4PCS ESP32 ESP-32S WiFi Development Board NodeMCU ESP-WROOM-32 Microcontroller 2.4GHz Dual-Core WiFi Bluetooth Processor Integrated Chip CP2102
Dual core ESP-32 development board, 2.4GHz dual mode development board.There are two touch buttons, one is reset, the other is enable module to enter the halberd program mode..
The module is ESP-WROOM-32 module, the peripheral uses the USB serial port chip CP2102 to expand the micro USB interface, which can be directly debugged by a USB connected computer, and the data transmission is fast and stable..
ESP32 development board support lua program, easy to develop, support LWIP protocol, Freertos, three modes : AP, STA and AP + STA..
The module supports for NodeMCU and other development environments, which expands the range of its resources available and greatly improves the ease of learning and development. Of course, it can also be widely used in Internet of things occasions, such as home automation, wireless industrial control, wireless positioning system signal.
ESP32 is a safe, reliable, and scalable to a variety of applications,the user can cut off the power of the CPU and use the low-power coprocessor to continuously monitor the status of the peripherals or whether some of the analog values exceed the threshold..
3PCS ESP32 ESP-32S WiFi Development Board NodeMCU ESP-WROOM-32 Microcontroller 2.4GHz Dual-Core WiFi Bluetooth Processor Integrated Chip CP2102
Dual core ESP-32 development board, 2.4GHz dual mode development board.There are two touch buttons, one is reset, the other is enable module to enter the halberd program mode..
The module is ESP-WROOM-32 module, the peripheral uses the USB serial port chip CP2102 to expand the micro USB interface, which can be directly debugged by a USB connected computer, and the data transmission is fast and stable..
ESP32 development board support lua program, easy to develop, support LWIP protocol, Freertos, three modes : AP, STA and AP + STA..
The module supports for NodeMCU and other development environments, which expands the range of its resources available and greatly improves the ease of learning and development. Of course, it can also be widely used in Internet of things occasions, such as home automation, wireless industrial control, wireless positioning system signal.
ESP32 is a safe, reliable, and scalable to a variety of applications,the user can cut off the power of the CPU and use the low-power coprocessor to continuously monitor the status of the peripherals or whether some of the analog values exceed the threshold..
Maikrt Embedded QR Code Scanning Module USB and UART Serial Port Barcode Scanner Identification Module Bar Code Reader for Access Control, Locker Scan Code Payment etc
A small 1D/2D codes reader,Can be embedded in any device for scanning code to identify other items, by using the intelligent image recognition algorithm.Configurable via scanning 'configuration code',Module matching light source, Can work in the dark..
Embedded QR code scanning module is used for access control, channel gate, locker, scan code payment, etc. And other industry equipment to achieve smart project,The performance is stable and the decoding speed is very fast..
2D/QR code scanning module support linux,Android, windows and other systems, Can easily capture bar codes 1D, 2D on labels, paper, and mobile phone or computer displays,Sensitive and accurately..
USB and TTL dual interface, equipped with 9pin terminal line and USB cable, which is convenient for you to convert between UART TTL serial port and USB interface. No need to worry about the use of interface types..
After receiving our products, connect to the line, after power-on That can scan the code.
The module scans the code directly and sends the result to your host computer automatically. After receiving the data, the host computer can proceed to the next step..
DORHEA 6PCS ESP32 ESP-32S WiFi Development Board NodeMCU ESP-WROOM-32 Microcontroller 2.4GHz Dual-Core WiFi Bluetooth Processor Integrated Chip CP2102
Dual core ESP-32 development board, 2.4GHz dual mode development board.There are two touch buttons, one is reset, the other is enable module to enter the halberd program mode..
The module is ESP-WROOM-32 module, the peripheral uses the USB serial port chip CP2102 to expand the micro USB interface, which can be directly debugged by a USB connected computer, and the data transmission is fast and stable..
ESP32 development board support lua program, easy to develop, support LWIP protocol, Freertos, three modes : AP, STA and AP + STA..
The module supports for NodeMCU and other development environments, which expands the range of its resources available and greatly improves the ease of learning and development. Of course, it can also be widely used in Internet of things occasions, such as home automation, wireless industrial control, wireless positioning system signal.
ESP32 is a safe, reliable, and scalable to a variety of applications,the user can cut off the power of the CPU and use the low-power coprocessor to continuously monitor the status of the peripherals or whether some of the analog values exceed the threshold..
CERRXIAN 4 Port PCI-E RS232 Serial Adapter Card, PCI-E Serial Expansion Card, RS232 PCI Express x1 Serial DB9 COM Expansion Card for PC
GOOD CHOICE - Most new computers don't have a serial port, and most serial port cards have a lot of issues, but if you're looking for a serial port to communicate with older devices, the card works well.This is the best solution for you add 4 RS232 (DB9) serial ports, using a single PCI Express expansion slot..
INDEPENDENT POWER CHIPEST - Built-in AX99100 CHIPEST,No external power supply provides RS-232 serial port or 5v 12v DC power output through the COM of the first needle or the needle 9.Stable performance, strong compatibility, high - speed storage..
4 RS232 PORT - 4 standard external RS-232 DB9 serial ports.All serial ports support slow IrDA mode and speeds up to 115200bps,compatible with 2 UART and 4 UART..
PCI EXPRESS X1 - Compliant with PCI Express 2.0 gen1, compatible with PCIE x1, x2, x4, x8, x16 slots..
BROAD COMPATIBILITY - Compatible operating system :Windows XP/ 2003 Server/ Vista/ WIN7/ WIN8.x / WIN10 / Linux Kernel 2.6 15 and later/ Android 1.x/ 2.x/ 3.x/ 4.x/ 5.x.Perfect for connecting serial modems, POS devices, PDAs, digital cameras, printers, ISDN terminal adapters and more to your system..
The CRS309-1G-8S+ is a very compact, yet powerful networking switch.
It has eight SFP+ slots, supporting up to 10 Gbit module in each, which results in a total switching capacity of 162 Gbps and total non-blocking throughput of 81 Gbps.
The device also has dual-core 800 MHz CPU, 512 MB RAM, a management Ethernet port with PoE power input, RS232 serial port, a grounding terminal and is capable of dual boot (choose which operating system you prefer, RouterOS, or SwOS).
The compact and sleek metallic enclosure also acts as a heatsink, making this device passively cooled - no fan noise and no dust accumulation inside.
Special rackmount ears for installing unit into the standard rack are provided.
Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3 Geekstory
Optical fingerprint sensor secure your project with biometrics. This fingerprint module can be used for fingerprint collection, fingerprint registration, fingerprint comparison and fingerprint search, it's easy to use, so its perfect for any project.
Fingerprint sensor module can work with any microcontroller which with serial port: such as compatible with arduino, 51, avr, stm32, pic, arm, msp430.
Package Includes:1 X Optical Fingerprint Reader Sensor, 2 X Cable. You can enroll new fingers directly - up to 240 finger prints can be stored.
Applications: Fingerprint door locks, safes, guns, financial and other security areas.
Access control systems, industrial computers, POS machines, driving training, attendance and other areas of identity.
fingerprint payment and other financial areas.
The fingerprint moudle documentation link cannot be displayed. If you need technical documentation, please click “Geekstory”(you can find "Sold by Geekstory" under Buy Now button), in the new page, click “Ask a question” to email us.
