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  1. C

    Dynamic Memory Allocation in C

    I know when size of array is fixed we should use static memory and when size of variable we should use dynamic memory, there is no misunderstanding to understand basic difference This example make sense, Every person has a different name The user does not know the exact length of string to...
  2. C

    Dynamic Memory Allocation in C

    Hi guys, I looked on the internet that dynamic memory allocation is not suitable for small Microcontroller But I need to understand the information given in this page https://www.geeksforgeeks.org/dynamic-memory-allocation-in-c-using-malloc-calloc-free-and-realloc/ I am trying to understand...
  3. C

    Can integer variable store char value?

    integer variable store integer value like 10, 100, -6 Can integer variable store char value? my program shows int type variable can be store char value. #include<stdio.h> void main () { int Code = 'A'; printf("Code %d \n", Code); printf("Code %c \n", Code); } if I write int...
  4. C

    IoT web application

    I am looking to advice on IoT web application. I don't have much knowledge on web application I have searched about the web application on the google so I got so many opinion on web application 1. Log in page : only valid user should use dashboard 2. Dashboard : There may be different buttons...
  5. C

    automatic storage classes

    I have been searched but I have confusen I don't know what happen when we write bellow line in the the code auto int count; what it tells to compiler to do ?
  6. C

    automatic storage classes

    Hi all I am trying to understand the proper use of storage class in c programming we can specify a storage class while declaring a variable Storage_class Data_type Variable_name ; For a example, #include<stdio.h> void loop (void) { int count; for (count = 0; count <= 10; count++)...
  7. C

    Looking help to export Eagle PCB to gerber files

    I am inexperienced in PCB design so I tried to make something simple. I have eagle 9.3 In the circuit there the two connector one for input and other for output connection, one led and current limiting resistor I think my design is ready to convert into gerber files but I am not sure...
  8. C

    DRC Error in PCB Design

    @AnalogKid which format of the PCB layout, PCB maker accept for PCB Board Which file do you send to PCB production house for final PCB board ?
  9. C

    DRC Error in PCB Design

    Yes, I will make it mounting holes on PCB. D1 and R1 are the assembly number. I didn't understand the revision sticker? I did search "Bare PCB board" but I don't understand the difference between simple PCB and Bare PCB
  10. C

    DRC Error in PCB Design

    Thank you very much I'm new I do not know much. Is this PCB layout ready for production? Or something else can be improved
  11. C

    DRC Error in PCB Design

    I am using Eagle cad to design PCB. I am trying to convert schematic into PCB Layout schematic When I check DRC I get three error's I don't understand why I get the error someone, please tell me how to remove all three errors
  12. C

    Power supply ratings

    Does it provide a constant 5A to load? How much minimum current it can be drawn?
  13. C

    Power supply ratings

    Hello I am looking information for this 24V SMPS It has a rating 24V Dc, 5.0A so It means it can supply maximum 24V DC and 5.0A current I want to calculate a minimum voltage and current it can supply How to find minimum voltage and current it can supply to load ?
  14. C

    Reading 24 V signal

    the sensor has PNP output detail is here https://www3.panasonic.biz/ac/ae/search_num/index.jsp?c=detail&part_no=DP-102-E-P I am sorry I forgot to provide detail
  15. C

    Reading 24 V signal

    I didn't understand, I have doubt if i do this, my controller can damage
  16. C

    Reading 24 V signal

    I want to detect the presence of the 24 V mine circuit Is it look's fine to interface 24 V Sensor to input of microcontroller ?
  17. C

    Reading 24 V signal

    I'm working on a project to measure the pressure, I have a DP-102-E-P and I am trying to interface it to the AT89c51 I have designed with divider circuit I want to use optcoupler ic to read 24 v signal to 8051 I have 4n35 optcoupler Can we use 4n32 to read 24 V signal ?
  18. C

    Response time of device in datasheet help

    Thanks for the fast response davenn. I have this is product https://www.industrybuying.com/solenoid-operated-valve-aeroflex-FAM100765/?q=Aeroflex+24+VDC+Single+Solenoid+Valve+V4-08&cat= I did the google search to find the datasheet and I found one that I have posted previously any idea how...
  19. C

    Response time of device in datasheet help

    Hello everyone I am looking help to find the response time of the device in the datasheet. I want to know how fast it can turn on/ turn off. I have looked into datasheet but I don't understand about response time link...
  20. C

    Desktop application to control Load

    Hello I just want to do one experiment I have DC motor that is connected to 8051 microcontroller. I want to make develop a desktop application that can control DC motor from PC I know I have to create desktop application in c# and I have to program 8051 for serial communication I have a...
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