Input Devices

by Dhruv Saidava

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  3. Week 13

Fab Academy Tutorials & References

Assignment

Measure something: add a sensor to a micro controller board that you have designed and read it

Distance Sensor with Atty Tiny 44

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Process of Designing Input for Ultrasonic Sensor.
  • Adding components in to schmetic
  • makeking connection according to pins
  • Switching to Board
  • Arranging components and routing it.
  • after routing check for DRC rule
  • Export it to PNG Image

Photos and process is showed in photos.

Output

FAB-isp & Ultrasonic sensor measuring distance.

Milling and Designing : First attemp failed



Circuit is Led blinking by Thermister Input.
I want to blink LED at rate of temp changes so i selected thermistor and made a small input which connected to LED for its value change

  • After Milling few line were joint was not milled according to PNG so it was needed to cut.

Soldering of PCB

Uploading Program by Arduino ISP

First we have to select Arduino as ISP
Go to File > Example > Arduino ISP
Now remove comment form line we need to run that line in upload. ( Removing only slash /)

Some Quick Points

  • Check Dimension of Board Before Milling ( I try to used board which are left over so we can save material)
  • After Milling Cross Check with PNG file ( Sometime few lines are connected which can be separated by Cutter use gloves for safety)
  • L shape Header Pins connection can touch the board (I faced that issue so i had to remove headers clean PCB under them with cutter and again re solder it)

Attempts

Attempt 1 Failed


Fab ISP & Ultrasonic Sensor with



Done it Again as final year project Checking Distance by Ultrasonic sensor which controls two Servo motor for navigation.

Files