Questions tagged [microcontroller]

A microcontroller is a small computer on a single integrated circuit, similar to a SoC. Often used for DIY automation and embedded systems. Use the [micro-pc] tag for single board computers designed to run regular operating systems

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Microcontroller that can update firmware from a hosted or OTG USB FS flash drive

I'm developing a data logger that I'd like to be field upgradable from a USB flash drive. So I'm looking for an ARM Cortex (M0, M0+, M3, or ??) based microcontroller with USB Host or OTG capability ...
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17 views

a hardware for resetting system by microcontroller

I know there are some circuits on the internet which can do that but I want more specific one. What I want I have a board which works as described in this image: now I want to reset the system by ...
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NFC Reader for Java Card except PN532

I want a reader that can communicate with Java Card through APDU. I know PN532 can do this but its prices of are increasing day by day as it becomes obsolete. I was thinking of RC522 but I am not sure ...
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Looking for cheap MCU for projects

I'm currently learning MCUs with TMS570, but I'm also looking for some cheap mcu for general projects. Can you advice me on choosing something: 1) Cheap 2) Easy to buy in CIS (Russia and Ukraine, so,...
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Small speaker and display for microcontroller

I am looking to make a small video display (with or without sound) in the back of an A5 notebook, using a microcontroller. I am looking for a total below 40USD, so preferably it can be found on ...
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What device should i use in this situation

I need a device that can act as a server (accept and send HTTP requests), and display an image. I want it to be as cheap as possible. I know i can use a Raspberry Pi, but i need something cheaper. I'...
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More powerful ESP9266 based microcontroller than nodemcu

I am currently working with Nodemcu. I am running a very long code with many HTTP requests. After 3 http requests, the nodemcu gets crashed. It is unable to handle. I am looking for a WiFi ...
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8 views

10 - 3000 rpm Motor

I need a motor that could have a 10 to 3000 rpm speed, the torque is not important to me. I did not find a motor that combines low speed and high speed... I already have a 4:1:1 planetary reducer but ...
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3.3 V STM32 communicating with 1.8 V sensors

I am using an STM32F407VG (datasheet : https://www.st.com/resource/en/datasheet/stm32f407vg.pdf page 46 ) and it needs to communicate with sensors working at 1.8 V. The STM32F407VG is supplied with 3....
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Connect a switch to my PC for a buzzer type of app

I want to write an app that assesses your reflexes. Basically it makes a sound you have to punch a target and the programme tells you your reaction time. I am not sure what to use for the target part. ...
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Best ultra low power microcontroller to run with solar panel

I am starting a project which will control a small motor, some LED for illumination and read some analog sensors and I need to power it via a solar panel. I am looking for the best option on ...
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Does someone know a microcontroller that has a micro-sd slot and at least two UART ports?

I need microcontroller that has a micro-sd slot (It is fine if it only supports up to 4GB sd-cards.) and at least two UART ports in addition to the USB main port. It doesn't matter what kind of ...
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Electronics used for calculating

Ok, so I know the title might be misleading, but I don't know what to put there so I'll try to be as detailed as I can in the description. I need a sort of a microchip that can be connected to analog ...
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Arduino Leonardo or ESP32 or ESP8266

I want to create a device simulating a wireless keyboards but I'm not sure which platform to use. Arduino Leonardo can simulate a keyboard functionality but has no embedded WiFi or Bluetooth module. ...
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System for vending telemetry

I'm looking for a vending telemetry system that can be programmed by the buyer. Nowadays everybody wants to sell you their telemetry system with their own cloud-based software system. We don't want ...
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LED-matrix boards with matrix circuit

I am looking for LED-matrix board that have an matrix interface instead of the shift-register interface that you find everywhere. So something like this: https://www.circuitspecialists.com/blog/build-...
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Looking for a microcontroller for embedded OS

I'm looking for an MCU with development board on which I can build a small embedded OS. I'm looking for something along these lines: At least single digit MBs of EEPROM or flash. About 1MB or so ...
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33 views

Best low cost microcomputer for running Unity app + webcam

I have an art installation I want to build that uses software written in Unity, implementing opencv and using a webcam, and displaying on some sort of inexpensive monitor. I can compile to Android/iOS/...
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Hobbyist microcontroller without code write endurance worry

I'm looking for a hobbyist microcontroller that can have its code modified very frequently (like code generated on the fly, or polymorphic code), without worrying about running out of write cycles. ...
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Portable camera with bluetooth or some other wireless technology support

I want to find a tiny camera or camera module that can stream its videos via Bluetooth or other wireless technology. I want to use that camera as an accessory that can be attached to a body part. The ...
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Budget Microcontroller for large WS2812B strand

I am using an Arduino Uno R3 to control my Christmas lights (a strand of 665 WS2812B LEDs).The Arduino, while driving the LEDs, is not accessible from my PC, so I am attempting to use a Raspberry Pi 3 ...
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141 views

RFID solution for reading multiple tags

I am working on a Robot-project where a sub task is have to check how many and which RFID-tags are placed in a bucket. Multiple tags will be placed into the bucket - so I run into the problem with ...
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357 views

Cheapest microcontroller with wi-fi

Requirements: 1. Should be able to run C++ programs 2. Price should be less then 20$ (better if <=10$)
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IC chip which can send a different IR signal from multiple pins

Hi I have been trying to send different IR signals over multiple pins using an Arduino Uno. I have been using the IRremote library. It's not possible with Arduino so I am looking for an alternative. ...
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51 views

Microprocessor that can connect to the internet

I am looking for a microprocessor (Arduino, Raspberry pi, etc..) that can connect to the internet. Currently I am using a Photon by particle. This small device allows me to connect the the internet ...
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133 views

dev board with 3 or more mipi-csi

I'm looking for "NVIDIA Jetson TX1" module alternatives for 360 video capturing main requirements - 3 or more 4 line mipi-csi with ability to transfer 4k from each camera and sata or 10g ethernet phy ...
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Confuse-a-cat : seeking dirt cheap, wheeled, programmable robot

I was playing the old "confuse the cat with a flash-light" game, when I thought that I might like to program a confuse-a-cat robot. Something, probably with tracks, which can right itself if he flips ...
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12k views

Which cheap microcontroller with Wi-Fi to choose for IoT endpoint devices?

I want to gather data from multiple sensors, make simple operations on them (like store last samples in a buffer, calculate moving average, etc.) and send them to the Internet of Things cloud using ...
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Low-power 8 bits microcontroller

For a personnal project, I intend to design a board with a temperature sensor, an MCU and a wireless "connector". I would like to have that board powered by battery. The wireless technology is not yet ...