Description
The DS3231 is a low-cost, extremely accurate
Description
The DS3231 is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SO package.
The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an active-low AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. Address and data are transferred serially through an I²C bidirectional bus.
A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, to provide a reset output, and to automatically switch to the backup supply when necessary. Additionally, the active-low RST pin is monitored as a pushbutton input for generating a µP reset.
Features
Accuracy ±2ppm from 0°C to +40°C
Accuracy ±3.5ppm from -40°C to +85°C
Battery Backup Input for Continuous Timekeeping
Operating Temperature Ranges
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100
Two Time-of-Day Alarms
Programmable Square-Wave Output
Fast (400kHz) I²C Interface
3.3V Operation
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
Active-Low RST Output/Pushbutton Reset Debounce Input
description:
This wireless transceiver module is an easy
description:
This wireless transceiver module is an easy and suitable module if you want to setup your wireless communication system with low cost!! It can achieve a good balance between wireless transition performance and cost! You can easily add it with your own MCU/ARM/PIC/AVR/STM32 system! What\'s more, this NRF24L01+ module is designed with Power amplifier and SMA antenna. This allowed you to use the wireless communication up to 1000 meters! (No barrier)
Frequence: 2.4GHz~2.5GHz
Operating voltage: 3 ~ 3.6V Max
Current: 115mA
Multi-frequency: 125 frequency
Support up to six channels of data reception
Communication distance: up to 1000 meters (No barrier)
ESP8266 ESP-12F Serial WIFI Model ESP-12E Upgrade Remote Wireless WIFI Module ESP12F ESP12
Features: - Ultra-small 802.11b/g/n Wi-Fi + BT/BLE SoC module
Features: - Ultra-small 802.11b/g/n Wi-Fi + BT/BLE SoC module - Low-power dual-core 32-bit CPU for application processors - Up to 240MHz, up to 600 DMIPS - Built-in 520 KB SRAM, external 4M PSRAM - Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC - Support OV2640 and OV7670 cameras with built-in flash - Support for WiFI upload -Support TF card - Support multiple sleep modes - Embedded Lwip and FreeRTOS - Support STA/AP/STA+AP working mode - Support Smart Config/AirKiss One-click distribution network - Support for serial local upgrade and remote firmware upgrade (FOTA) Description: CES NEWS' Geekcreit ESP32-CAM WiFi + Bluetooth Camera Module Development Board ESP32 With Camera Module OV2640 2MP - Board & Shield Motherboard & Development Board. The ESP32-CAM has a very competitive small-size camera module that can operate independently as a minimum system, measuring the only 27*40.5*4.5mm, with deep sleep current and a minimum of 6mA. ESP-32CAM can be widely used in various IoT applications. It is suitable for home smart devices, industrial wireless control, wireless monitoring, QR wireless identification, wireless positioning system signals and other IoT applications. It is an solution for IoT applications. ESP-32CAM is packaged in and can be directly plugged into the backplane for quick production. It provides customers with a highly reliable connection method and is convenient for use in various IoT hardware terminals. Note: This product contains the OV2640 Camera Module. If you need to use the OV7670 camera, please purchase it separately. Package Included: 1 x ESP32-CAM Module 1 x Camera Module OV2640 2MP Product Specifications: ESP32-CAM Picture Output Format Rate: Test environment: camera model: OV2640 XCLK: 20
About this item 32 bit MCU, 2.4 GHz WiFi + Bluetooth LE SoC Suppor
About this item 32 bit MCU, 2.4 GHz WiFi + Bluetooth LE SoC Supporting IEEE 802.11 b/g/n and Bluetooth 5 Based on ESP32-S3-WROOM-1 8MB Flash + 2 MB PSRAM About ESP32-S3 hardware resources ESP32-S3 is a low-power MCU-based SoC that supports 2.4 GHz Wi-Fi and Bluetooth Low Energy (Bluetooth LE). ESP32-S3 has a complete Wi-Fi subsystem and a Bluetooth LE subsystem, State-of-the-art power and RF performance. S3 provides a rich set of peripheral interfaces, and supports ultra-low-powerapplications. Different security features allow the device to meet stringent security requirements. Instructions for using the USB cable The on-board USB port of the YD-ESP32-S3 core board is the Type-C interface.It can communicate with the computer and provide power. The cable can be used: USB Type A to Type-C cable or CC cable Note the distinction between the commonly used USB A port to Type-C cable that can only be charged, which cannot be used for communication between YD-ESP32-S3 and the host.
Description The HC-12 is a 100mW multi-channel wireless transceiver you
Description The HC-12 is a 100mW multi-channel wireless transceiver you can use in your projects to transmit and receive serial information. The HC-12 is a half-duplex wireless serial communication module with 100 channels in the 433.4-473.0 MHz range that is capable of transmitting up to 1 km. This project will begin by using the HC-12 to create a wireless link between two computers and end with a second article that creates a simple wireless GPS tracker.
Overview:
Core51822 is a wireless module based on nRF518
Overview:
Core51822 is a wireless module based on nRF51822 - the Multiprotocol Bluetooth® 4.0 low energy/2.4 GHz RF SoC designed for ULP (ultra low power) wirelesss applications.
Core51822 Specifications
Onboard chip: nRF51822
Communication distance (open outdoor@1M data rate): 30m
Frequency range: 2.4GHz
Operating voltage: 2.0V ~ 3.6V
Operating temperature: -40℃ ~ 85℃
Dimension (PCB): 24.5mm x 32.26mm
Expansion pinheader: all the I/Os except P0.26 and P0.27
Pinheader pitch: 2.00mm
Spacing between pinheaders on the left side and the right side: 18.00mm
Antenna: onboard antenna
NRF51822 Features:
2.4 GHz multiprotocol RF transceiver
ARM® Cortex™-M0 32 bit processor
128 bit AES HW encryption
128kB flash & 16Kb RAM
Programmable Peripheral Interconnect (PPI)
Digital interfaces: SPI, I2C, UART
10 bit ADC
Programmable output power: -20 to +4 dBm
Independent application development and protocol stack
Fully compatible with NRF24L series
Pinout compatible with NRF51xxx series
Global separate power management
Operating voltage: 1.8 V ~ 3.6 V
Applications:
Wearable devices
Bluetooth intelligent application
Mobile phone accessories
RFID labels
Smart home appliances
Industry control
Data acquisition system
Revision History
2015.06, Core51822 upgrades the onboard chip to Rev3, features RAM 16K,
supports higher version SDK, and all the demo codes are still compatible with the Rev2 ones.
Package Include:
1 x Low Power Consumption BLE4.0 Bluetooth 2.4 GHz Wireless Module NRF51822
Description
Chip board ENC28J60/SS.
The board 25MHZ
Description
Chip board ENC28J60/SS.
The board 25MHZ crystal.
The network interface board HR911105A.
3.3V power supply pin.
Size: 48.8 (mm) x 18.5 (mm).
Size: 18*18*2.8 (±0.2)mm- SPI Flash: 1MB-The type of interface: UART/GPIO/ADC/PWM-The quantity of I
Description
ESP8266 is a highly integrated chip designed
Description
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
Instruction & Steps of How to use:
1. Download the Arduino IDE, the latest version.
2. Install the IDE
3. Set up your Arduino IDE as: Go to File->Preferences and copy the URL below to get the ESP board manager extensions: http://arduino.esp8266.com/stable/package_esp8266com_index.json Placing the http:// before the URL lets the Arduino IDE use it...otherwise it gives you a protocol error.
4. Go to Tools > Board > Board Manager> Type "esp8266" and download the Community esp8266 and install.
5. Set up your chip as:
Tools -> Board -> NodeMCU 1.0 (ESP-12E Module)
Tools -> Flash Size -> 4M (3M SPIFFS)
Tools -> CPU Frequency -> 80 Mhz
Tools -> Upload Speed -> 921600
Tools-->Port--> (whatever it is)
6. Download and run the 32 bit flasher exe at Github(Search for nodemcu/nodemcu-flasher/tree/master/ at Github)
github.com/nodemcu/nodemcu-flasher/tree/master/Win32/Release
Or download and run the 64 bit flasher exe at:
github.com/nodemcu/nodemcu-flasher/tree/master/Win64/Release
7. In Arduino IDE, look for the old fashioned Blink program. Load, compile and upload.
8. Go to FILE> EXAMPLES> ESP8266> BLINK, it will start blinking.
Description:
Brand new and high quality.
Maximum op
Description:
Brand new and high quality.
Maximum operating speeds up to 2Mbps, GFSK modulation efficiency, Anti-interference ability, Particularly suitable for industrial control applications.
125 Channels, Multi-point communication and frequency hopping to meet the communication needs.
Built-in hardware CRC error detection, Multipoint communication address control.
Low-power 1.9 ~ 3.6V, only 1uA on Power down mode.
Built-in 2.4Ghz antenna.
Available software to set the address, only received local Address when output data(Provide interrupt instruction), can be directly connected to a variety of microcontrollers, Software programming is very convenient.
Built-in voltage regulator.
Standard DIP Pitch Interface for embedded applications.
Size:3.3cm x 1.4cm - 1.29inch x 0.56inch.
Package Includes:
1pc NRF24L01+ Wireless Transceiver Module
NRF51822-02 module is a data transmission module, the BLE Blu
NRF51822-02 module is a data transmission module, the BLE Bluetooth MCU integrated SOC chip nRF51822-QAFF ,the internal integration of the underlying low power Bluetooth 4.0 standard protocol, module interface is the standard UART interface, built-in interrupt output prompt, When the module receives data from a pair of Bluetooth transmission, it outputs a high level signal, which is used to notify the external device, At the same time, the module is equipped with hardware.make enable foot,In the absence of data transfer,can be set to make the foot high,to disable the function of serial data transmission, thereby reducing the power consumption of the system.
Characteristic:
Low power BLE4.0 Bluetooth single mode chip
The integration of the standard BLE4.0 protocol stack
Standard UART (TTL) interface, can be directly connected to the external MCU serial or serial port
9600 or 38400 optional hardware serial baud rate, the default is 9600
Interrupt output prompt
Hardware enable control
Operating distance: 0~20 m,class II
Power supply voltage: 3.3V
The module comes with a PCB antenna, and can also use the external antenna
Module size: 16.5*28.8mm
Application case:
Short distance automatic data acquisition
Industrial remote control and telemetry
Handheld, handheld machine, POS machine
Wireless keyboard, wireless mouse, game handle
Bluetooth dimming, light control system
Intelligent home control system
Anti drop device
Bluetooth sensor
Mobile phone accessory products
Description:
Type : Voltage Regulator
Condition : N
Description:
Type : Voltage Regulator
Condition : New
Application : Computer
Supply Voltage : 1
Dissipation Power : 1
Model Number : MW
is_customized : Yes
Wireless Module : SMD NRF24L01