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harry123 · 2025-03-18

Hi I am trying to generate a Dc volatge ramp signal 0 to 1v and 1v to 0 I want to stop the signal on pressing the user button pc13.I am able stop the dac but the output on pin PA4 with respect to gnd is 0.02V #include "stm32f4xx_hal.h" // Define DA...

harry123 · 2025-03-12

/* USER CODE BEGIN Header */ /** ******************************************************************************* * @file : main.c * @brief : Main program body ************************************************************...

harry123 · 2024-11-08

Hi Everyone I am using Internal adc to sample 2 channels of adc using polling methodI am not able to reduce the number of samples per cycle by changing prescaler or Sampling timeI can only control the samples per cycle by giving software delay --> ...

harry123 · 2024-10-23

Hi everyoneI want to measure a small voltage of 10mv-50mv of a sine wave.Can i use Internal adc of nucleo board ? what is the lowest voltage i can measure using internal adc.

harry123 · 2024-10-03

HI EveryoneI am using Nucleof446RE board for uart communication through usb cable which is also my power supplyIs it possible to use external 5V supply for MCU and use USB cable only for uart communication or any uart to usb converters are needed to ...

harry123 · 2025-03-13

Thank you for answering all my doubts.Is there a chance to get values close to it if I can compromise on precision.

harry123 · 2025-03-12

>I bet you don't really need that fine control just for degaussing!Please suggest me whether to use internal dac or external dac for the following requirement, I have with me MCP4725 DAC which is also a 12 bit dac.I dont know whether i can able to ac...

harry123 · 2025-03-12

Yes It is an existing smps.For demagnetising transformer by gradually increasing and decreasing voltage from controller. Can I use internal dac or should I go for external 12 bit dac

harry123 · 2025-03-12

At 1st instance -> 0 to 3v the output goes to 0A to 25A2nd instance -> 0 to 0.3v the output goes to 0A to 2.5A......4th instance 0 to 0.003 the output goes to 0A to 0.025A So I wanted to use DAC for this requirementThank you

harry123 · 2025-03-12

>...... perhaps explain what you're trying to achieve here?I want to control the signal of SMPSif I give a signal of 3v dc the output is 25Athe output signal gradually decreases with decrease in voltage so trying to acheive it

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