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Can your computer connect to internet ?
If yes, you can setup NAT port in your modem, go to address 192.168.1.1, and config to forward port to your computer.
If not, you can not receive data from GSM module.
Hi,
You can use AT commands to check GSM module, the "AT+CREG?" command can check whether GSM module is regitered to network or not, if not, you can restart GSM module by driving Power Key pin.
See AT command set document for more detail.
Hi friend,
Find example in my attachment, this project is written in QT, and it use qextserialport library to control serial port, if you don't like qextserialport library, you can write your own library.
Remember to choose rigth UART peripheral (dev/ttySACx), maybe it is different in...
.\obj\project.axf: Error: L6406E: No space in execution regions with .ANY selector matching main.o(.constdata).
.\obj\project.axf: Error: L6407E: Sections of aggregate size 0xbb83c bytes could not fit into .ANY selector(s).
Above error tell that your data array is too big, so not enough RAM...
Yes, with Rs = 220Ohm, open angle range will be so small. So, if we trigger it by another triac as I mentioned in post #1, I think we can increase open angle range. With sensitive triac, Ig may be smaller.
By the way, could you post your schematic circuit when you trigger triac 40A, is that...
Hi Kerim,
Yes, I thinks this is a disadvantage of MOC.
As your formula, when I use 22Ohm resistor, and I want to get a current 50mA across optocouple, the voltage trigger must be bigger than 22*50 = 1100 mV, with a 220VAC-50Hz source, we can calculate minimum value of x :
The voltage at t(s)...
Thanks for reply !
Yes, you're true, above circuit have that problem, I'll solve it by add a resistor between MT2 gates of two triac. This resistor will restrict current to G gate of second triac.
Parallel MOC can be supply bigger current, but with a triac that needs a high current (ex ...
Hi everybody !
I don't want to use pulse transformer in trigger triac (or thyristor) circuit, I want to use optopcouple (MOC30xx), but optocouple just permits small current at output, so with a triac need big trigger current (Ig), we can't use optocouple, I have an idea, I'll use MOC to trigger...
Hi everybody !
I have a problem, I have a variable declared in this way :
char __attribute__((space(prog),aligned(2))) temp[1500];
In my program, I want to change value of temp variable, I done like this :
*temp = 0;
or another way :
temp[0] = 0;
But value of temp variable was not change...
To set rule for your PCB, you press 'D' and 'R' key.
To check error on your design, you can press "CC" or "CD"
You can not export design rules from one PCB to another PCB (or I don't know how to do it).
If you are new in PIC microcontroller, you should work with some simple things, such as : Led blinking, led 7 segs, LCD, ADC,so on...
When you're familiar with those modules, you'll see that your project with LM35 is quite simple !
So pls don't ask about your project until you've already...
1. What motor do u want to use ? DC motor or 3-phase motor or 1-phase motor, or BLCD motor, or step motor.... ?
2. What type of PIC microcontroller do u want to use ? 8 bit, 16 bit or 32 bit ?
3. Do you know anything about PID algorithm ? Do you know how is digital PID, how to convert analog PID...
Pls don't ask about code, you should ask about algorithm.
How do u design PCB ? Have you ever working with ADC, LCD... with PIC ? Have u got any more ideas ? More detail question, more detail answer !
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