| Author | Message | ||
     john |
In the laser project I try to to connect a microphone to the transmiter but the thing is that the micropohone is getting all the energy and letting the laser without any, then I try to conect the microphone apart of the project but I don't know how I could do that, I'm asking for help on this if you could give me an example of how connect it or a diagram please help me | ||
| Simon Quellen Field (Sfield) |
You need to connect the microphone to an amplifier, then plug the laser's plug into the amplifier's earphone output. Radio Shack sells an inexpensive battery powered amplifier (part number 277-1008) that works great for this application. You can see a picture of it in the electric fish section of the web site. | ||
| Anonymous |
I need a write-up explanation of how the laser communicator works | ||
| Anonymous |
I am amazed with this ingenoius project. I need an explanation that my kids will understand. Can you please help me. | ||
| Rochester |
My kids and I were amazed at the laser communicator project we found on your website. They ask me to explain it but I couldn't. Can you help me? | ||
| Simon Quellen Field (Sfield) |
There is a section at the end of the project titled "How does it do that?". If that explanation is not sufficient, please let me know, and I will expand upon it. | ||
| INEED HELP QUICK!!! |
I hooked up the laser communicator exactly how it was on the diagram, but its not working...the laser keeps burning out on us!!! Will you help me please? | ||
| Simon Quellen Field (Sfield) |
Are you using a laser from our catalog? If not, you may need an extra current limiting resistor in series with the battery. Something like 100 ohms should prevent too much current from getting to the laser. If your laser uses 2 batteries instead of 3, you should only use 2 batteries. If 100 ohms makes the laser too dim, you can put two resistors in parallel to make a 50 ohm resistor. That resistor should then be put in series with the battery. You may also be using a very powerful amplifier or sound source. Turn the volume down. | ||
| Anonymous |
How can I purchase a laser from your catalog? | ||
| Simon Quellen Field (Sfield) |
Go to the main page at scitoys.com. Click on the word "Catalog". Select the item category you want. Select the item you want. Enter your credit card information and address. Click on the Submit button. | ||
| Michael Martinez Unregistered guest |
hey sfield, Im doing a science project and I need some background info on the laser communicator. how did it work, general info on procedure... | ||
| Simon Quellen Field (sfield) New member Username: sfield Post Number: 101 Registered: 12-2004 |
It's all here. | ||
| ryan colaco Unregistered guest |
hello simon! i guess im gettin on your nerves now, but a question again pls...u say i can connect my pc speaker to the photoelectric cell n battery, do i need to provide the pc speaker with a power supply other than the photoresistor? and i read that a guy used a earphone straight instead of the amplifier... can u elucidate?a schematic would be really helpful. thanking u, ryan. | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 475 Registered: 12-2004 |
You need to re-read the web page. If the speaker is amplified, it will need its normal power supply. If it is not amplified, you may only barely hear anything. | ||
| Syed Haider Abbas (Haider_abbas) Junior Member Username: Haider_abbas Post Number: 4 Registered: 12-2007 |
Hi Simon. I have to enter in the science fair with laser communicator project but i live in Pakistan and you know in Pakistan the electric shop keepers are usually ill litrated and they don,t under stand the terms present in your site.No one can understand the terms, solar cell or photo resistor so please tell me the method how can i make the solar cell or photo resistor at home.If it is not possible so please tell me the solution of this problem I shall be thankful to you | ||
| Syed Haider Abbas (Haider_abbas) Junior Member Username: Haider_abbas Post Number: 5 Registered: 12-2007 |
Hello Simon. How are you. I need help with computer controlled laser transmitter. The first problem is that i don,t have com port in my computer what replacement i can use instead of com port the second is this i can't understand the pictures you have given can you please simplify the photos. I shall be thankful to you. | ||
| Syed Haider Abbas (Haider_abbas) Junior Member Username: Haider_abbas Post Number: 6 Registered: 12-2007 |
Hello Simon, I know that i am taking you to headache. But it is key to my success in science fair. Please write the laser communicator project in simplified language. Define collector lead emitter lead of transistor in left right form. | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 1823 Registered: 12-2004 |
We ship all over the world. You can order the parts on our web site. USB to Serial adapters are available for computers that don't have serial ports. They are inexpensive. | ||
| Syed Haider Abbas (Haider_abbas) Junior Member Username: Haider_abbas Post Number: 8 Registered: 12-2007 |
Hello Simon, Thank you for help, Just tell me how i can order the parts without a credit card some one deliver it to my home and i will give him money. | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 1831 Registered: 12-2004 |
Find someone with a credit card and pay them to place your order. |
