PCB Projects

Computers have grown to be a vital part of human ecosystem. Mobile phones have also evolved to provide increased computing power and applications over time. Also we have a generation of smart watch era with watches evolving to show fitness data and other details along with time.

Well we hereby take smart watches to the next level by developing a smart watch that is literally a wearable computer. A touch screen based computer that is not at your home, not in your pocket but right on your wrist. It also has an integrated contactless temperature sensor for measuring anyone’s temperature anytime. Also we add a contactless lidar distance sensor to it which also allows user to measure anything anywhere.

The wearable computer provides following features:
• Ability to get the power of a personal computer right on your hand
• Touch display for easy interaction
• Internet connectivity on Smart watch
• Ability to google search from anywhere
• Contactless temperature sensing anywhere
• Contactless and Accurate distance measurement using Lidar

The wearable computer is developed using a Raspberry Pi controller with a battery, touch screen display, lidar sensor, temperature sensor all together mounted in a compact way over wrist strap. This makes a smart, easy to carry wearable computer.

The display is used to interact on the computer. We hereby install linux operating system on a raspberry pi controller. This allows the user to use all linux features including file storage and retrieval, tools and browser on the raspberry Pi. We integrate the touch screen display to allow user to easily interact with windows system. We use internal raspberry pi wifi module to connect with the internet.

Vending machines have long served as an automated dispensing machines that can dispense products on accepting money. Vending machines look simple but have a well designed mechanism behind the scenes that makes vending look so easy.

We here study this mechanism by developing a coin operated cola vending machine with 4 slots. This machine can dispense 4 different types of cola cans which are of different value.
The system makes use of 4 motors, spring coils, a coin detector, lcd display, controller circuitry along with the machine frame to develop a vending machine. The machine will be capable of providing user the choice of selecting the cola, asking for respective price and dispensing the product on detecting the money.

The system consists of 4 slots each having a spring coil specially designed to fit cola cans. Each coil is connected to a motor that is used to rotate the coil on respective product demand.
The machine owner can feed the cola cans into the system by entering a password. Only on entering right password, the owner can open the machine. Once all products are added into the trays the machine is ready for operation.

Once the user approaches the machine he/she can see a list of cola options displayed on the mini LCD display. The user can use the keypad to select the cola needed. On selection the system displays the price of the chosen cola. The user now needs to insert respective coins in the machine as per the amount mentioned. On inserting wrong coins the system returns them. On detecting right amount paid, the system now accepts the payment.

The controller now operates the motor of the respective cola slot to drop the can. Rotating the motor of respective slot, the coil motion pushes the cans outwards until the outermost can falls into the user bin.

Theo Jansen is a renowned Dutch artist best known for his Strandbeest (Dutch for beach animals). These kinetic sculptures are designed to be a fusion of art and engineering. Inspired from nature and bearing an uncanny resemblance to the movement of animals, these mechanisms are built using an array of triangles and connecting links that convert the rotation of an axle into the stepping motion of six or more limbs. Moreover, since these mechanisms mimic the movement of animals, they are far more efficient compared to wheels when operating in sand and on rough terrain.
Designed to mimic the movement of arachnids, this eight-legged spider robot builds upon the ingenuity of the Theo Jansen Mechanism. This system uses a dual motor setup paired to six gears which in turn actuate the eight legs in synchrony. Its remote-control operation enables the operator to control this robot wirelessly. This system also has four 12v LED indicator lights on either side to signal its direction of movement.

System Features:
• Uses Theo Jansen mechanism to mimic the motion of a spider
• Wheel free Movement
• Dual Motor Mechanism
• Uses 6 Gears to actuate the 8 Legs
• Wireless Remote-Controlled Operation

The spider robot makes use of a kinematic motion that is run by theo jansen linkages. This allows to turn the rotational motion of a DC motor into a step motion that mimics animals. The robot makes use of 2 x DC motors o dive the mechanism. The motors are mounted on 2 opposite sides of the robotic chassis or main frame. The drive produced by the motors are used to drive a gear which in turn is connected to 2 more hears. The 3 gears are used to drive a combination of 8 legs.