Any good summer electrical projects?

[Zholl]

Originally Posted by rtfgnow

I suspect that Chris is more into the circuit design aspect of EE. Am I right? This is not often discussed in FIRST.

Chris you should look into some of the more common logic gates and learn what they do. After you do that, try to make a timer or stop watch. I don't know of any activity kits that would help you.

absolutely right, alex. I'd try doing something with an arduino, but I'm still trying to figure out how all this works, so I'd rather not get in too deep. I will look into the stop watch idea, though. messing with the logic gates is probably a good place to start

[Hawiian Cadder]

my summer project is making a Lego breakout for an arduino. this way i can make lego robots and then use the much more powerful arduino to control them.

[Hugh Meyer]

Zholl,
If you like to control stuff with a computer there is a kit made by Velleman-kit that is cool. It is model # K8055. You will need to solder it together and then you have a USB interface device that has lots of inputs and outputs and even has two PWM outputs that could control a Victor or Jaguar. Sample code is supplied in VB, C++ and a few others. I used it in an EECT class I taught last semester for a basic overview for students to learn about PC control.
It is great to hear you want to do something this summer. That is way better that setting around playing video games. Good luck with what ever you decide to tackle.

Hugh

[Ian Curtis]

Originally Posted by Zholl

absolutely right, alex. I'd try doing something with an arduino, but I'm still trying to figure out how all this works, so I'd rather not get in too deep. I will look into the stop watch idea, though. messing with the logic gates is probably a good place to start

In my experience, Ardunios are pretty hard to mess up. The materials aren't written for engineers and technical people, they are written for non-technical people who want to get their feet wet. It certainly helps to have people you can ask, but I'm pretty confident you could figure an Arduino out on your own. In addition, their forums are conveniently filled with knowledgeable people who love to help.

You might try this for some old time electical fun. Some of the projects would make neat shelf displays or gifts.

[mikets]

We are trying to build something that we can use for next year. One of the project ideas is a battery load tester that will check if the battery is still good. Our design can be found at http://proj.titanrobotics.net/docs/Robot/BattTester

[JamesBrown]

Asking for good electrical projects is going to yield you tons of different opinions. Let us know what you might be interested in (basic home automation, Remote control vehicles, electronic art, hobby radio?) and we can give you some basic projects to get you feet wet, and then send you in the right direction to find increasingly complex projects. For example if you want to stay in the robotics field, perhaps start with beam robotics, then move on to incorporating an arduino (or your choice of other micro) and using servos that can be controlled directly with the board. Eventually build your own speed controllers, then try different sensors. If robotics doesn't seem practical to you or their is something you find very interesting let us know and we can give you better ideas of what may be fun.

As far as building the classic circuits (stop watch, head phone amp, etc) I appreciate what they are and that they teach basics of electronics but I don't think it is necessary to start this low level. Eventually you learn how/why these things work, I believe that you can start out working at a higher level, if you need an amp you can buy an IC that will serve your purpose, eventually you will learn what is going on inside, in the mean time it really isn't that important. See the big picture first, the rest will make sense as you go.

[Zholl]

Originally Posted by JamesBrown

Asking for good electrical projects is going to yield you tons of different opinions. Let us know what you might be interested in (basic home automation, Remote control vehicles, electronic art, hobby radio?) and we can give you some basic projects to get you feet wet, and then send you in the right direction to find increasingly complex projects. For example if you want to stay in the robotics field, perhaps start with beam robotics, then move on to incorporating an arduino (or your choice of other micro) and using servos that can be controlled directly with the board. Eventually build your own speed controllers, then try different sensors. If robotics doesn't seem practical to you or their is something you find very interesting let us know and we can give you better ideas of what may be fun.

As far as building the classic circuits (stop watch, head phone amp, etc) I appreciate what they are and that they teach basics of electronics but I don't think it is necessary to start this low level. Eventually you learn how/why these things work, I believe that you can start out working at a higher level, if you need an amp you can buy an IC that will serve your purpose, eventually you will learn what is going on inside, in the mean time it really isn't that important. See the big picture first, the rest will make sense as you go.

Thanks for the advice. As far as what I'd like to do, though, I'm not really sure. I'm starting with this Mintyboost project simply because it's simple and highly practical. Otherwise I know I just want to mess with something. I'm sure I'll get a better idea of what I'm really interested in once I've done a couple projects, but this is all pretty new to me

[Al Skierkiewicz]

mikets,
I would like to remind your team that the AGM batteries we use are slightly different than a typical lead acid cell and may yield some misleading results. Double check the battery spec sheets from the manufacturer.

Chris
Summer would be a great time to get your Ham license. There are a variety of small kits for ham transmitters and simple receivers. Check out Ramsey kits or just search the internet. Ham clubs have classes and hamfests (ham flea markets) run license tests and are a great source of cheap parts and used equipment. The Colorado QRP club (that is for low power users) has a website and list local fests here http://www.cqc.org/swapm.htm

[Zholl]

Originally Posted by Al Skierkiewicz

Summer would be a great time to get your Ham license. There are a variety of small kits for ham transmitters and simple receivers. Check out Ramsey kits or just search the internet. Ham clubs have classes and hamfests (ham flea markets) run license tests and are a great source of cheap parts and used equipment. The Colorado QRP club (that is for low power users) has a website and list local fests here http://www.cqc.org/swapm.htm

I've actually already gotten my license (KD0IKL), though I had not thought of doing a kit. I will certainly look into that, though. I also noticed that there's a festival next Saturday, so I will probably check that out

[Al Skierkiewicz]

FB on the ham license. Summer is always a ham's season for planning antenna projects before the snow flies. Have you tried your hand at HF QRP? It's a challenge but can be fun and rewarding.

[JamesCH95]

I'm not a fancy electrical type, but I have an interesting project you might try:

I was trying to microwave popcorn last night, and I had to listen to the kernels pop and stop the microwave after I started hearing 2 seconds of silence between pops. This was pretty annoying because I had to sit there for 4 or 5 minutes hitting "add 30 seconds" on the microwave. I bet you could make a device that would hit the required keys on a microwave (+30sec and stop) and use a microphone or some audio device to recognize pops. Maybe throw in a couple 555 timers (one to check time between pops, one to keep the microwave running by hitting +30sec), logic gates, a relay or two (controlling solenoids that press the microwave's buttons), and you've got a reasonably complex circuit to perfectly cook popcorn.

Best of luck in your summer projects.

[JamesBrown]

Originally Posted by JamesCH95

I'm not a fancy electrical type, but I have an interesting project you might try:

I was trying to microwave popcorn last night, and I had to listen to the kernels pop and stop the microwave after I started hearing 2 seconds of silence between pops. This was pretty annoying because I had to sit there for 4 or 5 minutes hitting "add 30 seconds" on the microwave. I bet you could make a device that would hit the required keys on a microwave (+30sec and stop) and use a microphone or some audio device to recognize pops. Maybe throw in a couple 555 timers (one to check time between pops, one to keep the microwave running by hitting +30sec), logic gates, a relay or two (controlling solenoids that press the microwave's buttons), and you've got a reasonably complex circuit to perfectly cook popcorn.

Best of luck in your summer projects.

Why couldn't you just set the microwave to run for 5 (or more) minutes then wait until the popping started to slow, then stop the microwave (at the right point) and clear the time? Seems like that would prevent you from needing to stand by the microwave for more than ~30sec.

[JamesCH95]

The point is that one still has to pay attention to the popcorn for the 4 or 5 minutes to stop it at the right time.

I think discussing my popcorn microwaving technique is a little off topic

[Brandon Holley]

Originally Posted by JamesCH95

I think discussing my popcorn microwaving technique is a little off topic

The microwave I own has this feature built into it already. When you press the "popcorn" button, it automatically turn the microwave on. The microwave will keep running and "listen" to the pops. When it gets to a point where the pops are slowing down, it then displays a timer for how much time is left based on what it thinks (usually ~20 seconds).

Every single bag of popcorn thats ever been made in that microwave has come out perfectly. That includes every brand, type, size...even the mini bags come out perfectly.

I love my microwave.

-Brando

[Al Skierkiewicz]

Brandon,
If it is like mine, the oven senses humidity levels in the cavity rather than listening for pops. I abhor unpopped kernels so I add 30-60 seconds. It is popcorn roulette though, walking the fine line between fully popped and burned. A funny story, we did have popcorn here in the cafeteria vending for a long time. The cafeteria is just down stairs from the CEO's office. One of the operators loved popcorn but wanted to multitask. So in went the bag, radiate ON and get in a bathroom break while waiting. The last two never were the same time so burned popcorn smoke went right up the stairs. We haven't had popcorn in the vending machines for many years now.