Project 2 (555 Blinker)

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Due Date

November 3, 2016

Extended: November 8, 2016 4pm

The 4pm deadline will be very strict as the lab will be inaccessible due to Micromouse workshops afterwards.

About the Project

In this project, you will be making an LED blink using a very similar structure to Project 1. The project consists of 3 major parts in the following order.

  • Breadboarding the blinker.
  • Online breadboarding practice.
  • Soldering the blinker to make it permanent.

Slides: https://docs.google.com/presentation/d/1ZUPXJe4SgAZg7NeM0ectDkFQG3FK1Oq0x4eHokWcZgo/edit#slide=id.g185b9d2f1d_0_59

Breadboarding the Blinker

For this project, you will need to pick up:

  • 82 Ohm resistor (R3 in schematic)
  • Either a 100 μF or 220 μF capacitor (C2 in schematic)

from the OPS Parts Drawer which is above the OPS Kit drawer in the IEEE Lab.

LED Blinker Schematic


Online Breadboarding Practice

1. Go on https://circuits.io and make an account.

2. Create a new breadboarding project.

3. In it, implement the breadboard scheme for the schematic below.

4. Take a screenshot of it.

5. Send it to either Sahil or Jiwan through direct message on Slack to get checked off!

6. Once we give you the OK, move onto the soldering portion for the LED Blinker, if you already have not. You're not soldering the schematic below. The one below is only for online breadboarding.

Schematic

Soldering the Blinker

Follow the GIFs on the Google Slides for this project.

Key Things to Note and Pay Attention To:

  • The temperature of the iron should be between 600F and 650F.
  • Turn off the iron when you leave the station.
  • If the green light on the solder iron flashes on and off rapidly, it means the iron is at the set temperature.
  • Always turn off the iron whenever you leave the station.
  • If you think something is not right, don't try weird things. Ask Sahil, Jiwan, or an officer around you!
  • Make sure you always turn off the iron whenever you leave the station.
  • Clean your workspace when you are finished! It should be cleaner than as you found it.
  • Oh yea, remember to turn off the iron and clean your area!!!