New ESP32-S3 N16R8 Development Board with USB Camera Module Kit 720P 1280*720 1MP 65 Degrees for Android Win 10 11 ESP32S3 IOT

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RS485 ESP32-S3 N16R8 Development Board POE Power 3DBI BT WiFi Module AI Industrial Internet of Things W5500 ETH PCF8563 TF USB

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ESP32-C3-MINI-1 2.4G Wifi BT BLE5.0 Module for Smart Home Internet of Things N4 4MB Flash 85°C ESP32 C3

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RP2040 Development Board Module for Raspberry Pi Pico Micropython Core Main Control 264KB RAM 4MB 16MB Flash

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NRF52840 Development Board Module for Nano V2.0 with Bluetooth 5.0 Support Charge 3.7V Manage MINI USB Type-C 64MHz

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MINI ESP32-H2 Development Board Module for Microcontroller Programming Learning USB Type-C ESP32 H2 

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RP2350 Development Board Module for Raspberry Pi Zero MCU Dual Core 150MHz 520KB SRAM 2MB Flash UART I2C SPI PWM USB1.1 TYPE-C

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MINI D1 PRO Upgraded ESP8266 Development Board Wifi Module with IPEX Port 16MB Flash D1-MINI 16Pin USB Micro Serial Port CP2104

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MINI USB TO TTL Serial Downloader Converter UART STC Download USB Micro Type-C CP2102 6Pin UART STC 300bps~1Mbps

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USB TYPE-C To TTL OTG Serial Communication Module USB Transform UART for STC STM32 3.3V 5V USB TYPE C

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Voice Control Development Board AI Voice Recognition Module V20 Language Control Switch Support UART PWM IO Output DC5V HLK-V20

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TB6612 Motor Driver Module Balance Trolley Driver Module High Performance Dual Drive 16PIN TB6612FNG

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5.8GHz Radar Modules LD016 Human Motion Sensor 0.1-30m range Distance Time Detection 5PIN Low Power Supply

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ESP8266 ESP-01 ESP-01S USB Downloader Module for Arduino CH9102F CP2104 ESP LINK V1.0 Firmware Burning Tool ESP 01S

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2.4G WiFi Directional Image Transmission Antenna 10dB High Gain 2.35-2.55GHZ 10W Directional linear polarization SMA-K Connector

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Note:keil pop-up "The connected J-Link is defective,Proper operation cannot be guaranteed......"The driver version is too high. The solution is as follows:* Copy the "JL2CM3.dll" and "JLinkARM" files to the keil/arm/segger directory to replace the original files and restart the keil software.Please contact us if you need these documents. There are three ways to manually update the KEIL DLL Method:1: Upgrade the J-link program that comes with Keil.2: Use the J-link driver that came with the previous version of Keil to replace the current one, that is, replace the... \Keil\ARM\Segger folder for the old version, so that the J-Link driver is also an old version of the inside, it will not prompt the J-Link update!3: Uninstalled segger, downloaded the newer driver and reinstalled it, and copied jlinkarm.dll from segger/jlinkarm_v440 directory to keil/armgger directory. Used the MDK again, prompted for an upgrade, OK'd the upgrade, but this time after the upgrade, jlink did recognize it. jlink enable disable serial port:Enable the virtual serial port: jlink commander command console enter the command vcom enableClose the virtual serial port: jlink commander command console enter the command vcom disableAfter inputting the command and unplugging the device manager again, the COM port will come out!Enable VCOM (virtual serial port) functionEnable VCOM (virtual serial port) function! Make sure your jlink is V9 or above.Enter vcom enable to turn on the virtual serial port (last power-up effective)If the connected probe does not show up, the connected probe is not enabled.If the connected probe does not support vcom functionality, follow these steps1. input power on2. enter power off3. type vcom enableThe following steps can be usedPin 5 = J-Link-Tx (out), Pin 17 = J-Link-Rx (in)Pin 5 = J-Link-Tx (out), Pin 17 = J-Link-Rx (in)! Note1. VCOM function can only be used in SWD mode, JTAG mode pin conflict!2. Need to connect the VTref of the jlink to the 3v3 power supply.3. vcom disable can disable vcom function.

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3D printer accessories stepper motor ultra quiet drive module TMC2209 TMC2208 ATD5833

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NRF24L01 Wireless Module Embedded Development Board 2.4G Wireless Transceiver Communication Module DIP-8 Si24R1

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LDTO-028K PVDF Piezoelectric Film Vibration Sensor with Cable Charge Amplifier Pressure Sensor Trigger Switch Module The LDT0-028K is a flexible component comprising a 28 µm thick piezoelectric PVDF polymer film with screen-printed Ag-ink electrodes, laminated to a 0.125 mm polyester substrate, and fitted with two crimped contacts. As the piezo film is displaced from the mechanical neutral axis, bending creates very high strain within the piezopolymer and therefore high voltages are generated. When the assembly dimensions is deflected by direct contact, the device acts as a flexible "switch", and the generated output is sufficient to trigger MOSFET or CMOS stages directly. If the assembly is supported by its contacts and left to vibrate "in free space" (with the inertia of the clamped/free beam creating bending stress), the device will behave as an accelerometer or vibration sensor. Adding mass, or altering the free length of the element by clamping, can change the resonant frequency and sensitivity of the sensor to suit specific applications. Multi-axis response can be achieved by positioning the mass off center. The LDTM-028K is a vibration sensor where the sensing element comprises a cantilever beam loaded by an additional mass to offer high sensitivity at low frequencies.

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TTL to RS485 Conversion Modules Auto Flow Control Board RS485 to TTL Signal Microcontroller Serial UART

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D1 R32 ESP32 Development Board BT Wifi Module 4MB Flash USB Micro 53MM*68MM

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ESP32 Development Board WIFI BT Module for USB Dongle Hardware Key 4MB Flash CH343P MINI USB Flash Disk Tools

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New ESP32-S3 N16R8 Development Board BT 2.4G Wifi Module for Arduino 8MB PSRAM 16MB FLASH with WS2812 LED CH340 Type-C ESP32S3

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BT 2.4G Wifi Module ESP-32 Development learning Board with 18650 Battery Holder ESP32-32 CP2102 Serial USB Micro

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2.4G WIFI Module Development Board for Arduino DIY Internet of Things NodeMcu V3 USB Micro CH340 CP2102 CH9102X Serial ESP8266

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Voice Sound Module for Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card DY1703A

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MINI ESP32-S3 Development Board BT 5.0 Wifi Module for Internet of Things RISC-V 23.5mm*18mm Low Power 18Pin 4M Flash ESP32 S3 

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USB to TTL Conversion Module USB 2.0 to RS485 Converter FT232RL Chip TVS Tube USB Self-recovery Protection 

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RT9400 POE PD Power Supply Module AF Standard 13W 5V Features： ·IEEE802.3af compliant ·Input voltage range 36V to 57V ·Integral high efficiency DC/DC converter. ·Low output ripple and noise ·High performance with low price ·Short-circuit protection ·Adjustable Output ·Optional multi-voltage output 3.3V 5V 12V 24V ·Transformer isolation  ,1500V isolation (input to output) ·Easy to use, with a minimum number of external components. Applications： ·IP Cameras ·Wireless access point ·Security and alarm systems ·VOIP telephone ·Point of sale network terminal equipment Description： The RT9400 series of modules are designed to extract power from a conventional twisted pair Category 5 Ethernet cable, conforming to the IEEE 802.3af Power-over-Ethernet(PoE) standard. The RT9400 signature and control circuit provides the PoE compatibility signature and power classification required by the Power Sourcing Equipment (PSE) before applying up to 15W power to the port. The RT9400  provides a Class 0 signature. The DC/DC converter operates over a wide input voltage range and provides a regulated output. The DC/DC converter also has built-in short-circuit output protection.

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MEGA2560 R3 Development Board MCU Module for Arduino Module Improved Version USB Type-C CH340G ATMEGA2560-16AU

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MINI ESP32-C3 Development Board 2.4G Wifi 4 BT Module with 0.42 Inch OLED Display 4MB Flash Ceramic Antenna USB Type-C ESP32 C3  

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USB to TTL FT232RL Conversion Module USB Transform Serial Adapter Download Converter TYPE-C Port 3.3V 5V 6Pin  

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LM-2596 Multi-Circuit Switching Power Supplies Module 3.3V 5V 12V ADJ Adjustable Voltage Output Power Modules LM2596

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WT32-ETH01 Embedded ESP-32 Wifi BT Module Serial to Ethernet Transmission Wireless Module ESP32-32 WT32 ETH01

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BT 4.1 Audio Emitter Transmitter Module Board Stereo Sound Frequency Emission USB Sound Card to BT Module

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ESP32-WROVER-DEV Development Board 2.4G Wifi BT Module 4MB Flash 4M PSRAM Support OV2640 OV7670 Camera Modules ESP32 CAM CH340C

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ESP-02S Serial Wireless 2.4G Wifi Module Transceiver for Smart Home Industrial IoT 1Mbit Compatible ESP8266 ESP 02S

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38Pin ESP32S V1.3 Developments Board for Internet of Things Smart Home Wireless 2.4G WiFi Bluetooth with IPEX Port ESP32-S CH340

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LD2450 24GHz Human Motion Trajectory Tracking Sensor FMCW Wave Radar Induction Module Target Positioning 6M ASCII Output

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ESP8266-12F WIFI Module for Internet of Things Development Board Serial 22Pin WIFI ESP8266 12F

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ESP32 S3 N16R8 Development Board with 1.54 Inch TFT Display Speaker Expansion Adapter Kit for DIY AI Type-C Wifi Module ESP32-S3

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8 Bit WS2812 RGB Light Ring Development Board 5050 Smart Full-Colour RGB LED Learning Module DC4-7V

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ESP32-S3 N16R8 2.4G Extend Wifi BT Module with Dual-Core Low Power MCU Internet of Things 8MB PSRAM 16MB Flash ESP32-S3WROOM-1  

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2.4G WIFI Bluetooth Module Development Board 30Pin 38Pin Micro Type-C ESP-32 Ultra-Low Power Consumption Dual Core CP2102

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MINI ESP32-S3 Development Board for Arduino 2.4G Wifi BT Module Original Chip ESP32-S3FN8 8MB Flash 28Pin Type-C ESP32S3

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