I only stumbled over this thread by coincidence from another forum I believe. Since then I've lurked and posted once or twice.
[t]http://i.imgur.com/UkvqV.jpg[/t]
All done and ready for work!
Putting shelves up later.
[b]Edit[/b]
Have a JFET amplifier.
[img]http://i.imgur.com/dciIb.png[/img]
[b]Edit2[/b]
More work
[t]http://i.imgur.com/gkZJD.jpg[/t]
Good news today! Got my exam results back. And my scope arrived:
[t]http://i.imgur.com/dIWcd.jpg[/t]
I'm having fun with this! The probe doesn't arrive until tomorrow, hence the wires :v:
I spoke with one of the Professors of EE at my college about some off-course projects and possible help on them or just use of their facilities.
He said that I'm more than welcome to show up in their labs when class isn't in session and they can help me with whatever(Not to say that yall aren't helpful, cause yall are). Provided that I provide some written explanation of what I'm doing and what problem I need to solve...
This will be harder than just asking my Physics teacher back in HS if I could use some of the old O-Scopes..
Here's another tutorial:
[t]http://i.imgur.com/JMGJr.png[/t]
I tried to make it as simple as I could without leaving anything important out.
They told me to ask here.... So instead of reposting heres a link... [url]http://www.facepunch.com/showthread.php?t=1207436[/url]
Hmmm weather station.
Also yes you can use that module with your arduino.
yes I just dont know how :/
[QUOTE=Chryseus;37375101]Here's another tutorial:
[t]http://i.imgur.com/JMGJr.png[/t]
I tried to make it as simple as I could without leaving anything important out.[/QUOTE]
Did you make this? In that case, nice job!
I do have a question though. I havn't messed a lot with amplifiers, but to me it looks like it's an inverting amplifier, since if the input voltage swings up, the resistance of the transistor decreases, and the voltage-drop over it would decrease, resulting in a lower voltage at the collector. And likewise, if the input-voltage decreases, the resistance goes up, and the voltage-drop across the transistor increases.
Is this correct, or is it completely misinterpreted?
[QUOTE=BuG;37379818]Did you make this? In that case, nice job!
I do have a question though. I havn't messed a lot with amplifiers, but to me it looks like it's an inverting amplifier, since if the input voltage swings up, the resistance of the transistor decreases, and the voltage-drop over it would decrease, resulting in a lower voltage at the collector. And likewise, if the input-voltage decreases, the resistance goes up, and the voltage-drop across the transistor increases.
Is this correct, or is it completely misinterpreted?[/QUOTE]
Yes I made it and you are correct the collector voltage is inverted, by adding a second stage you can return it to normal, although in most cases the overall phase of this type of amplifier is not an issue, it can however be very important in more complex and wideband amplifiers where phase shift might turn negative feedback into positive causing it to oscillate.
[QUOTE=Mitchell4500;37376444]yes I just dont know how :/[/QUOTE]
I suggest spending a bit more time learning the basics of electronics, maybe read a book or two.
For a weather station you will need sensors such as temperature, pressure, wind speed, humidity, etc, some of these may require amplification which can be done quite easily using op-amps.
Once that is done you can feed the analog voltages into the ADC of your microcontroller and proceed to transmit the data.
[QUOTE=Chryseus;37380232]
I suggest spending a bit more time learning the basics of electronics, maybe read a book or two.
For a weather station you will need sensors such as temperature, pressure, wind speed, humidity, etc, some of these may require amplification which can be done quite easily using op-amps.
Once that is done you can feed the analog voltages into the ADC of your microcontroller and proceed to transmit the data.[/QUOTE]
Yeah I have bought several books on amazon and stuff... Problem is thats not how I learn. As much as I try I cant learn by reading... Everything I know I have done by experience... I think a weather station would be a great way to learn.
But first things first. If im going to transmit the data over ethernet id either like it to be via a socket connection to a application I wrote to receive socket data or just allow the arduino to host a web page with the data on it if possible.
Does that sound like a good/working idea?
I suspect Id also have to wire the arduino to ethernet board with the tx and rx pins? Lantronix describes the board as a "Serial to ethernet" so I assume id create a serial connection to it and perhaps use some sort of library in arduino to communicate?
[QUOTE=Mitchell4500;37386352]Yeah I have bought several books on amazon and stuff... Problem is thats not how I learn. As much as I try I cant learn by reading... Everything I know I have done by experience... I think a weather station would be a great way to learn.
But first things first. If im going to transmit the data over ethernet id either like it to be via a socket connection to a application I wrote to receive socket data or just allow the arduino to host a web page with the data on it if possible.
Does that sound like a good/working idea?
I suspect Id also have to wire the arduino to ethernet board with the tx and rx pins? Lantronix describes the board as a "Serial to ethernet" so I assume id create a serial connection to it and perhaps use some sort of library in arduino to communicate?[/QUOTE]
Do not recommend using web page to transfer data... I'd recommend sockets.
[h2]Thread is being moved to the Maker Mates section[/h2]
Please pack your bags gentlemen.
Bye thread :suicide:.
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