Arduino A Mysterious Box- Ultrasonic Range Finder  AS a chance of new relocation of our office at that time we thought of this project to measure the distance of our furnitures and the area of the room for perfect placement of furnitures. For this project, Arduino Nano 328, is very important as our brain of rangefinder and our rangefinder's body, then you could insert Crowtail-Nano Base Board onto it, next we could directly plug other modules onto baseboard by using Crowtail cables one by one. Finally upload the attached files and put the library files into your Arduino library first, then upload the program into your Arduino nano, you could try it.(Welcome to click the title or the picture to view the details) Follows show materials you need for this project ①4 Pin Crowtail Cables (5 PCS) ②Crowtail- I2C LCD ③Crowtail- Ultrasonic Ranging Sensor ④Crowtail - Base Board for Arduino Nano ⑤Nano 328(Arduino Compatible) Smart WIFI Video Car( Arduino control ) WIFI technology is widely used everywhere nowadays. And we got an idea to fully utilize this technology to control our video car which is a different and special robot car based on Arduino.You can control it to obtain images of the surrounding environment by the camera, and synchronous upload video to your Android client. At the same time, you can control it with your android app conveniently and simply. we add a pan-tilt for controlling the camera to provide more wider view range of the car.(Welcome to click the title or the picture to view the details) Follows show materials you need for this project ①Battery Holder ②Crowtail- Pan- Tilt ③4WD Mobile Platform for Arduino Smart Robot Car ④USB Camera ⑤Crowtail- WIFI Module ⑥Crowtail- Motor Base Shield ⑦Crowduino Uno-SD V1.5 3 Electric fingerprint lock- Arduino compatible When you have something required of high confidentiality and security, you can have a try to take advantage of fingerprint to unlock electronic lock, by a specific person's fingerprint input to complete the unlock process. First, you need an electric lock that could be controlled by the current, next we need a fingerprint sensor to record the fingerprint. A main controller is necessary too. At last some interactive modules like button, buzzer and adjustable infrared sensor are needed to make it more smart.(Welcome to click the title or the video to view the details) Follows show materials you need for this project ①Crowduino Uno-SD V1.5 ②Crowtail- Fingerprint Sensor ③Electromagnetic Lock ④Crowtail- Base Shield for Arduino ⑤Crowtail- Adjustable Infrared Sensor 3-50cm ⑥Crowtail- Button ⑦Crowtail- Buzzer ⑧USB Booster Cable (DC5V To DC9V/DC12V) ⑨Crowtail- Relay ⑩Standard DC Barrel Power Connector Arduino Fingerprint Lock Do you want to open the door without keys conveniently? You could make one fingerprint lock to realize it. Related to the third project,it works the similar principle.(Welcome to click the title or the picture to view the details) Follows show materials you need for this project ①Crowduino With ATMega 328 V1.1 ②Fingerprint Sensor ③Tower Pro Super Strong Metal Core Servo MG-995 ④5V-500mA AC/DC USB Power Adapter ⑤9V-1A AC/DC Power Adapter with Cable Arduino Automatic Temperature& Humidity Controller for Pets The days get colder and colder steadily, do you want to create a house with floor heating and air conditioning for your pets ? Basically, the temperature& humidity sensor reports to the Crowduino how cold it is now. If the Crowduino “thinks” it is too cold, then it will open the thermal tablet to warm the hamster or the ultrasonic nebulizer to begin the air humidification.(Welcome to click the title or the picture to view the details) Follows show materials you need for this project ①Crowduino With ATMega 328 V1.1 ②Temperature & Humidity Sensor Pro(AM2302) ③LCD Keypad Shield For Arduino ④2-Channel Relay Module-10A ⑤Ultrasonic Nebulizer ⑥Screw Shield