LED BLINKER

From UCLA IEEE OPS
Jump to: navigation, search

Due Date

Breadboard: October 25, 2018

Solder: October 31, 2018

About the Project

If you have never soldered before, you can get a quick tutorial here: How to Solder

In this project, you will be making an LED light up! The first step will be to create the circuit from the schematic on your breadboard. Do this by using your knowledge of breadboards, and bending your component leads 90 degrees and sticking them in the breadboard. After you've done that, bring it to an officer to look at and they'll ask you some questions about it. Then, you'll solder your circuit to a perfboard. Keep a look out for sign up times for soldering with supervision! In summary, this project entails:

  • Breadboarding the lighting up an LED
  • Soldering this

For this project, you will need to pick up resistors from the OPS Parts Drawer which is above the OPS Kit drawer in the IEEE Lab. The materials you will need for the breadboarding portion are:

  • Breadboard
  • Battery
  • JST connector
  • LED (white/green/red/blue)
  • Resistor (from OPS cabinet on the wall, no where else!)

Please hold on to these components for the soldering portion of the project!


Slides: https://docs.google.com/presentation/d/1UpyU5qLMTIgDtMDBkq9CGz9JT-MZ4gQVW8FJmqpywI4/edit?usp=sharing

Series & Parallel

For this project, you need to know that the voltage of components add in series, and the current through several elements in series is the same!

Parallel vs. Series values

Tips (READ THESE)

  • Use the white JST connectors in your box to connect the battery to the breadboard!
  • Ohm's law uses SI units for current - Amperes, voltage - Volts, and resistance - Ohms
  • Set up the circuit before you put the battery in
  • The red wire of the battery represents the 3.7 V power, while the black wire represents the 0 V battery
  • Polarity is defined as the orientation of a component. For an LED, it basically means describing which side is positive and which is negative
  • If you're not sure about your circuit, show us before you put the battery in!

(If you are connecting the two leads of the battery to the two leads of the LED, you're doing it wrong)

  • Please only use the OPS section for getting components, do not use the huge wall of resistors!

Schematics

LED Part 1 Schematic

Follow the GIFs on the Google Slides for soldering this project.

Datasheets

(Remember, on the data sheet you are looking for the operating current/voltage needed to turn on the LED)

White LED: https://cdn-shop.adafruit.com/product-files/754/P754B_datasheet_FD-5TW-1.pdf

Yellow LED: https://www.mouser.com/datasheet/2/216/WP793YD-23292.pdf

Red LED: https://www.mouser.com/datasheet/2/216/WP793ID-23138.pdf

Green LED: https://www.mouser.com/datasheet/2/216/WP793GD-52917.pdf

^ choose one please! The datasheets also will have a graph relating the current and voltage of the LED, which can help with your calculations! You are going to need two values from the datasheet for your calculations.

Soldering the Blinker

How to Solder

DO NOT SOLDER ACROSS COMPONENTS


This part of the project involves taking your breadboard design and actually implementing it! That means you will be using the same exact components, except you'll use a perfboard instead of a breadboard. The perfboard is the brown board you have in your OPS kit. For this project, try to use a smaller perfboard if you have one, or confine your perfboard design to a small space in the corner. This is generally good practice for soldering; you don't want to have more work than needed, and you need to be space efficient!

Key Things to Note and Pay Attention To:

  • The temperatue of the iron should be between 600F and 700F, or around 650F.
  • Turn off the iron when you are done with the station.
  • Only start soldering when the green light flashes on and off repeatedly, indicating that it has reached the set temperature.
  • Use the exhaust vent when soldering always to remove the fumes from the burning metal
  • Do NOT solder anything with the battery attached!!!
  • If you don't think something is right, don't try anything weird, tell an officer like Bruno and Kaleb immediately.
  • Clean your workspace when you are finished, and don't forget to turn off the soldering iron!!
  • Just to emphasize: CLEAN YOUR WORK AREA AND TURN OFF THE IRON BEFORE YOU LEAVE, CAPICHE??


Oh yeah....

WASH YOUR HANDS AFTER YOU'RE DONE SOLDERING!!!