Fibre glass reinforced, 1 1/4" cut off wheels/disc for dremel/rotary tools 10pcs for 250php

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HTU21D Temperature and Humidity Sensor Temperature Sensor Breakout

Item Description:
The HTU21D is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for a weather stations or humidor control systems. All you need is two lines for I2C communication and you’ll have relative humidity readings and very accurate temperature readings as a bonus!
There are only four pins that need to be hooked up in order to start using this sensor in a project. One for VCC, one for GND, and two data lines for I2C communication. This breakout board has built in 4.7k pull up resistors for I2C communications. If you’re hooking up multiple I2C devices on the same bus, you may want to disable these resistors.

Features:
Power Supply: 1.5V-3.6V
Humidity measuring range: 0-100% RH
Temperature range: -40 ℃ -105 ℃
Maximum power consumption: 2.7uW
Communication: I2C
Humidity accuracy range (10% RH to 95% RH): HTU21D ± 2% RH
Humidity Hysteresis: ± 1% RH
Measurement time: 50ms
The annual shift: -0.5% RH / year
Response time: 5 s

Package Includes:
1 x HTU21D sensor module

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ESP-14 The strongest version Large-capacity flash-4M ESP8266 serial WIFI

Product Description:
ESP8266-14 is a low cost WIFI-MCU communication / control module, built ESP8266 WIFI communication IC and STM8003 microcontroller, with the industry's highly competitive package size and ultra-low power technology can be widely used in smart home network and the Internet of Things areas for connecting user's physical device to a Wi-Fi wireless network for Internet or LAN communications, networked functions.

The module is built into a powerful STM8003 chips, all connected all the pins come out, it is connected to the serial port and ESP8266, the user can write STM8 program, ESP8266 implementation of most of the intelligent lighting home and WIFI things by AT command control Features.

Package Includes:
1 x ESP-14 serial WIFI module

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30A Mini VNH2SP30 Stepper Motor Driver Monster Moto Shield module

Description: This is essentially a ramped up version of our Ardumoto motor driver shield. For this monster shield we've replaced the L298 H-bridge with a pair of VNH2SP30 full-bridge motor drivers. We've also beefed up the support circuitry so this board is capable of driving a pair of high-current motors! The VIN and motor out are pitched for our 5mm screw terminals (not included), making it easy to connect larger gauge wires.

Note: When using this board in extreme high-demand applications it may be necessary to improve thermal performance with a heat-sink or fan and to solder the wires directly to the board instead of using a screw terminal (in addition to the myriad other complications present in a high-current system) However, when using the board at currents up to 6A the chips will barely become noticeably warm.

Features:
Voltage max: 16V
Maximum current rating: 30 A
Practical Continuous Current: 14 A
Current sensing available to Arduino analog pin
MOSFET on-resistance: 19 mΩ (per leg)
Maximum PWM frequency: 20 kHz
Thermal Shutdown
Under voltage and Overvoltage shutdown

Package Includes:
1 x 30A Mini VNH2SP30 Stepper Motor Driver Monster Moto Shield module

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MCP4725 I2C DAC Breakout Development Board 12Bit Resolution

Description:
You’ve always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it! The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC). A DAC allows you to send analog signal, such as a sine wave, from a digital source, such as the I2C interface on the Arduino microcontroller. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!

This version of the CJMCU-MCP4725 Breakout fixes a few issues with the board including the IC footprint, the I2C pinout, changes the overall board dimensions to better fit your projects, and a few more minor tweaks. This board breaks out each pin you will need to access and use the MCP4725 including GND and Signal OUT pins for connecting to an oscilloscope or any other device you need to hook up to the board. Also on board are SCL, SDA, VCC, and another GND for your basic I2C pinout. Additionally, if you are looking to have more than one MCP4725 on a bus, the pull-up resistors on this board can be disabled just check the Hookup Guide in the Documents section below for instructions and tips on doing this.

Features:
12-bit resolution
I2C Interface (Standard, Fast, and High-Speed supported)
Small package
2.7V to 5.5V supply
Internal EEPROM to store settings

Package Includes:
1 x MCP4725 I2C DAC Breakout Development Board

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Microchip PIC18F4620-I/P, 8bit PIC Microcontroller, 40MHz, 64 kB, 1024 B Flash, 40-Pin PDIP

Product Details
PIC18F2525/2620/4525/4620 8-Bit Microcontrollers

The PIC18F Microcontrollers from Microchip are the most capable 8-bit devices within Microchip’s offer. Available within the range is CAN, LIN and Ethernet capability as part of a comprehensive range of peripherals to meet the needs of embedded applications and versions featuring XLP (Extreme Low-Power) Technology for where power consumption is a key consideration.

The PIC18F2525/2620/4525/4620 family of microcontrollers is based upon Microchip’s PIC18 architecture offering a 31 level hardware stack and 75 instructions. These MCUs provide up to 10 MIPS, up to 64 Kbytes program memory with RAM of 3968 bytes and data EEPROM of 124 bytes. On board is a configurable RC oscillator.

Microcontroller Features
40 MHz Max. CPU Speed
75 Instructions – 83 with Extended Instruction Set Enabled
31 Level Hardware Stack
Internal Oscillator – Selectable frequencies from 8 MHz to 31 kHz
25 I/O Pins – PIC18F2525/2620 Models
36 I/O Pins – PIC18F4525/4620 Models
nanoWatt Technology
Power-On Reset (POR)
Power-Up Timer (PWRT)
Oscillator Start-Up Timer (OST)
Brown-Out Reset (BOR)
Extended Watchdog Timer (WDT)
High/Low-Voltage Detection (HLVD) Module
In-Circuit Serial Programming (ICSP)
In-Circuit Debug (ICD)
Peripherals
10-bit Analogue to Digital Converter (ADC) – PIC18F2525/2620 10 Channel; PIC18F4525/4620 13 Channel
Capture, Compare, PWM Modules – PIC18F2525/2620 x 2; PIC18F4525/4620 x 1
One Enhanced Capture, Compare, PWM Module – PIC18F4525/4620 Models Only
Two Comparators
One 8-bit Timer
Three 16-bit Timers
Master Synchronous Serial Port (MSSP) Module with SPI and I2C
Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART)

Datasheet:
http://ww1.microchip.com/downloads/e...Doc/39626e.pdf

Package Includes:
1 x Microchip PIC18F4620-I/P, 8bit PIC Microcontroller, 40MHz, 64 kB, 1024 B Flash, 40-Pin PDIP

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Development Programmer Board for ATtiny13A/ATtiny25/ATtiny45/ATtiny85

CJMCU-ATTINY85-20PU DIP-8 pin DIP pluggable ATMEL
CJMCU-ATtiny13A / ATtiny25 / ATtiny45 / ATtiny85 pluggable Development Programming Board
Development board supporting chip:ATtiny13A / ATtiny25 / ATtiny45 / ATtiny85 etc

Package Includes:
1 x Development Programmer Board for ATtiny13A/ATtiny25/ATtiny45/ATtiny85

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HY-SRF05 5Pin Ultrasonic Distance Sensor Module Replace SR04 Module

Technical Data:
Operating voltage: 5V
Operating current: <2mA
Sensor angle: 15 degrees
Range: 2cm - 450cm
Resolution: 0.3cm
Output a 10us HIGH signal to Trigger input to start the detection
Measure the length of pulse received on Echo output to determine distance
Dimension: 21x45 mm

Package Includes:
1 x HY-SRF05 5Pin Ultrasonic Distance Sensor Module Replace SR04 Module

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RXB6 433Mhz Superheterodyne Wireless Receiver Module for Arduino/ARM/AVR

Description:
1. Receiver sensitivity reach -116dBm;
2. Operating frequency:433.92 MHz;
3. Power supply voltage input range: 3V-5.5V;
4. Low power consumption, 3.3V @ 433.92MHz, 6.0mA
5. Power Enable mode power consumption can be done lowest 50nA;
6. Has an analog RSSI signal strength level output;
7. Good selectivity and spurious radiation suppression, and easy through CE / Fcc international certification;
8. Good local oscillator radiation suppression, multiple receiver modules to work together (ie, more than single income) and will not interfere with each other, used together does not affect the receiving distance.
9. Temperature range: -40-85 ℃ can work even in harsh ambient temperature.

Applications
1. Car remote door switch (RKE);
2. Remote control door opener;
3. Wireless security alarm;
4. Remote control curtains;
5. The wireless industrial controller;
6. A wireless data transmission.

Package Included :
1 x RXB6 433Mhz Superheterodyne Wireless Receiver Module for Arduino/ARM/AVR

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Micro USB LilyTiny LilyPad ATtiny85 Development Board Module Arduino

Description:
8K Byte of In-System Programmable Program Memory Flash
512 Bytes In-System Programmable EEPROM
512 Bytes Internal SRAM
Diameter:25mm

Package Included:
1 x CJMCU-LilyTiny LilyPad ATtiny85 Development Board Professional Wearable Board

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XL4005 5A DC-DC adjustable step-down module

Description:
This product is a 180 KHz fixed frequency PWM buck (step-down) DC/DC module, capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation.
Module highlights:5A high power high efficiency and low ripple with power indicator !

Package Includes:
1 x XL4005 step down module

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