microcontroller

Hi All, I have a small PCB circuit with a brushless motor being driven by a Arm Cortex STM32F302K8 microproccessor it also contains mosfets and microswitches. This PCB has a 4 pin header for an external programming card, but this programming card has not been released and it has been 2 years...

Hi, I'm a beginner so please understand if I... you know... don't understand. I have the attached circuit built and when I run the motor it works fine, but when the motor stops it (sometimes) resets the microcontroller. I know it is not too little current from the supply, but more likely the...

I know how to extract code hex files from ATmega328p microcontroller with ISP Programmer method is there any way I can do it with Analog Devices Microcontroller?

Please consider some professional embedded system with 16-bit microcontroller. I know embedded software build tools report program flash memory usage. I think they also report RAM usage but do they report maximum RAM usage? Build tools may not know how much heap will be used during run-time...

Hi Guys, noob here. - I have board A and board B. Both have MCUs. - I have a reset signal going from board A to board B. The reset signal is normally HIGH (3.3V) - I have a digital input signal (logic 3.3V) going from board B to board A. - current implementation is two wires going to board A...

Hey all! :) I was looking for a solution to protect the analog pins of the ESP32 microcontroller. My circuit can produce voltages up to 5V and the analog pins of the ESP32 can only withstand 3.3V max. I found a solution online (picture attached) but I don't understand how the circuit works. I...

Hello all, I am currently working on a project where I have to divide a 100 MHz frequency by n. where n could be any integer1,2,3,4,...9. where I want to give these n integer from external keypad or any software control. Is it possible to do it with #microcontroller based system or FPGA...

Hi, I am trying to read the RS485 Absolute encoder from EK-TM4C129. I am using the MAX485 module to convert RS485 to ttl, which is half duplex, where DE is Active high, and RE is active low. I have written the code to enable the Transmitter and receiver, where needed. we must transmit the data...

I have been trying to use the USB2244 on a board but i can't seem to get it working and I am not sure what the problem is. I have went over and over the datasheet but can't seem to figure out what i'm missing . I have attached my schematics, I have verified i have 3.3V, and also that the 1.8...

Hello all, I will start off by saying that I don't know <snip> when it comes to circuit design or anything of that sorts, I am familiar with stuff like resistors, transistors, pots, and components like that, but I do not know about complex circuit design. I turn wrenches for a living and would...

I am currently trying to develop a pulse oximeter. For this I use the MAX30102 sensor and the NXP LPC1768 microcontroller. The communication is done via I2C. I have configured the MAX30102 sensor to generate an interrupt as soon as the FIFO is full. As soon as I start the program in debug...

I am playing around with an optical encoder built into a linear drive motor. There is a wire that is described as "Home indicator, TTL, Active high". I have connected it to PA4 on my Nucleo-F446RE (STM32), have set it to "GPIO_input" and have set the GPIO to "Pull down". I am trying to read...

Hi, Im looking for microphone to microcontroller. It is important that the microphone should have automatic gain. Im looking for microphone similar to https://wiki.dfrobot.com/Gravity__Analog_Sound_Level_Meter_SKU_SEN0232#target_5 but more cheaper. I found only max9814 and sen-12642 but that...

Hi, An initially charged capacitor in a resonance circuit undergoes periodic voltage reversal (blue line), as shown below: A possible circuit to address this problem uses 2 capacitor banks & switch modules, as shown: C₁ and C₂ represent metallized film capacitor banks of equal capacitance...

Dear all, this hobby project I setup is using an encoder to make the stick to be 90 degress which is at 1500 steps (0 degrees=perfectly horizontal using PID control). My encoder counter code is obtained from video here and I have tested it which works perfectly well. Since this encoder is 1200...

Hi everyone!, im currently a student, i know about electrical circuits, basic electronics, digital circuits, basic digital design, microcontrollers, programming and other things, im a biomedical engineer and currently im working as service engineer (giving maintenance to medical equipment) but...

Can use a pointer to access content of the memory location on embedded c. I need to write a program that add two numbers stored in memory location. int *p; int *q; p = (int*) 0x30610000; q = (int*) 0x30610004; int sum=(*p)+(*q) Is the above code correct? I need understand how access a content...

Hello, and sorry for my English. I want to use a I2C digital potentiometer (TPL1401) so, before I use it, I'm reading the datasheet (I'm not doing any specific application, I just want to improve my few skills in i2c). In this moment I don't have the IC physically to test, but in page number 31...

Hello, I'm working on a little side project for my home thermostat. I recently bought a nest smart thermostat to replace my old "dumb" thermostat and ran into an issue with the wires. I don't have enough wires to accommodate all of the thermostat functions. Running new wiring is not an option...

I wanted the MCU I'm using, samd21g, to detect when USB is connected on the board. The USB is used to power some other things on the board and currently isn't connected to the MCU. Also, the MCU can only handle 3.3V. I have a pin open on the MCU that I can connect the power of the USB to it...