# help me out!

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#### Babygal

##### New Member
am puzzled about what project to choose among these;
1. GENERATING 5-VOLT FROM A 9-VOLT BATTERY,
2. 555 TONE GENERATOR (8-OHMSPEAKER) &
3. PHOTOELECTRIC STREET LIGHT.
1st of all, am a new student in the course and i love project stuff.
so would someone plese help me out in which one 2 chose, the one ill be able to get the materials easily and cheaply, to completion.
thanks.

#### Gene

##### New Member
I would expect the parts to be available for any of these at the local part house/Radio Shack.

#### Babygal

##### New Member
thanks Gene, but not in that sense. what i wonna know, is the project that would be easy to do, with the available materials, the way to go bout it, without any difficulties. i mean, if anyone knows how to go about any of the above projects(the steps to be followed), to help me out! so that i can b able to tell which project would be the easiest 4 me to do.
thanks.

#### mattg2k4

##### New Member
1. GENERATING 5-VOLT FROM A 9-VOLT BATTERY is the easiest of the bunch. All you will really need is a 5 volt linear regulator such as the 7805 from radioshack. Scroll down to the application info on its datasheet to find out how to properly hook it up.

#### kinjalgp

##### Active Member
I would suggest "3. PHOTOELECTRIC STREET LIGHT." since it has some practical application whereas other too are just for learning purpose.

##### New Member
Tone from an 555 is the most fun to torture other students at 1-2 kHz.
It also includes two sections that can be treated separately: Oscillator and Amplifier. The result is pretty audible, too. Quite cheap and easy to build as well. But depends on the street light: how big will that be? Full size or a scaled model ?
For learning about basic circuits, the 555 thing would also be better.

##### New Member
I just forgot: about the 5V regulator, you can also make a quite complex regulator design with a kind of buck converter. See **broken link removed** and **broken link removed** .

#### Gene

##### New Member
The 5 volt supply would be simple but I don't think you would enjoy that much. The street light would be relatively simple - here's ONE way to do it:

Only a few parts and a high probability of it working on the first try.

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