1. M

    Set up Microcontroller to save data to SD card using FAT file storage.

    Hi there, I'm looking for help with a FAT filesystem project. I have a special made measuring device with its own on board ARM MCU and RAM memory. Its is essentially a device that measures impedance through a tungsten filament as that filament is drilled at high RPM through a non conductive...
  2. EnzoEngr

    Any tips for MCU breaking after reflow soldering?

    After soldering up the parts, the DMA process on my MCU's (ATSAML21J18B-AUT) is breaking. I use an IR oven (T962A), cover the MCU in a heat shield, and reflow using low temp solder (the process gets up to 180C). With an iron at 200C, I will touch up pins with bad solder joints. The MCU is rated...
  3. C

    How to introduce myself to the microprocessor world (MOVE FORM MCU's to MPU's)

    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...
  4. sysWOW64

    Protecting PCB, multiplexers and MCU in vending machines

    Hello everyone, I am working on a low cost vending machine with the ESP32 and as you may know, it is necessary to properly protect the components to prevent users from trying to steal money or damage the components. The PCB has a TFT display and several multiplexers to communicate the ESP32 with...
  5. marcotecnovolt

    EEPROM Broken after some hundred writes

    Hi community, I'm Marco from Italy, I'm an electronic developer and I like automation in general. I would like to share my problem with community, to know what do you think about this. I'm developing an electronic board for general automation purposes, on this board there is a STM32F104 that...
  6. V

    What is best mcu for industrial places?

    Hi there, I want to use mcu for some automation, mostly i use mcu for controlling some stepper and servo motor and also some transistor but there is one problem that in my environment there is a lot of industrial 3 phases motors. What is the best mcu for my occasion? (Specially i can program it...
  7. pralayp

    MSP430FR6047: Calculating current limiter values for SCL,SDA,LCD-COM,TXD & RXD lines to increase battery life.

    Hello Experts, My application is a commercial battery powered device. The 2 most important thing for me is to achieve "accuracy in metering" and "Increase battery life" of my product. 1st thing I'm able to achieve using MSP430FR6047 chip for water metering. 2nd thing is what I'm working on...
  8. akku_p

    MCU with onboard Bluetooth

    Hello all, Caution, I am a newbie to MCUs. I am looking for a low cost MCU board with Bluetooth for communication with mobile app. I have purchased NodeMCU which comes with onboard WiFi. However, I would like to talk to MCU via Bluetooth directly. If I use NodeMCU or ArduinoNano, I would have...
  9. Khisraw

    Offsetting input voltage in PICAXE-08M2 MCU

    Hi, I am connecting a sensor to PICAXE08M2 MCU. The sensor is read in pin C.4 and when it is off is 1.8V and 5V when it is fully ON. I need to offset the 1.8V. I need to write the codes in Basic. The ADC is 8 bit and the maximum value would be 255. My codes are below. Main: Readadc C.1...
  10. A

    Why the initial state of Bistable multivibrator using 555 timer is coming high?

    I want to make a circuit for triggering the STM32 microcontroller into the Bootloader mode. For normal operation of MCU using flash memory the BOOT0 pin should be low and for entering the bootloader mode the BOOT0 pin should be pulled high. Presently I am using Bistable multivibrator using 555...
  11. M

    Amplitude modulation with MCU and NE 555

    Hi, I want to build an IR transmitter (~ 38kHz). My plan is to use a NE555 timer to generate the carrier wave (A-stable Operation), modulate it with a micro controller, and transmit modulated signal via IR LED. My question: Can I connect the micro controller output pin directly to the CONT...
  12. Khisraw

    Controlling AC powered devices

    Hi All, As an electronics engineer, I have always worked with low voltage circuits and found it very difficult to control high voltage, AC powered devices. In my last project, I needed a power board that I can just plug my MCU or DSP and control an instrument that needs high power. I wanted an...
  13. I

    T.I. BLE USB MCU Programming Trouble (CC2540)

    Hello Everybody! I am trying to program/communicate with the CC2450 BLE IC, which is a transceiver/microcontroller. My computer is having trouble recognizing the device. It does not show up in Device Manager. I've tried the T.I. tools for trying to communicate with it. I've downloaded the BLE...
  14. Younes Thabet

    How to identify a microcontroller with unclear part number!?

    Hello All, I have been looking to identify a microcontroller that has two series of numbers (2 lines) and no manufacturer's logo, I know that one of this serial numbers dictates manufacturer's info and the other one is part number but I have searched both numbers on the internet with no luck...
  15. Just Bucket

    High quality audio recording with MCU

    Hi everyone. I am something like a musician, but I also like to experiment with electronics a lot. I own a BOSS looper pedal, but it kinda doesn't fit my needs as well as I firstly thought. Recent days I was thinking abou whether is possible to somehow utilize some sort of MCU or just some ARM...
  16. kjrr.2136

    Arduino Wifi/IR Universal remote with "ADD" button

    I want to build a ir cloner and transmitter for electronic devices (tv, home theatre,AC,etc) with NODE MCU so that i can control all the devices over wifi with my phone. There are may tutorials for making this type of project but all of them include manually inputting the "ir code"(not sure...
  17. vikrantsingh47

    Which is better, STM32 Nucleo or ESP32?

    I am looking to make some projects like rover, drone etc. And after i get comfortable, i might try other types of iot projects and machine learning projects. which mcu should i choose? i have already made some projects with arduino uno and esp8266, but some people have suggested to go with other...
  18. C

    Is there any FOC Software available for STM32 Nucleo-64 G474RE board?

    Hi everyone, I have recently bought an STM32 Nucleo-64 G474RE. I want to use this MCU for Field-Oriented Control (FOC or Vector Control) with a BLDC motor. I have seen there are many libraries available and there is the ST Motor Control Workbench tool available. But I am confused as to which...
  19. N

    8051 microcontroller operating like Solitaire - University Assignment

    I was tasked with creating a certain 8051 microcontroller project by my professor and I am keen to build the project all by myself, however, in order to carry out the given assignment, I may need some expert guidance. The project description is provided in below paragraph. The microcontroller...
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