Getting Parts for Your Project :: ECE 445 - Senior Design Laboratory

Getting Parts for Your Project

Student groups have a budget of $50 per student as of fall 2023. This money can be accessed through your TAs CFOP number. The ways parts can be sources are listed below in order of desirability.

1. Lab Kit

Each group is issued a locker and lab kit. A lab kit should include banana plugs and a breadboard.

2. ECEB 2070 Lab

There are many parts available for free in the ECEB 2070 lab such as THT passive components, MOSFETs, and line operated DC power supplies.

3. ECE 445 Inventory

Your TA can check out parts ECE 445 stores in white cabinets at the back of the lab: link. This inventory spreadsheet has not been updated in some time. There are items on this list that may not be in the cabinets and there are items in the cabinets that may not be on this list. Use this form for checkout: link

4. Electronics Services Shop (A.K.A. ECE Services Shop)

The Electronics Services Shop is located on the first floor of ECEB near the cargo elevator in ECEB 1041. They have a large stock of THT ICs (such as op-amps), potentiometers, motors, resistors, connectors, etc. Visit them when they are open to pick up parts.

Self-Service Inventory

Recently, they have started stocking 0805 surface mount passive components, crystal oscillators, microcontrollers, and linear regulators. The microcontroller portion of your board can probably be built entirely with parts from the Electronics Services Shop.  You do not need to pay for parts you obtain from the Electronics Services Shop.

SMD Component Inventory

To obtain parts from the e-shop, please contact your TA with a list. Your TA must email the e-shop and they will collect the parts. Your TA will get an email when the parts are ready. Your TA must pick up the parts from the e-shop . The e-shop will not release the parts to you.

SMD Parts Request Form link

 

5. ECE Supply Center (A.K.A. ECE Store)

The ECE Supply Center is located on the first floor of ECEB in room 1031 near the loading dock. You must pay for parts out of pocket or with your TA's CFOP number. They stock breadboards, project boxes, jumper wires, THT LSI logic ICs, THT analog ICs, and more. This is a fantastic resource for building prototypes. You can search their catalog here: https://my.ece.illinois.edu/storeroom/catalog.asp.

6. Free Samples from Companies

It should be mentioned that companies many times are willing to provide small quantities of their products to students engaged in design projects. You might consider approaching the manufacturer directly, particularly regarding their newer products which they are interested in promoting. Don't count on success with this, but it has often been very useful.

7. MY.ECE Ordering (last resort)

You can order parts from amazon, digikey, mouser, etc. using the money provided to you by the course with your TA's CFOP number. Orders placed through this avenue must be approved by your TA through myECE. If you order multiple parts through digikey or mouser, please provide a shopping cart link. This method of ordering is best for parts that cannot be found in any of the sources listed above. This includes SMD MOSFETs, high performance ADCs/DACs, power converter ICs, SMD op amps, modem ICs, etc. Please refer to this tutorial for more instructions: http://courses.engr.illinois.edu/ece445/lab/resources/ece_purchasing_app_tutorial.pdf

Personal Purchases

It is always possible and encouraged to purchase your own parts from a local store (Radio Shack, Best Buy, etc.) or order them from online vendors. Personal purchases will not be reimbursed by the department.

Economic Overnight Outlet

Chester Hall, Sabrina Moheydeen, Jarad Prill

Featured Project

**Team**

- Chester Hall (chall28), Sabrina Moheydeen (sabrina7), Jarad Prill (jaradjp2)

**Title**

- Economic Overnight Outlet

**Problem**

- Real-time pricing in ISOs, such as the Midwest, California, New England, and New York, provides differentials in electricity prices throughout the day that can be taken advantage of. The peak price of electricity compared to the minimum prices can feature variations of up to 70%. With price agnostic charging, this results in unnecessary costs for those who charge devices (see attached spreadsheet). This same principle can thus be scaled for large commercialized applications requiring high-capacity batteries, resulting in a higher savings potential to be taken advantage of.

- Calcs: https://docs.google.com/spreadsheets/d/1JBzt2xm0Ue4a_teosdak623h0zSP5nHRKi7Wi8rMcPo/edit?usp=sharing

**Solution Overview**

- We will create a device that can fetch real-time prices from regional ISOs and enable charging when prices are lowest. Our primary application will be centered towards warehouse electric vehicles using high-capacity, fast-charging lithium ion batteries. Such vehicles include forklifts, cleaning machines, and golf carts.

**Solution Components**

- [ISO LMP API] - Through use of a WiFi-enabled microcontroller we can fetch real-time prices and build our control system around these values.

- [Passive High Performance Protection] - In order to provide downstream safety to the loads, we will ensure the device features surge protection and is rated for the high current of fast charging. The switching of the connection will be done with a contactor whose coil is energized according to the microcontroller.

- [Device Display] - LCD display to show information about the current energy price and the current day’s savings.

- [Manual User Override] - The device will feature a manual toggle switch to either enable or disable the cost-optimized charging feature allowing users to charge loads at any time, not necessarily the cheapest.

- [User Interface] - Software application to allow for user input regarding the time of day the device must be charged by. The application will also display information about total savings per week, month, or year and savings over the device’s lifetime.

- [Control Power Converter] - In order to run the low voltage control systems from the outlet, either 120VAC or 3-phase 480VAC, we will need to step this down to a low DC voltage of around 3.3VDC.

- [Memory System] - Microcontroller capable of performing control function within user specified parameters.

- [Device Connection] - Connectivity to the battery of the device being charged so that current state of charge (SoC) information can be used. Potential experimental filter algorithms will be used in order to estimate the SoC automatically, without requiring the user to input the specific data of the device being used.

**Criterion for Success**

- Able to charge devices at lowest cost times of the day and display current pricing and savings information. The upfront cost of a large-scale reproducible product must be less than the lifetime savings incurred by purchasing the product. Users without an engineering background can easily analyze their savings to visually recognize the device’s benefit.

Business Office

If none of these methods work, you can go through the business office with the help of your TA.