Recent content by wounder

  1. wounder

    How to do this USB transfer?

    I have a scenario that, when receiving data through UART (STM32) ,same time the data is displayed in the notepad(opened in PC) how can I implement this? I am using stm32 micro controller Figure below [Mod edited to put image inline]
  2. wounder

    Messages sent when keyboard key is pressed

    When pressing keys on a keyboard what messages are sent to a PC? Is there any format? Is it ok to send this message using a microcontroller (through USB cable)?
  3. wounder

    Relay with small in size

    Yes.. Dip size format.. Instead of this relay needed a smaller one.
  4. wounder

    Relay with small in size

    i have a relay with an Outline Dimensions:(15.5x10.5x11.8)mm 5V,3A--> Switching voltage 230VAC Datasheet is given below.. could you suggest the similar capacity with small in size (not a solid state relay)?? https://img.ozdisan.com/ETicaret_Dosya/445413_4369639.pdf
  5. wounder

    Component values are unknown

    Could you please provide other SMPS circuit rated(min of output 500mA)
  6. wounder

    Component values are unknown

    project simply a smart socket. figure below gives much details
  7. wounder

    Component values are unknown

    I have a circuit consisting of ESP8266,STM and a single relay. For supplying power to these IC I need an SMPS circuit. I got a non-isolated buck converter (using VIPER06Xs) as shown but the component values are unknown. Could you please tell the suitable component values needed for this...
  8. wounder

    Is it possible to send AT commend through mobile APP??

    I have a Bluetooth module(HC-05). I have included the datasheet of Bluetooth module. my doubt is is it possible to send AT commend and control HC-05 Bluetooth module using android (via Bluetooth)??
  9. wounder

    Resistor issue

    ok..fine but why resistor in circuit [mentioned] is damaged ? any solution for overcoming issue?
  10. wounder

    Resistor issue

    The given circuit is the fan speed control. the input 230v is divide with different capacitor , resistor arrangement. why my R22 resistor(4.7 ohm,1 watt) damaged when RL4 relay is active? Other resistor has not yet any damage issue . I was changed the wattage rating (4.7 ohm,2 watt)but still...
  11. wounder

    Why relay contact stick even when power off?

    this is the value of scrubber(R and C ) i am taken..is this ok for my circuit?
  12. wounder

    Why relay contact stick even when power off?

    when fan is in 1st speed relay RL1 is active other relays are not . speed relay ON 1 . RL1 2 . RL2 3 . RL4 4 . RL3 RC network in series with relay are used for down the supply voltage(230VAC) with different speed . How can i protect the contact? please...
  13. wounder

    Why relay contact stick even when power off?

    I have a circuit diagram of fan speed controller(as shown) some time its work quit normal else the relay contact stick in normally open(NO) contact even when supply is off(not demagnetize ). then i hit some object top of the relay, its work normal. why this sticking issue happens? relay...
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