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Because I need to implement it as cheap as possible!! and also it should be low power because it must used with battery. How much is power consumption of PLDs and how can i program it?
Hello, I need a circuit that when a push button is pressed then below square wave is generated four times. Do you have any idea to generate it without using microcontroller and as simple as possible?
Thanks for your reply.
Actually isolation doesn't matter to me and also I think voltage drop is not so much that become a problem. But what about power dissipation? Should I consider using heatsink or other thermal dissipation considerations?
Hello, I want to use TRIAC instead of relay in my circuit "just in order to occupy less space". Relay is intended to switch 220VAC up to 8A. What is the minimum configuration for using TRIAC in my circuit?
Error Response from server whensending POST request using sim800
I want to send data to a server using POST method with sim800. When I use POSTMAN, data is sent correctly but when I use the same headers of POSTMAN in the sim800 error is returend from the server and below message is recieved...
Hello, I want to supply an ATMEGA16 and sim800 module with a 3.7 Li-ion battery, so i used XL6009 module (not IC, figure below) to convert 3.7 to 5V. When just uC is connected to the output of XL6009 everything is ok and output is 5V, but when I connect sim800 module, XL6009's output rises to...
Hello, I want to write into a text file in a Flash drive using STM32F405 and via USB HS mode. I have used fatfs library and also Tilen Majerle Libraries for USB HS HOST mode. I succeeded to write to a text file in a 8GB flash memory. But I have two problems here:
1. When I use another flash...
Hello, I am trying to send some datas via post (or get) method in http from my sim900 module to a web page in a web server and then inserting it into a table in a database.
my web page is working good & i can post (or get) datas to it via browser in my pc and html forms
but I cant send datas...
It is said in datasheet that the module draws up to 2A peak when communicating with network. I used a 5V 2.5A adapter and still it had high drop out and it sometimes powers off.
Hello, I want to use a sim900 module with beaglebone black. I also want to power the module from beaglebone black, so I use 5V output pin on it. But when I power it up the SIM900 status led starts blinking 64/800ms and after a few seconds it stops blinking and powers off. i see the voltage on...
I don't have problem with receiver side,but it is with transmitter side. I send data as below:
AT+SAPBR=3,1,"APN","mtnirancel"
OK
AT+SAPBR=1,1
OK
AT+SAPBR=2,1
+SAPBR: 1,1,"100.66.170.64"
OK
AT+FTPCID=1
OK
AT+FTPSERV="ftP.gigfa.com"...
Hello, I want to send some data to a ftp server and receive data from it using sim900. I can write string to a specific file in the ftp server, but I don't know how to append data to end of file and also how to insert Enter to the end of each data I send. Each time I send a data it replaces...
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