Description: 

• Hall Effect switch is a high sensitivity hall-effect switch designed for high temperature operation - up to 150°C.
• The uni-polar switching characteristic makes these devices ideal for use with a simple bar or rod magnet.

Features: 

1. signal output indication
2. Single channel signal output
3. Output effective signal is low level
4. Sensitivity adjustable
5. When there is Magnetic field cutting there is signal output
6. Circuit board output switch quantity(can connect MCU directly)
7. Can be used in such occasions as Motor speed/location detecting
8. Size: 32mm X 14mm
9. There is mounting screw holes of 3mm

Specifications: 1. Model:MP1584 2. Name:DC-DC step-down module 3. Input Voltage: 4.5V ~ 28V 4. Output voltage: 0.8V ~ 20V 5. Output Current: 3A (Max) 6. Conversion efficiency: 96% (maximum) 7. Output Ripple: <30mV 8. Switching frequency: 1.5MHz (highest) typically 1MHz 9. Operating Temperature: -45°C ~ +85°C 10. Size: 22mm * 17mm (L * W ) 11. Application areas: DIY mobile power, monitor power supply, power buggies, camera power supply, car power, communications equipment supply, etc.

This module allows you to detect when sound has exceeded a set point you select. Sound is detected via a microphone and fed into an LM393 op amp. The sound level set point is adjusted via an on board potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.

The module (MicroSD Card Adapter) is a Micro SD card reader module, through the file system and the SPI interface driver, MCU to complete the file system to read and write MicroSD card. Arduino users can directly use the Arduino IDE comes with an SD card to complete the library card initialization and read-write.

The BMP180 Breakout is a barometric pressure sensor with an I²C (“Wire”) interface. Barometric pressure sensors measure the absolute pressure of the air around them. This pressure varies with both the weather and altitude. Depending on how you interpret the data, you can monitor changes in the weather, measure altitude, or any other tasks that require an accurate pressure reading.

A versatile relay board with opto-isolated input. The relay channel can drive up to 10A @28VDC

• 5V supply voltage / input signals
• Jumper to select high/low
• Equiped with a high-current relay (10A @ 28VDC)
• 2x LEDs that show the current state of the relay

The rotary encoder is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in. It’s a great device for stepper and servo motor control. You could also use it to control devices like digital potentiometers. A rotary encoder has a fixed number of positions per revolution. These positions are easily felt as small “clicks” you turn the encoder.