed for building safe, stable, and professional-grade battery packs. This spacer securely holds three 18650 cells in a 3×1 configuration, ensuring proper spacing for heat dissipation, vibration resistance, and long battery life. Made from high-quality ABS material, the holder provides excellent insulation and structural stability, making it ideal for battery pack assembly in DIY projects, e-bikes, power banks, solar street lights, robotics, UPS systems, and energy storage projects.Perfect for spot welding setups, the modular design allows easy stacking and expansion to create larger battery packs with consistent alignment and safety. ✅ Features High-quality 3×1 spacer holder for 18650 lithium-ion cells Provides secure fit and stable structure for battery pack assembly Ensures proper spacing for heat dissipation and long cell life Made from durable, high-temperature ABS plastic Ideal for DIY battery packs, e-bikes, solar lights, power banks & UPS systems Perfect for spot welding and series/parallel battery configuration Modular design allows easy expansion for large battery packs Prevents cell movement, vibration damage, and short circuits Note: Battery is not included, you need to buy it separately. Package Includes: 1 x 18650 Battery Spacer Holder 3×1 – High-Strength Lithium-Ion Cell Bracket for Pack Building
3 Volt DC Rectangle COB LED Light Led Bulb Raw Material White Light
[COB LED] Description No Extra Circuit or Led driver Required, directly connect it on 3 VOLT DC, Colour Temperature: 6500K, Do not connect this COB direct with the AC current. Introducing the COB LED: Illuminate Your World with Brilliant Efficiency. Discover the future of lighting technology with our revolutionary COB LED. The COB LED is the perfect lighting solution for various applications and is designed to provide exceptional brightness, energy efficiency, and versatility. Whether lighting up your home, office, or outdoor spaces, the COB LED delivers unparalleled performance that will transform your environment. Product Description : Main Material: Aluminum-alloy plate Power: 5 W Input Voltage: DC 3-4V Max Current:1700mA Light Color: Cold White COB size: 50mm diameter Package Includes: 1 x 3 Volt DC Rectangle COB LED Light Led Bulb Raw Material White Light
IIC/I2C Serial Interface Adapter Module ( Made In India)
[LED/LCD Display Module] This is a RoHS compliant I2C Serial LCD Daughter board that can be connected to a standard 16×2 or 20×4 Character Display Module that supports 4-bit mode. All Character Modules sold on our site support 4-bit mode, and nearly all commercially available 16×2 and 20×4 line character modules support it too. This board has a PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display. There are many examples on the internet for using this board with Arduino. Do a search for “Arduino LCD PCF8574“. The I2C address is 0x3F by default, but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one it’s own address) Specifications and Features: 5V power supply. Serial I2C control of LCD display using PCF8574. Backlight can be enabled or disabled via a jumper on the board. Contrast control via a potentiometer. Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing. Size ：41.6 x 19.2 mm. Package Includes: 1 x IIC/I2C Serial Interface Adapter Module
Out of stock74HC595 Serial to Parallel Shifting IC
[Logic Gates IC] DESCRIPTION:- The 74HC595N is a simple 8-bit shift register IC. Simply put, this shift register is a device that allows additional inputs or outputs to be added to a microcontroller by converting data between parallel and serial formats. Your chosen microprocessor is able to communicate with The 74HC595N using serial information then gathers or outputs information in a parallel (multi-pin) format. Essentially it takes 8 bits from the serial input and then outputs them to 8 pins. This small DIP packaged IC contains an 8-bit, serial-in-parallel-out shift register that feeds an 8-bit D-type storage register with parallel 3-state outputs. Pin Configuration:- Pin Number Pin Name Description 1,2,3,4,5,6,7 Output Pins (Q1 to Q7) The 74hc595 has 8 output pins out of which 7 are these pins. They can be controlled serially 8 Ground Connected to the Ground of the circuit 9 (Q7) Serial Output This pin is used to connect more than one 74hc595 as cascading 10 (MR) Master Reset Resets all outputs as low. Must be held high for normal operation 11 (SH_CP) Clock This is the clock pin to which the clock signal has to be provided from MCU/MPU 12 (ST_CP) Latch The Latch pin is used to update the data to the output pins. It is active high 13 (OE) Output Enable The Output Enable is used to turn off the outputs. Must be held low for normal operation 14 (DS) Serial Data This is the pin to which data is sent, based on which the 8 outputs are controlled 15 (Q0) Output The first output pin. 16 Vcc This pin powers the IC, typically +5V is used. Features :- 8-bit, Serial In – Parallel out Shift register Operating Voltage: 2V to 6V Power Consumption: 80uA Output source/sink current: 35mA Output Voltage is equal to Operating voltage Minimum high-level Input Voltage: 3.15V @(Vcc=4.5V) Maximum low-level Input Voltage: 1.35V @(Vcc=4.5V) Can be easily cascaded with more IC to get more outputs Maximum Clock Frequency: 25Mhz @4.5V Available in 16-pin PDIP, GDIP, PDSO packages Where to Use 74HC595 IC:- The 74HC595 is an 8-bit Serial In – Parallel Out Shift Register, i.e. it can receive (input) data serially and control 8 output pins in parallel. This comes in very handy where do not have enough GPIO pins on our MCU/MPU to control the required number of outputs. It is often used in projects where relatively a large number of LED's has to be controlled through the Microcontroller. It can also be used to interface LCD screen since they can acts as the data bit for the LCD displays. It can also be used to control 5V loads like relays through a 3.3V microcontroller since the high-level voltage is only 3.15. So if you are looking for an IC to save on your GPIO pins on the Microcontroller then this IC might be the right choice for you. How to Use a 74HC595 IC:- The 74HC595 shift register is commonly used with microcontrollers or microprocessors to expand the GIPO functionalities. It requires only 3 pins connected to the MCU, which are Clock, Data and Latch. It has a wide operating voltage from 2V to 6V. An application circuit of the IC is shown below: Package Includes:- 1 x 74HC595 IC
Out of stock18650×4 Quadruple Battery Cell Holder/Case with Wire
[Lithium Battery Holder] Black Plastic Storage Box Case Holder for Battery 4 x 18650 Cell Box, without Cover Parallel Connection This 18650 battery Four cell holder is used to carry/store/keep your lithium-ion battery in a perfect and safe position. It comes with a Double mounting hole in the center of the plastic case which can help us in mounting it on any surface using screws of 3mm. It also has two leads or connecting wires of red and black color respectively which is very convenient and can help the user in powering the circuit with no need of soldering any external wires. Features : Made for Four 18650 batteries. Easy to install, using mounting holes. Comes with different colored soldered wires. Package Includes : 1 x 18650 Battery Four Cell Holder/Case
Out of stock16×2 (1602) Character Blue Backlight LCD Display
[LED/LCD Display Module] This is a basic 16 character by 2 line Alphanumeric display. White text on Blue background. Utilizes the extremely common HD44780 parallel interface chipset . Interface code is freely available. You will need Minimum 6 general I/O pins to interface to this LCD screen. Includes LED backlight. Works in 4bit and 8 bit Mode. Features: 16 Characters x 2 Lines Blue Backlight 5×7 Dot Matrix Character + Cursor HD44780 Equivalent LCD Controller/driver Built-In 4-bit or 8-bit MPU Interface Standard Type Works with almost any Microcontroller * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stock1602 16×2 LCD Display with I2C/IIC interface – Blue Backlight
[LED/LCD Display Module] This is LCD 1602 Parallel LCD Display that provides a simple and cost-effective solution for adding a 16×2 White on Liquid Crystal Display into your project. The display is 16 character by 2 line display has a very clear and high contrast white text upon a blue background/backlight. This is great blue backlight LCD display. It is fantastic for Arduino based project. This LCD1602 LCD Display is very easy to interface with Arduino or Other Microcontrollers. This display overcomes the drawback of LCD 1602 Parallel LCD Display in which you’ll waste about 8 Pins on your Arduino for the display to get working. Luckily in this product, an I2C adapter is directly soldered right onto the pins of the display. So all you need to connect are the I2C pins, which shows a good library and little of coding. The I2C is a type of serial bus developed by Philips, which uses two bidirectional lines, called SDA (Serial Data Line) and SCL (Serial Clock Line). Both must be connected via pulled-up resistors. The usage voltages are standard as 5V and 3.3V. If you already have the I2C adapter soldered onto the board like in this product, the wiring is quite easy. You should usually have only four pins to hook up. VCC and GND of course. The LCD display works with 5 Volts. So we go for the 5V Pin. The values shown on the display can be either a simple text or numerical values read by the sensors, such as temperature or pressure, or even the number of cycles that the Arduino is performing. Arduino IIC/I2C interface was developed to reduce the IO port usage on Arduino board I2C adapter allows flexibility in connections I2C Reduces the overall wirings. 16 characters wide, 2 rows White text on the Blue background Single LED backlight included can be dimmed easily with a resistor or PWM. Interface: I2C Interface Address: 0x27 Character Color: White Backlight: Blue Supply voltage: 5V