iot in sri lanka | LK-Tronics

Voltage To Current Module 0-5V to 0 -20mA Converter Module

darazsales — Thu, 08 Feb 2024 04:56:44 +0000

LK-Tronics
Voltage To Current Module 0-5V to 0 -20mA Converter Module

Voltage To Current Module 0-5V to 0 -20mA Converter Module

The voltage to current module can convert a 0-5V volt signal into a 4-20mA current signal.

In the process of signal transmission circuit voltage signal will become weak with the transmission distance increased, the transmission can avoid using the weak electric current signal.

Power supply voltage: DC 12V~24V.
Input voltsge signal: 0~5V.
Output current: 4-20mA.
Module size:5.5*2.5cm
Zero and span can be adjusted (potentiometer adjustment).
with the isolated nature of the non-optically isolated.

Package Include:

1 x Voltage to Current Transmitter Signal

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Voltage To Current Module 0-5V to 0 -20mA Converter Module
darazsales

MSP430F149 development board msp43 MCU development board

lahiru Dhananjaya — Thu, 25 Jan 2024 12:42:24 +0000

LK-Tronics
MSP430F149 development board msp43 MCU development board

MSP430F149 development board /msp43 MCU development board / experiment board / learning board with USB Download

DIY Supplies: ELECTRICAL
Origin: Mainland China
Certification: NONE

modname=ckeditor

Plate loadedUSBDownloader module，LED display，Key，relay，Buzzer，Real time clock，DA，AD，485Communication module，serial communication ，Stepper motor，DC motor，Nixie tube display module，Four wireless module interfaces，1602/12864LCD interface，Color screen expansion interface, etc，It’s a very experimental board；The development board has good expansibility，Clear design idea，OneUSBOnline download and learning，Is a very suitable for junior high school scholars to learn SCM experimental board.

Hardware resources are described as follows:

01.Main chipMSP430F149Microplate，Pluggable，Easy replacement;

02.OnboardUSBDownloader，OneUSBThe program can be downloaded through the line，convenient，Economics；For laptop customersNo need to buy an emulatorTo download，This module can also be realized by connecting the single chip microcomputer with DuPont lineUSBTo serial port communication;

03.alonePower module，Input power is DC5VperhapsUSBof5VPower Supply，Exportable5Vand3.3VVoltage，All power pins are out，Expansion during convenient experiment;

04.8positionLEDLuminescent tube，Can doWater lamp experimentAnd lamp indication test;

05.8Bit nixie tube display module，TestableDigital tube displayAnd indication experiment;

06.useMAX232Realize two-way serial port communication，Can doserial communication ，Realize communication and control between upper computer and lower computer;

07.MAX485chip，realization485Communication experiment;

08.4*4Dot matrix key，realizationLattice scanning experiment;

09.4Bit independent key，Realize commonKeyIOInput and interrupt test;

10.ULN2003chip，realizationStepper motor and DC motordrive control experiment;

11.SN74LVC4245chip，experiment3.3VLevel direction5VLevel conversionexperiment;

12.DS1302chip，Real realityClock experiment，Plate loaded toDS1302Powered battery，RightingDS1302Time continuity of，Does not stop working with the power failure of the motherboard;

13.AT24C02chip，realizationE2PROMStorage and reading of，adoptI2CBus de experiment;

14.DSC5571chip，experimentDAConversion experiment;

15.Two wayADinput，experimentADConversion experiment;

16.Integrated infrared receiver，experimentInfrared receiving and decoding experiment;

17.OneReset button，Reset the single chip microcomputer;

18.One circuit of relay that can be connected to high voltage control，realizationRelay controlexperiment;

19.All the wayBuzzerexperiment，Audible，Alarm test, etc;

20.OnboardFour common wireless module interfaces，includeNRF905，CC1100，NRF24L01，NRF2401A，CC2500Wireless module；Experimental wireless data transmission，Wireless control and other experiments;

21.PS2Keyboard input interface，can?Dee?keyboard entryexperiment;

22.Plate loaded1602and12864LCD interface，Testable1602and12864liquid crystalDisplay experiment;

23.Extension interface，It can be connected to the dot matrix Chinese character display module developed by our store，Voice module，Color screen module，Sensor expansion module, etc;

24.StandardJTAGInterface，The simulator can realize online debugging and downloading of the main chip through this interface;

25.Main chipAll pinsIOAll have been exported，Welded row needle，Convenient to expand the experiment and yourselfDIYexperiment;All of theModules are designed independentlyof，And the main chip are connected with each other through jumper caps，Remove the jumper cap if some application modules are required，Connect the control experiment through DuPont line or other aspects，All modulesIOControl can also be combined arbitrarily,Provide customers with more room to play;

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MSP430F149 development board msp43 MCU development board
lahiru Dhananjaya

Lora Node ASR6502 IOT Accessory CubeCell

lahiru Dhananjaya — Thu, 25 Jan 2024 12:05:22 +0000

LK-Tronics
Lora Node ASR6502 IOT Accessory CubeCell

Heltec IOT Accessory CubeCell Lora Node ASR6502 LoRaWAN node applications for arduino with Antenna 1/2AA battery case 868 915MHZ

Model Number: HTCC-AB02A
Brand Name: Heltec Automation
Origin: Mainland China

NOTE:

Include antenna;

Include SH1.25 x 2 battery connector;

Not include battery;

2.54 headers default not assemble.

HTCC-AB02A is a part of the “CubeCell“ series, with the following features:

Perfect Arduino-Compatible!

CE and FCC certification;

Based on ASR605x (ASR6501, ASR6502), those chips are already integrated the PSoC® 4000 series MCU (ARM® Cortex® M0+ Core) and SX1262;

LoRaWAN 1.0.2 support;

Ultra low power design, 3.5uA in deep sleep;

1/2 AA battery shell, use 1/2 AA Lithium chlorine sulfite battery (this battery can’t charge, but onboard USB / battery power automatic switching allows connect USB when the battery is assembled);

Micro USB interface with complete ESD protection, short circuit protection, RF shielding, and other protection measures;

Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing;

Good impendence matching and long communication distance.

Technical Parameters

MCU：ASR6502 (48 MHz ARM® Cortex® M0+ MCU, 128KB FLASH, 16KB SRAM )

LoRa Chip：ASR6502 (Internal assembled Semtech® LoRa® Transceiver SX1262)

LoRa working band：EU_433, CN_470_510, EU_863_870, US_902_928

LoRa maximum output power：22 ± 1dB

Hardware resources：
UART x 2; SPI x 1; I2C x 1; SWD x 1; ADCx 3; COMP x 1；
12 – bits ADC; 8 – channel DMA engine；
14 x GPIO；

FLASH：128KB internal FLASH

Interface：Micro USB x 1; LoRa (SMA) x 1

Size：56.6 x 24 x 20 mm

USB-UART bridge：CP2102

Battery Type：3.7V Lithium (SH1.25 x 2 socket)

Battery detection circuit：√

External device power control（Vext）：√

Low power design: Deep Sleep 3.5uA

Scene application

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Lora Node ASR6502 IOT Accessory CubeCell
lahiru Dhananjaya

IoT Module SIM7000G

lahiru Dhananjaya — Sun, 06 Aug 2023 14:55:18 +0000

LK-Tronics
IoT Module SIM7000G

IoT Module SIM7000G breakout,global-Band SIM-7000G kits 1pc,eMTC NB-IOT GNSS modem.

IoT Module SIM7000G is a cutting-edge device designed to enable seamless connectivity for Internet of Things (IoT) applications. With its advanced features, including global coverage, low power consumption, and high-speed data transfer, this module is ideal for a wide range of IoT applications, from smart homes to industrial automation.

Package: DIP
is_customized: Yes
Model Number: BK-SIM7000G
Condition: New
Type: NB module
Brand Name: ANDPROG
Origin: Mainland China
Frequency: Global-Band LTE CAT-M1, Global-Band LTE CAT NB-IoT1
PWRIN range: 5.0V to 10V, 5.0V is recommend
TCP/IP: Intergrated
Board size: 37*37mm
Antenna interface: U.FL internal antenna connector
Firmware required of module: Updated Firmware in random
Module: SIM7000G

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IoT Module SIM7000G
lahiru Dhananjaya

Waterproof White Box Enclosure

lahiru Dhananjaya — Wed, 19 Apr 2023 07:43:50 +0000

LK-Tronics
Waterproof White Box Enclosure

Waterproof White Box Enclosure (1159055) No clamp

1. Introducing our Waterproof White Box Enclosure, a versatile and durable solution for protecting your valuable electronic equipment in harsh environments. This enclosure is meticulously designed to provide a secure and watertight housing for your devices, ensuring their safety even in the most challenging conditions.

2. Crafted from high-quality white plastic, this enclosure offers a sleek and modern appearance that seamlessly blends into any setting. Its waterproof construction guarantees protection against water, dust, and other potential hazards, making it ideal for both indoor and outdoor applications.

3. The enclosure features a secure locking mechanism, ensuring that your equipment remains safe and tamper-proof. Its spacious interior provides ample room for accommodating various devices, such as circuit boards, sensors, or other electronic components.

4. With its easy-to-install design, this waterproof box enclosure offers hassle-free assembly and maintenance. It comes with pre-drilled mounting holes, allowing for quick and convenient installation on walls, poles, or any desired surface.

5. Whether you need to protect your electronics in industrial settings, outdoor installations, or even in marine environments, our Waterproof White Box Enclosure is the perfect choice. Trust in its reliability, durability, and superior protection to safeguard your valuable equipment from the elements.

Description:

Material: Plastic

Main Colour: Gray
Size：115 x 90 x 55 mm
Built-in hole hold circuit board.
Excellent waterproof and damp proof performance.

Good for electronic projects, power supply units, student projects, amplifiers, etc.

Package Include:

1 x White Box Enclosure Waterproof

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Waterproof White Box Enclosure
lahiru Dhananjaya

Grove Starter Kit Plus IOT Edition

lahiru Dhananjaya — Thu, 29 Sep 2022 17:15:21 +0000

LK-Tronics
Grove Starter Kit Plus IOT Edition

Grove Starter Kit Plus IOT Edition

Overview

This Grove Starter Kit IOT Beyond the Grove Shield is a bunch of Grove sensors and actuators with build-in Grove interfaces, makes your prototyping faster and easier. Simply plug in the modules and you are ready to create.

Features of Grove Starter Kit IOT

Various sensors and actuators
Plug-and-play modules
Works on a variety of Arduino-compatible boards

Part List:

Grove- Button 1
Grove – Sound Sensor 1
Grove – 3-Axis Digital Accelerometer(±1.5g) 1
Grove – Touch Sensor 1
Grove – Light Sensor 1
Grove – Temperature Sensor 1
Grove – Rotary Angle Sensor(P) 1
Grove – Pieze Vibration Sensor 1
Grove – LCD RGB Backlight 1
Grove – Buzzer 1
Grove – Green LED 1
Grove – Blue LED 1
Grove – Red LED 1
Gear Stepper Motor with Driver 1
Grove Base Shield V2 1
12V 2A American Standard AC/DC Power Adaptor 1
British Standard Plug Converter 1
European Standard Plug Converter 1
Australian Standard Plug Converter 1
Micro USB Cable 1

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Grove Starter Kit Plus IOT Edition
lahiru Dhananjaya

UNO WiFi R3 ATmega328P ESP8266 Devolopment Board

lahiru Dhananjaya — Fri, 17 Dec 2021 08:41:08 +0000

LK-Tronics
UNO WiFi R3 ATmega328P ESP8266 Devolopment Board

UNO WiFi R3 ATmega328P ESP8266 32Mb Memory

The UNO WiFi R3 ATmega328P is a powerful microcontroller board that combines the functionality of the classic Arduino UNO with an integrated WiFi module. It features an ATmega328P microcontroller, 14 digital input/output pins, 6 analog inputs, and a USB connection for programming and power. Ideal for IoT projects and wireless communication applications.

Model Number: UNO+WiFi-R3-AT328-ESP8266-32MB-CH340G
is customized: Yes
Supply Voltage: 6~9V recommend
Type: Logic ICs
Condition: New
MCU: ATmega328
Wi-Fi MCU: ESP8266
USB-converter: CH340G
Pin Out Uno: Uno R3

Packing list:

1*UNO + WiFi R3 ATmega328P+ESP8266 (32Mb memory) USB-TTL CH340G For Arduino NodeMCU

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UNO WiFi R3 ATmega328P ESP8266 Devolopment Board
lahiru Dhananjaya

ESP32 Development Board 2.4GHz WiFi+Bluetooth 38 Pin

Ashen Premathilake — Thu, 02 Dec 2021 13:30:32 +0000

LK-Tronics
ESP32 Development Board 2.4GHz WiFi+Bluetooth 38 Pin

ESP32 Development Board 2.4GHz WiFi+Bluetooth 38 Pin

ESP32 Development Board has already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters,

and power management module. The entire solution takes up the least amount of printed circuit board area.

This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology,

power and RF properties best, which is safe, reliable, and scalable to a variety of applications.

Features

High performance-price ratio
Small volume, easily embedded to other products
Strong function with support LWIP protocol, Freertos
Supporting three modes: AP, STA, and AP+STA
Supporting Lua program, easily to develop

Specifications:

Size: 5.8* 2.8* 1.2cm
Color: black
Model: ESP-32
Operating Temperature: -40 ~ +85
Supply Voltage: 3.3V

Package Included:

1* ESP-32 Development Board

Use the document download: https://github.com/Nicholas3388/LuaNode

Manual: https://github.com/SmartArduino/SZDOITWiKi/wiki/ESP8266—ESP32

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ESP32 Development Board 2.4GHz WiFi+Bluetooth 38 Pin
Ashen Premathilake

NodeMcu ESP8266 (CH340G) Development Board

Ashen Premathilake — Sun, 09 Aug 2020 04:43:44 +0000

LK-Tronics
NodeMcu ESP8266 (CH340G) Development Board

NodeMcu ESP8266 CH340G Development Board

NodeMCU is an open-source Lua based firmware and development board specially targeted for IoT based Applications. It includes firmware that runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which is based on the ESP-12 module.

NodeMCU Development Board Pinout Configuration

Pin Category	Name	Description
Power	Micro-USB, 3.3V, GND, Vin	Micro-USB: NodeMCU can be powered through the USB port 3.3V: Regulated 3.3V can be supplied to this pin to power the board GND: Ground pins Vin: External Power Supply
Control Pins	EN, RST	The pin and the button resets the microcontroller
Analog Pin	A0	Used to measure analog voltage in the range of 0-3.3V
GPIO Pins	GPIO1 to GPIO16	NodeMCU has 16 general purpose input-output pins on its board
SPI Pins	SD1, CMD, SD0, CLK	NodeMCU has four pins available for SPI communication.
UART Pins	TXD0, RXD0, TXD2, RXD2	NodeMCU has two UART interfaces, UART0 (RXD0 & TXD0) and UART1 (RXD1 & TXD1). UART1 is used to upload the firmware/program.
I2C Pins		NodeMCU has I2C functionality support but due to the internal functionality of these pins, you have to find which pin is I2C.

NodeMCU ESP8266 Specifications & Features

Microcontroller: Tensilica 32-bit RISC CPU Xtensa LX106
Operating Voltage: 3.3V
Input Voltage: 7-12V
Digital I/O Pins (DIO): 16
Analog Input Pins (ADC): 1
UARTs: 1
SPIs: 1
I2Cs: 1
Flash Memory: 4 MB
SRAM: 64 KB
Clock Speed: 80 MHz
USB-TTL based on CP2102 is included onboard, Enabling Plug n Play
PCB Antenna
Small Sized module to fit smartly inside your IoT projects

NodeMCU Documentation

NodeMCU is an open source Lua based firmware for the ESP8266 WiFi SOC from Espressif and uses an on-module flash-based SPIFFS file system. NodMcu is implemented in C and is layered on the Espressif NON-OS SDK.

The firmware was initially developed as is a companion project to the popular ESP8266-based NodMcu but the project is now community-supported, and the firmware can now be run on any ESP module.

Check below Sites for more products and official Arduino tutorials for LCD crystal display

https://www.arduino.cc/en/Tutorial

https://lk-tronics.com/

NodeMcu ESP8266 (CH340G) Development Board
Ashen Premathilake

NodeMcu V3 Lua CP2102 ESP8266 Development Board

Ashen Premathilake — Sat, 08 Aug 2020 18:28:07 +0000

LK-Tronics
NodeMcu V3 Lua CP2102 ESP8266 Development Board

NodeMcu V3 Lua ESP8266 CP2102 Specifications & Features

The NodeMCU Development Board is a versatile and easy-to-use platform for IoT projects. It features an ESP8266 Wi-Fi module, 4MB flash memory, and a USB-to-serial converter for programming and debugging. With its compact size and low power consumption, it is ideal for building connected devices and applications.

Microcontroller: Tensilica 32-bit RISC CPU Xtensa LX106
Operating Voltage: 3.3V
Input Voltage: 7-12V
Digital I/O Pins (DIO): 16
Analog Input Pins (ADC): 1
UARTs: 1
SPIs: 1
I2Cs: 1
Flash Memory: 4 MB
SRAM: 64 KB
Clock Speed: 80 MHz
USB-TTL
PCB Antenna
Small Sized module to fit smartly inside your IoT projects

NodeMCU Development Board Pinout Configuration

Pin Category	Name	Description
Power	Micro-USB, 3.3V, GND, Vin	Micro-USB: NodeMCU can be powered through the USB port 3.3V: Regulated 3.3V can be supplied to this pin to power the board GND: Ground pins Vin: External Power Supply
Control Pins	EN, RST	The pin and the button resets the microcontroller
Analog Pin	A0	Used to measure analog voltage in the range of 0-3.3V
GPIO Pins	GPIO1 to GPIO16	NodeMCU has 16 general purpose input-output pins on its board
SPI Pins	SD1, CMD, SD0, CLK	NodeMCU has four pins available for SPI communication.
UART Pins	TXD0, RXD0, TXD2, RXD2	NodeMCU has two UART interfaces, UART0 (RXD0 & TXD0) and UART1 (RXD1 & TXD1). UART1 is used to upload the firmware/program.
I2C Pins		NodeMCU has I2C functionality support but due to the internal functionality of these pins, you have to find which pin is I2C.

VISIT OUR FACEBOOK PAGE FOR MORE INFO | MORE PRODUCT IN OUR SHOP

NodeMcu V3 Lua CP2102 ESP8266 Development Board
Ashen Premathilake

iot in sri lanka | LK-Tronics

Voltage To Current Module 0-5V to 0 -20mA Converter Module

Voltage To Current Module 0-5V to 0 -20mA Converter Module

MSP430F149 development board msp43 MCU development board

MSP430F149 development board /msp43 MCU development board / experiment board / learning board with USB Download

Hardware resources are described as follows:

Lora Node ASR6502 IOT Accessory CubeCell

Heltec IOT Accessory CubeCell Lora Node ASR6502 LoRaWAN node applications for arduino with Antenna 1/2AA battery case 868 915MHZ

IoT Module SIM7000G

IoT Module SIM7000G breakout,global-Band SIM-7000G kits 1pc,eMTC NB-IOT GNSS modem.

Waterproof White Box Enclosure

Waterproof White Box Enclosure (115*90*55) No clamp

Description:

Package Include:

Grove Starter Kit Plus IOT Edition

Grove Starter Kit Plus IOT Edition

Overview

Features of Grove Starter Kit IOT

Part List:

UNO WiFi R3 ATmega328P ESP8266 Devolopment Board

UNO WiFi R3 ATmega328P ESP8266 32Mb Memory

Packing list:

ESP32 Development Board 2.4GHz WiFi+Bluetooth 38 Pin

ESP32 Development Board 2.4GHz WiFi+Bluetooth 38 Pin

Features

Specifications:

Package Included:

NodeMcu ESP8266 (CH340G) Development Board

NodeMcu ESP8266 CH340G Development Board

NodeMCU Development Board Pinout Configuration

NodeMCU ESP8266 Specifications & Features

NodeMCU Documentation

NodeMcu V3 Lua CP2102 ESP8266 Development Board

NodeMcu V3 Lua ESP8266 CP2102 Specifications & Features

NodeMCU Development Board Pinout Configuration

Waterproof White Box Enclosure (1159055) No clamp