This is the USB to Serial DB9 Male Adapter with Cable. USB to DB9 Male conversion cable for USB and serial devices lets users easily connect serial devices to a laptop/desktop with USB port. It offers features such as Plug and play, hot-swappable, etc.

Type-C USB 5V 1A Step-Up Boost Converter Power Bank Charging Module with Charging Protection is a great Step-up Module with 5V input, and output 5V for many digital devices, so this is really a great module for designing a portable charger.

3.7V to 9V 5V 2A 18650 Lithium Battery Charge Discharge Integrated Module can manage battery charging and discharging and also has a built-in boost converter to boost the voltage to match load conditions.

This Power Supply Module voltage source is a switching source, so you do not have to worry about fluctuations in the voltage grid. HLK-10M12L Open Frame 12V 0.8A 10W AC DC switch power supply module is designed to be mounted on the PCB and is the ideal solution to power pads that you take. It is widely used in a smart home, automation and control, communication equipment, instrumentation, and other industries.

This MAX4466 Electret Microphone Amplifier with Adjustable Gain Module is best used for projects such as voice changes; audio recording/sampling, and audio-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x.

Win8,win7,winxp,win2k,wince,linux,mac,system, 32-bit, 64-bit system, driver support.

The USB output converter module has short circuit protection, 5A current automatic protection.

DC 5V Industrial CH340 USB to RS485 Converter Communication Module TVS Transient Protection Communication Module

It supports the multipoint, each converter allows the RS485 interface device to connect 32 and comes with TVS tube Interface Protection and also with USB self-recovery protection.

This is an industrial USB to RS485 converter with the original FT232RL and SP485EEN inside. It features embedded protection circuits such as lightning-proof, resettable fuse, ESD protection, and TVS diode, etc. It’s pretty small in size.

This USB-TTL converter is based on CH340G USB to Serial TTL converter chip. The module can be used for 3.3V logic level signals, the and has the option to switch from 5V to 3.3V logic level using a 2 pin shunt supplied with the module.

Serial Converter CP2102 USB 2.0 to UART TTL 5PIN Connector Module The CP2102 is a highly integrated USB2.0 full-speed function controller with a built-in USB transceiver, and crystal oscillator, EEPROM, and asynchronous serial data bus (UART) to support a full-featured modem signal without the use of any external USB devices. CP2102 USB-UART switching circuit by the driver into the PC's USB port virtual COM port expansion to achieve the purpose, similar to other works.

You can supply it with single-cell LiPO or an AA size batter or others. Two AA batteries can output a current of 500 ~ 600MA, a single AA battery power supply can output 200ma current supply, great for mobile phones camera, single-chip, digital products supply.

This is a buck module that is used to charge a phone via a USB port. The module supports Quick Charge 3.0 and accepts input from 12V to 24VDC. The module is based on the IC IP6505, which is a step-down converter with an integrated synchronous switch.

TTL to RS485 module, RS485 to TTL signal, single-chip serial port, UART, lightning protection hardware, automatic flow direction control The power supply of this product is wide voltage (3.0V ~ 30V), which realizes the compatibility between 3.3V system and 5.0V system, and both 3.3V and 5.0V signals can be matched. This product is equipped with wiring terminals and silicone wire, used for direct wiring. All imported chips are used.

HEXIN RS232 to RS485 serial port Data interface adapter Converter . It has electronic Interface At the side of RS-232 is a DB9 female(hole-type) connector and  at the side of RS-485 is a DB9 male (needle-type) connector  with connection board. It has Transmission Speed of 300-115200 bps.Common wire, doule wire, UTP or Shielding Line are used as a transmission Media.

SOP8 IC Programmer Test Clip with Welding Wire is perfect for reading or writing EEPROMs. This clip allows for in-circuit programming of SOP8 chips.

This is the PL2303 USB UART converter Board. This is a great little tool for embedded systems that require a serial connection to a computer. The board can simply attach to a USB-C bus and will appear as a standard COM port.

The module also provides a buffer between the CAN controller and the high-voltage spikes that can be generated on the CAN bus by outside sources like EMI, ESD, electrical transients, etc.

This is MCP2515 CAN Module TJA1050 Receiver SPI 51 Single Chip Program Routine Arduino with this module, you will find easy to control any CAN Bus device by SPI interface with your MCU, such as Arduino UNO and Compatible with Arduino based micro-controller projects.

The RS232 to TTL 5V Signal Converter Module is a professional module for projects requiring PC/Laptop RS232 interface to 5V TTL logic. This module converts signals between RS232 voltage levels and TTL voltage levels. It is bi-directional, where TTL signals are converted to RS232 levels and RS232 levels are converted to TTL levels. It is ideal for use in pc interfacing, microcontroller based projects, robotics, or for experimental and educational purposes.

This converter lets you send and receive data using the RS485 network from your Arduino/microcontroller. Similar to Serial TTL and RS232 interfaces, the RS485 lets you transfer data between microcontrollers and devices but with extra features! RS485 is an industry standard protocol for data transfer and provides numerous advantages.

The USB ASP AVR Programming Device for ATMEL processors is a USB in-circuit programmer for Atmel AVR controllers. This  ATMEL Processors simply consists of an ATMega88 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver; no special USB controller is needed.

The USB TO UART TTL 5V 3.3V FT232RL Download Cable To Serial Adapter Module is a basic breakout board for the FTDI FT232RL USB to serial IC, Revision 2. The pinout of this board matches the FTDI cable to work with official arduino and cloned 5V Arduino boards.

CH341 is a USB bus convert chip, providing UART, printer port, parallel and synchronous serial with 2-wire or 4-wire through USB bus. In UART mode, CH341 provides alternant rate control signals such as serial transfer enable, serial receive in ready etc. It also supplies common MODEM communication signal in order to expand UART for
computer or upgrade common synchronous interface device to USB bus directly.

This is the CP2102(6-pin) USB 2.0 to TTL UART serial converter module. This is a great little tool for embedded systems that require a serial connection to a computer. The board can simply attach to a USB bus and will appear as a standard COM port.

ATtiny85 based microcontroller development board come with the USB interface. Coding is similar to Arduino, and it uses the familiar Arduino IDE for development. This is a digispark clone.