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Thank you ads-ee. But I checked bulk pricing of this FPGA on Digikey and other sites; the price seems the same. I couldn't find it cheaper anywhere. Thanks.
Hi All,
Why FPGA development boards cost way lesser than the actual price of the FPGA used in that dev board.
See the price on Altera website ($145.72)
https://www.buyaltera.com/PartDetail?partId=4899931
FPGA Development board costs lesser than this ($99)...
This line of code is enough in CCS to set up UART and printf can be used to txmit characters.
but you have to add a delay in the loop. Make sure baud rate of the module is 9600.
You can use 1M resistor. Just use any values near 1M (RC oscillator)
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As FVM said, better use your temp switch to ON supply transmitter and HT12E supply if it is a battery operated device.
1. Connect you temp switch on an of the pins (D0 or D1 or D2 or D3 or D4) and the corresponding out pins at the receiver will change with switch state.
Example.
If you connect your temp switch on D0 (HT12E) then D0 OUT of HT12D will change its state with change on D0 pin.
start with PIC or AVR. Even though many other controllers are there on market, in India you won't find other uCs easily.
you can buy PIC as well as AVR development boards and programmers from online stores like ebay, amazon etc.
If you are a beginner you need the following things to start.
1...
You are using ccs compiler right ?
#include <htc.h>
is this a custom header file or you added by mistake?
Also where is your processor header file ?
//#include <12F675.h>
Uncomment this line.
Output of those cheap RF module will never be stable or error free unless you use a good coding technique. Since you don't have controllers in your circuit the only possible solution is HT12E/12D pairs.
Yes, if your temp sensor's out is logic high/low after threshold and logic low/high below threshold.
any change in Dx will reflect on Dx OUT of receiver
Check these 2 circuits.
Instead of switch connect your temp sensor on/off pin. (high/low states)
Transimitter Receiver
D0 - D0 OUT
D1- D2 OUT
D2 - D3 OUT
D3 - D4 OUT
You have to use encoder/decoder IC pair for error free communication with ASK modules. HT12E and HT12D
E- encoder @transmitter side
D- decoder @receiver side
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