SQR117 - 220V AC Square Siren Siren is a noisemaking device producing a piercing sound of definite pitch. This is a SQR117 - 220V AC Square Siren which can be used in your project for alarm purpose Though is called “Mini Siren” there is nothing mini about it the sound is ear-deafening and turn this ON at your own risk. If you are tired of an old buzzer and want something with loud noise then this is the siren for you. Applications: Security appliances Household appliances Electronic alarm

SQR117 - 24V DC Square Siren Siren is a noisemaking device producing a piercing sound of definite pitch. This is a SQR117 - 24V DC Square Siren which can be used in your project for alarm purpose Though is called “Mini Siren” there is nothing mini about it the sound is ear-deafening and turn this ON at your own risk. If you are tired of an old buzzer and want something with loud noise then this is the siren for you. Applications: Security appliances Can be used in Bicycles Household appliances Electronic alarm

Square Force-Sensitive Resistor FSR 400 series is part of the single zone Force Sensing Resistor family. The model 406 FSR is a single-zone Force Sensing Resistor optimized for use in human touch control of electronic devices such as automotive electronics, medical systems, and in industrial and robotics applications. FSRs are two-wire devices. They are robust polymer thick film (PTF) sensors that exhibit a decrease in resistance with increase in force applied to the surface of the sensor. It has a 39.6mm square active area and is available in 4 connection options. This FSR 406 force sensor will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1M?. This FSR can sense applied force anywhere in the range of 100g-10kg. Two pins extend from the bottom of the sensor with 0.1" pitch making it bread board friendly. There is a peel-and-stick rubber backing on the other side of the sensing area to mount the FSR. Also check Spectra Symbol 12.7 mm Circular Force sensor . It is a force-sensitive resistor with a round, 0.5? diameter sensing area. The resistance of this FSR varies based on the amount of pressure applied to its sensing area. When no pressure is applied, its resistance is larger than 1M?. The FSR can sense forces in the range of 100g to 10kg.

Square shaped Force Sensor Square-shaped force sensors are usually made of a spring element, such as a metal beam, diaphragm, or cylinder, that is deformed when a force is applied to it. This Force Sensor has a sensing area of 1.75 x 1.5?, sensing area and it will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1M?. This Pressure Sensor can sense force anywhere in the range of 100g-10kg and can be easily integrated with Microcontrollers, Arduino Boards, Raspberry Pi, etc. using Analog to Digital converters (ADC). Applications: Pressure-sensitive touch user interface Tactile sensor for robotic appendages Drum pad for an electronic instrument

SSR-40DD DC 3-32V Input to DC 5-200V Solid state relay This is DC To DC SSR-40DD 40A Solid State Relay Module offers an input of 3V-32V DC with an output voltage of 5V -200VDC at an output current of 40A. A solid-state relay (SSR) is simply an IC that functions as a mechanical relay. The only difference between this SSR with the mechanical relay is that there is no moving contact in a Solid-State Relay. This SSR allows us to control high-voltage AC loads from lower voltage DC control circuitry. This is achieved by using infrared light as the ‘contact,’. In short, a solid-state relay is just an IR LED and a photometric enclosed into a little box. Thus we make use of the Phototriac coupler to turn it ON and OFF. Solid-state relays offer numerous advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, as there are no moving contacts, solid-state relays switched much faster and for much longer periods without wearing out. Each one of these relays is designed with four screw terminals for use with ring or fork connectors. And enclosed in a plastic cover that slides over the top of the relay to protect the terminals. This Solid State Relay module features long service life and high reliability with reduced electromagnetic interference. Moreover, its compact size design offers users maximum simplicity. Also, read our blog on What is Relay in Electrical explaining what is it, how does it works, its construction, different types of relays, and applications. Features: Input Voltage: 3-32V DC Output Voltage: 5-200V DC Load Current: 40A Control Type: DC to DC Switching Speed: High switching speed with no noise or sparks Durability: No mechanical parts, leading to high reliability and long life Resistance: Resistant to vibration and moisture Size: Compact size for easy integration into various systems Heat Dissipation: Requires proper heat dissipation to ensure longevity Applications: Industrial Automation: Used in controlling machinery and equipment in automated production lines. Temperature Control Systems: Ideal for switching heating elements in temperature control systems. DC Motor Control: Suitable for controlling DC motors in various applications, including robotics and conveyor systems. Lighting Control: Can be used to control lighting systems, including stage lighting and traffic lights. Pumps and Valves: Used in controlling DC pumps and solenoid valves in fluid handling systems. Home Automation: Useful in home automation projects for controlling various DC-powered devices. Signal Isolation: Provides electrical isolation between control and load circuits, enhancing safety and reliability.

ST-LINK/V2 Debugger and Programmer USB The ST-Link V2 debugger and programmer is designed for STM8 and STM32 and is manufactured with PCB installed inside of aluminum alloy U disk shell. This factory firmware has been upgraded to support the full-range STM32 SWD and a full-range STM8 SWIM. This ST-Link programmer is equipped with a 500MA internal resettable fuse that provides complete protection for your expensive computer motherboard. This programmer has a programming speed rate of 9.7 Kbytes/s in low speed and 12.8 Kbytes/s in high speed. It has a red and blue LED indicator that allows users to observe the working condition of the Programmer. The ST-Link device can be used to send program code to the 32-bit STM32 ARM Cortex or 8-bit STM8 microcontrollers. It contains connections for 5V, 3.3V, SWCLK, SWDIO, SWIM, Reset (RST/NRST), and GND. With the help of the USB connector, it can connected to a computer. Note: This ST-Link Programmer will not get detected in the STM32CubeIDE as they are clones. Click here to download the Drivers.

ST-Link/V2 Programmer and Debugger ST-LINK/V2 is an in-circuit debugger and programmer for the STM8 and STM32 microcontroller families. The single wire interface module (SWIM) and JTAG/serial wire debugging (SWD) interfaces are used to communicate with any STM8 or STM32 microcontroller located on an application board. STM8 applications use the USB full-speed interface to communicate with ST Visual Develop (STVD) or ST Visual Program (STVP) software. STM32 applications use the USB full-speed interface to communicate with Atollic, IAR, Keil or TASKING integrated development environments. In addition, to provide the same functionalities as the ST-LINK/V2, the ST-LINK/V2-ISOL features digital isolation between the PC and the target application board. It also withstands voltages of up to 1000 Vrms. Note: This ST-Link Programmer will not get detected in the STM32CubeIDE as they are clones. Check out our entire range of Universal Programmer Applications: Automotive Communications Equipment Computers and Peripherals IoT Applications Personal Electronics

ST-LINK V2/V2.1 USB-C Programmer and Debugger for STM32 Microcontrollers - 7Semi The 7Semi ST-LINK V2/V2.1 USB-C Programmer and Debugger is designed for seamless development and troubleshooting of STM32 microcontrollers. Offering SWIM and JTAG/SWD interface support, it enables precise programming and debugging tasks. The upgraded USB-C connector ensures modern device compatibility and ease of use. For applications that demand additional protection, the isolated version (ST-LINK/V2-ISOL) provides galvanic isolation between the computer and the target device, safeguarding against high-voltage risks up to 1000 Vrms. Compact and reliable, this tool is ideal for both hobbyists and professionals working in embedded development environments. Features: Versatile Programming: Supports both STM32 and STM8 microcontrollers. Dual Interface: Provides JTAG/SWD for STM32 and SWIM for STM8 devices. Modern Connectivity: Equipped with USB-C interface for reliable and future-proof connections. High Voltage Protection (Isolated Version): Isolated version protects against up to 1000 Vrms voltage between PC and target board. Compact and Portable: Small form factor ideal for lab and field use. Easy Integration: Works with STM32CubeIDE, ST-Link Utility, and other popular development environments.

ST-LINK/V2 and ST-LINK/V2.1 USB Debugger Programmer with Original STM Chip - 7Semi The 7Semi ST-LINK/V2 and ST-LINK/V2.1 USB Debugger Programmer with Original STM Chip are reliable tools designed for STM32 microcontroller development. These USB-based programmers and in-circuit debuggers support both SWD (Serial Wire Debug) and JTAG interfaces, providing seamless connectivity for programming and real-time debugging. They connect easily to STM32CubeIDE or third-party development environments like Keil, IAR, and Eclipse, offering extensive support for STM32 devices. The integrated ST-LINK server ensures firmware upgradability and simplifies switching between different target MCUs through adapter boards. Designed for efficiency, they enable real-time debugging with features such as setting breakpoints, stepping through code, and monitoring variables directly. Full access to MCU memory and peripherals enhances system analysis and troubleshooting. Thanks to their compact size and robust performance, these tools are essential for both professional developers and hobbyists working on STM32-based projects. Features: USB Protection: 500mA self-recovering fuse safeguards USB ports. Reliable Memory: Built with original STM32 128KB flash memory. Dual Voltage Output: Supplies 5V and 3.3V for external devices. Virtual COM Port: Enables easy serial debugging via VCP. Firmware Updates: Supports Direct Firmware Update (DFU) mode. High-Speed Debugging: Fast output via Single Wire Output (SWO). USB 2.0 Compatible: Full-speed USB communication support. Flexible Debugging: Supports JTAG, SWD, and SWV protocols. Wide Voltage Range: Operates between 1.65V and 3.6V (5V tolerant). Status Indicator: Communication activity shown via blinking LED. Temperature Range: Works between 0°C and 50°C. ST-LINK/V2.1 Programmer Pinouts

STC-3028 Digital Temperature Humidity Controller 110-220V The STC-3028 Digital Temperature Humidity Controller 110-220V is a digital temperature and humidity controller that can be used for various applications. It has a dual display and can be used with an AM2120 waterproof sensor. The device has a temperature range of -50?~110? and a refreshing frequency of 0.5s. It can switch between cool and heat modes and has a temperature calibration feature. The device is powered by AC 220V and has a 10A relay. It comes with a sensor probe and can control temperature and humidity at the same time. The device is suitable for use in various sensor control boxes, water heaters, freezers, fans, and refrigerators. Features Dual display for temperature and humidity readings Can be used with an AM2120 waterproof sensor Temperature range of -50?~110? Refreshing frequency of 0.5s Can switch between cool and heat modes Has a temperature calibration feature Powered by AC 110-220V Has a 10A relay Comes with a sensor probe Suitable for use in various applications such as sensor control boxes, water heaters, freezers, fans, and refrigerators Applications: Home fridges Water heaters Freezers Fans Sensor control boxes Refrigerators Dehumidifiers Electronic hobby kits