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You can also check out VDSL. There are VDSL routers you can connect back-to-back. The connection between routers can be standard phone cable, but in your case, use that LAN cable. I have 250m phone pair cable and two Zyxel Prestige 841 routers, works fine...
How about PMR radio and AFSK? I have been working with them and have partial(sorry) blog post on subject. Maybe you can find some ideas from it? **broken link removed**
Please check that it is legal to transmit AFSK on PMR frequencies in your country.
As pointed here already, set up switches so that you never feed power to power company lines. Safety of your generator is secondary issue here. The primary reason is, there may be repair man solving power outtage, expecting cold lines as he has disconnected them from feed. And suddenly you make...
I am sorry. Totally missed the part that you are going to use D9 connector on your Nexys 2 board.(I was thinking direct connection FPGA IO pins) I looked at Nexys manual and it does have RS-232 level converter. So D9 is standard RS-232 port. You must use TTL to RS-232 converter, something like...
What voltage Atmega16 is running? If you can choose voltage for it, use for example 3.3v and no voltage conversion needed. If it is running 5v, you can do 5v->3v with two resistors. (voltage divider). You can check datasheets if it is possible to connect 3.3v output directly to 5v input. Is 3.3v...
FvM: So you suggesting I should add more ground connections to headers. For example each other pin, or at least few to center?
If you were referring to bottom layer ground plane(blue), there are 0 ohm resistors to make ground more solid.
You are using named pipes. Try mapping network drive from server. This makes sure you are using windows authentication to your server. Named pipes need windows authentication before they work. Can you ping with name? ping HANIF-PC ? If not put HANIF-PC to your hosts file. Make sure your...
Hi, a have build board with Spartan 6 and on that board is also atmega8 that reads SD card via SPI interface and pushes configuration into Spartan. Configuring Spartan is quite easy. You just clock serial data in and check few pins when you are done. I can upload code and schematics if you like...
Hi,
I designed PCB with Spartan 6 FPGA and my plan is to stack this board with other board having AD or DA converter (like AD9744). I was wondering how fast data rates are possible with pin headers like this: https://www.pololu.com/catalog/product/965 .(and female connectors matching it)
I...
No, those values are unrelated. You cannot have over 45V no matter what current. And you cannot have more than 100mA current, no matter what voltage. If you want more, find another transistor.
You are reading Absolute Maximum Ratings section. If you go over these values your transistor will break.
'Base-Emitter' is actually emitter-base voltage, and means reverse voltage over base-emitter 'diode'. I do not think you are going to hit that very easily. You are right about forward...
Use shadow registers. When you do BSF or BCF it reads port current voltages, sets or clears bits, and sets new output values. When you do BSF or BCF in series like this:
BSF PORTA,0
BCF PORTA,2
And there are some capacitance on pin, it may be that bit 0 at PORTA has not yet hit high level when...
Well, the issue is so complex that there are no straight answers. There are some physcal limitations, and I think you have found them on datasheet. The real question is, what is the speed your desing can run? The faster clock you are using, the less you can do in one clock cycle. Faster clock...
k = n >> c means take value in n and bit shift it to right c times store value in k.
if(k & 1) means if k bit 0 is set print 1 else print 0. (& is and operation)
Lets say n has decimal value 5. In binary "00000000000000000000000000000101"
first round:
c=31
k=0. In binary...
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