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The program cannot be programmed using ULINK. After pressing the DEBUG key, the voltage of the reset pin of the microcontroller changes from 3.3V to 2.8V. I do not know why.
MCU

December 17, 2020 By Gabriel

1939 Replies：5
K60 MCU failed to download the program with Jlink, keil5 prompt: flash download failed cortex-M4.
MCU

December 11, 2020 By Prudence

2157 Replies：4
Analyze this control relay circuit.
Darlington tube

November 27, 2020 By Morris

1157 Replies：3
How can STM32 Nucleo use the Mini USB port on the board to supply power without plugging it into the computer?
STM32

November 27, 2020 By Beyonce

2108 Replies：3
The method of STM32 measuring high frequency 100K-120K with input capture has a large error.
MCU

November 27, 2020 By Colbie

2099 Replies：3
What should I do if the success rate of STM32F103 SW interface burning program is low?
STM32F103

November 27, 2020 By Yuri

2036 Replies：4
The programming is successful. The power-on pin is all high and the program does not run at all.
MCU

November 27, 2020 By Hakeem

2059 Replies：4
The if statement encountered during C language debugging is invalid, but it can be executed.
MCU

November 25, 2020 By Deja

1935 Replies：4
5V needs to supply power to the wifi module, do you have any good ideas?
TPS54331

November 18, 2020 By Raya

1805 Replies：3
What is the slow start of the micro-controller?
MCU

October 15, 2020 By Gabriel

2013 Replies：4
I have designed a simple and efficient zero-point acquisition circuit, and everyone gives me some suggestions.
MCU

September 24, 2020 By Alma

2017 Replies：4
How to design an effective ultra-low power sensor controller?
Test measurement

September 24, 2020 By Alonzo

1967 Replies：2
NUC505 floating point calculation is too slow.
NUC505

September 24, 2020 By Neil

1921 Replies：3
Can SQ015L be developed in C?
SQ015L

September 18, 2020 By Jaylon

1872 Replies：3
MOS tube switching circuit, the conduction of the tube will cause the MCU to trigger an interrupt?
MOS tube

September 18, 2020 By Jaydon

2077 Replies：3
Ads1115 adopts voltage divider resistance to measure the input value and the reading jumps.
MCU

September 18, 2020 By Jerry

2606 Replies：3
How to use allegro's motor driver chip A3950?
Allegro

September 18, 2020 By David

1151 Replies：3
Questions about the low power consumption and display of the microcontroller?
MCU

September 09, 2020 By Adi

2092 Replies：3
Help everyone: I designed the microphone to make the sound very loud, but the sound of recording and playback is very small.
pcb design

August 20, 2020 By Mason

1991 Replies：3
How to realize the dynamic scanning of the three primary color lights without cross light phenomenon?
LED

July 08, 2020 By Romario

2069 Replies：3

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Questions

The program cannot be programmed using ULINK. After pressing the DEBUG key, the voltage of the reset pin of the microcontroller changes from 3.3V to 2.8V. I do not know why.

K60 MCU failed to download the program with Jlink, keil5 prompt: flash download failed cortex-M4.

Analyze this control relay circuit.

How can STM32 Nucleo use the Mini USB port on the board to supply power without plugging it into the computer?

The method of STM32 measuring high frequency 100K-120K with input capture has a large error.

What should I do if the success rate of STM32F103 SW interface burning program is low?

The programming is successful. The power-on pin is all high and the program does not run at all.

The if statement encountered during C language debugging is invalid, but it can be executed.

5V needs to supply power to the wifi module, do you have any good ideas?

What is the slow start of the micro-controller?

I have designed a simple and efficient zero-point acquisition circuit, and everyone gives me some suggestions.

How to design an effective ultra-low power sensor controller?

NUC505 floating point calculation is too slow.

Can SQ015L be developed in C?

MOS tube switching circuit, the conduction of the tube will cause the MCU to trigger an interrupt?

Ads1115 adopts voltage divider resistance to measure the input value and the reading jumps.

How to use allegro's motor driver chip A3950?

Questions about the low power consumption and display of the microcontroller?

Help everyone: I designed the microphone to make the sound very loud, but the sound of recording and playback is very small.

How to realize the dynamic scanning of the three primary color lights without cross light phenomenon?

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