This week's assignment is to propose a final project that integrates the range of units covered below:
a device which sends ultrasonic signals from it and when the signal reflects back, the user gets a tactile (vibratory) feedback on his hands thereby giving him a clear idea about the obstacles on his path. It is a compact device which can be held in the hand and the frequency of the vibration felt on the hand increases as the person comes closer to the obstacle.
The device can be switched on and off at will and it is so compact that nobody would know that you are walking with the help of a device.
There could be other products on the similar lines. I need to be mindful of this fact and strive to come up with better features to enhance the device further in the future.
I did a thorough research. There are present only the blind stick of the navigation of blind peoples.But the navigation is limited . The distance where the stick reaches they can sense.
After this presupposition, I tried to do something of different and newest
With the research I have done this week I will have to have at least these many items
The components will be sourced mainly from the fablab except Ultrasonic Sensor (HC-SR05)and Vibrating Motor can be bought from the local electronic component dealers itself.
the entire material cost for the project should be below 500 rupees. The major cost is caused by the microcontroller.
Material:
Components:
Physical parts:
Electronic component:
I will need to use laser-cutter & 3D printer for making frame and body . Will use the PCB miller for milling the circuit boards. Vinyl cutters for branding by having logos cut out.
Tasks to be completed include milling and programming boards, and a few more...
Design works: 28, 29, 30 of May
Circuit Milling and stuffing: 31st May
Programming the board: 1st June
Computer-Controlled Cutting: 2nd June
Composites: 3rd June
Finishing works and touchups: 4th to 8th June
Documentation works and other remaining works: 9th June to 22nd June
I will not have a lot of time. Therefore, I think that I will make a preliminary design evaluation with many manual sketch and rendering. I will take video rendering and assembly instruction to be sure not to make mistakes. Then, I will calculate the kerf with three principal typologies of joints, in this way, I will be able to modify all 2D drawings for the laser cutter.About the electronic components, I will try to use and make the code for the ultrasonic sensor.