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  1. ismbn

    ESP8266 server & 2direction comm. with browser without INTERNET

    Hello. we are an Embedded developer. we make special purpose controller as per client requirement working nicely till we have seen this ESP WiFi module. we are stuck completely because our IT knowledge is bad. I am posting what we have tried till now, Please Help. we have ESP8266-V3 , i have...
  2. ismbn

    FreeRTOS Development Board for LPC18xx ARM Cortex-M3

    Thanks for the precious time to replay. i searched for ST microelecronics development board, there are many, & i am confuse which one one buy. can you please tell me witch will be better considering the peripherals noted above and easy to getting start with. please tell me what will be the...
  3. ismbn

    FreeRTOS Development Board for LPC18xx ARM Cortex-M3

    Hello. We Develop Embedded Solutions, Normally in PIC controllers, I have Worked on 8bit & 16Bit Controllers. But Now we want to use ARM Controllers. I don't know much about ARM. But Peripheral wise we have selected a controller (LPC18xx ARM Cortex-M3) I think Peripheral wise its a rich...
  4. ismbn

    [SOLVED] What to use Xamarin or Android Studio for Andriod application basied on Embedded

    Thank you for time. as Xamarin is not Free, it gives the Just 30 days Trail i will go think i will go to Android Studio. Thank you
  5. ismbn

    Need help starting with 16F877

    Hello janosandi using assembly is good but its its very old now. its very difficult to read the program flow,also you will always face this kind challenges when Ever you'll change the controller... so my opinion is to Use C as your programming language. its not that much difficult also is you...
  6. ismbn

    [SOLVED] What to use Xamarin or Android Studio for Andriod application basied on Embedded

    Hello. Actually i am an embedded developer. normally worked on PIC Controllers. I have done some projects in which i was using WiFi modules. Also i have made some Basic VB.net Application Using VisualStudio12 for embedded Controller Now i want to Make some Application on Android that will...
  7. ismbn

    Developer of automation Controllers

    Hello... We are in Mumbai India.... Please Contact me for any kind of industrial or Home Automation Projects... We Work on Micro Controllers, PLCs, and RTOS etc.... We have made lots of Controller including Vacuum presser Indicator & controller with RS485 Communication on Modbus, Hundreds...
  8. ismbn

    I want Learn RTOS. Please Help to start.

    thanks for the so what i have to do? which book i should to read ? please guide me....
  9. ismbn

    I want Learn RTOS. Please Help to start.

    Hello. I want to learn RTOS. I googled allot the information is widely available on the internet, but then I am not understanding it. i undurstand the language but the terms start rooling in my mind and i got sleep. I studied the freeRTOS tutorial also download the eclips and java runtime...
  10. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    @BradtheRad , @schmitt trigger thanks you for all the support, and a great success speech for me :wink:. i will keeep your word in my mind @schmitt trigger.
  11. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    yes i will post the scope trace :-o
  12. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    oh.. great news... its working. you where correct @BradtheRad & @Audioguru the noise are from the source only the very 1st design worked when i powdered it up using 9V battery & 7805, i am getting correct & 5v level output... Thank you all.:thumbsup:
  13. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    will it this can work please see the link... https://myweb.tiscali.co.uk/themicrouser/bodybuilding/02-02/02-02.htm
  14. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    i am powering it using arduino 5V
  15. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    I got this output waveform, Do you think i will get the pulse rate after including a band pass filter of 1Hz to 3Hz. since now its giving 50.xx Hz. i am using the above LED & LDR pair. Please refer the images
  16. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    ok. i will try this also... one thing i want to conform with you all, please suggest me what will be the proper way to placing the LED and LDR... i tried both option... 1. at same plane. i.e. receiver transmitter at same direction. and placing finger on it 2. receiver and Transmitter...
  17. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    hello. i tried your design... but i think there some problem 1. i am not able to see any changes in output. 2. this may be due to the gain is 1. but i connected the resistor of 100K between pin 7 & pin 6. but no result. 3. i have made this design please tell me is this correct to get the...
  18. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    what changes should i have to do in resistors value if i want to run this it 5V - - - Updated - - - if you don,t mind, please explain the diagram, i am not able to understand the working of diagram. and what changes should i have to do in resistors value if i want to run this it 5V?
  19. ismbn

    [SOLVED] Photo led and Photo Detector of Specific responsive Frequency

    What can happen if i use LDR instead of Photo diode

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