Questions tagged [arduino]

For questions about the do-it-yourself single-board PC and its add-ons.

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wiznet850 ethernet with Arduino

I have two costume boards based on Arduino mega2560 with wiznet850 ethernet module to send UDP packet over ethernet. one of them has atmega2560 16u-TW and the other one has atmega2560 16u-TH . I ...
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12 views

Accelerometer to detect very small vibrations

I am working on my own little project where I need to do detect CNC machine spindle vibrations. The spindle spinning up to 30000rpm and vibrations expected are less than 1mm. I have purchased lis3dh ...
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1answer
14 views

Speed control table or floor fan prefer with thermostat

I have a floor fan with 3 speeds with ir remote. The remote broke but fan is too old to find a replacement remote. But that's not my problem. The fan has 3 speeds. Sometimes I wake up too cold or too ...
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7 views

IR TOF camera suitable for Arduino or Rasperry pi, for distance measurement

I am looking for a infrared TOF camera sensor: suitable for Raspberry or Arduino (and not a big device, but ideally small to be included in an experimental setup) for distance measurement in the few ...
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45 views

Need a blood-pressure measuring module recommendation for arduino

I need to record blood pressure with a blood pressure cuff interfaced to an Arduino uno module so the data can be logged. I searched the web for a such a device, but could not found anything useful. ...
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46 views

small size Alternative of raindrop sensor

I am thinking of creating a device that will detect water leaking/ water detection. I am currently using this: And this one I want but it is costly and not available on Amazon India or flipkart : I ...
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1answer
31 views

Small Form Factor Thermal Camera

I am Currently Looking for a Thermal Camera which either has an lcd screen which can be be extended away from the camera or simply a high quality thermal camera which can be programed into an lcd. ...
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13 views

Arduino Presence Detector through Glass and Transparent Objects

I'm trying to measure the distance of a glass/transparent object using an IR sensor. Does anybody know of sensors that work for this task? Note: it has to be reasonably small, so ultrasonic sensors ...
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19 views

Arduino Solar GPS tracker

I am looking to create a solar powered GPS tracker for a fleet of rental trailers. I am intermediate Arduino user and comfortable with this platform and would like to base it on this system. ...
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11 views

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

Programmable RFID card

I'm new to RFID technology and cryptography. So, I'm trying to apply light weight cryptography in RFID tags as a part of my project. I'm already able to read and write information in some passive ...
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1answer
24 views

Sending order from ESP32 to Arduino Mega [closed]

I am new here and this my question regarding my graduation project. I want to control the Arduino board from ESP32. For example, a temperature sensor will be connected to the ESP32, when ESP32 read a ...
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27 views

Making a WiFi event recorder

I want to make a stomp box with a single button that will record an event time. I’d like the box to be able to record the event directly to a web database (there are plenty of ways to do this, but I’...
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82 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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1answer
25 views

incremental encoder with added joystick functionality

I was searching the web for days now and just couldn't find what I am looking for. I want to make a remote control for an adressable RGB LED strip using a single knob. It will be controlled by an ...
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1answer
39 views

Programmable Induction Hotplate

I'm looking for an induction hotplate that I can control via my own software. An RS232 port or something similar would be fine, but I don't mind if it's not RS232. As long as I can write a program ...
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1answer
13 views

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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48 views

Which ESP32 board should I use?

I have robot. The brain is an arduino mega with this shield. Pictures are below. Right now I am at the pont where I want to replace the arduino with an esp32. Which esp32 board do you recommend? ...
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26 views

Small device with Bluetooth low energy (BLE)

I need an small device with bluetooth that has to do the following: Have an accelerometer attached and read his data. After x seconds, send the accelerometer data to the paired device over bluetooth. ...
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47 views

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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10 views

Arduino compatible Bluetooth Cat. 1 module

I'm looking to add a Bluetooth module to an Arduino project that I'm working on that will take outdoor temperature measurements. I plan to have several measurement stations over distances of several ...
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1answer
49 views

Mechanism to close a small gate using Arduino

I have a 3' (1 meter) tall plastic gate around my yard. I would like to automatically close it with my Arduino or Raspberry Pi. Not by remote control - I just want it to detect that the gate is open, ...
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245 views

Electronic Deadbolt for Door

I am not sure "deadbolt" is the correct term for what I am looking for. I am searching for the metal piece on the side of doors that extends to lock it, but one that can be controlled electronically (...
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2answers
61 views

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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36 views

What's an accurate and affordable indoor positioning system

TL;DR version I'd like hardware capable of doing these things Triangulate positions of nodes Be accurate down to 1-6 inches Able to see through fairly thin objects, like people/trees Fairly ...
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190 views

Cheapest single computer board with Wi-Fi and audio

I want to build a home-made multi-room home sound system. I'm looking for a single board computer device with a minimal hardware configuration. In my thoughts, my only requirements are: Wi-Fi ...
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1answer
368 views

Hardware components for MESH network with Arduino

I am in the search for some recommendation on a good hardware component for building a mesh network with Arduino I am not experienced in building a mesh network. So all recommendations and guidance ...
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280 views

VPS vs Raspberry Pi and Arduino

I want to implement this project... In the image I have: One and unique analog signal One analog to digital converter The output is carry out to several modules (executing FIR and rewriting the its ...
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58 views

What are good LED boards for an Arduino?

What are some good charlieplexing LED matrix boards for the Arduino that use very few pins? About 3 digital pins would be great. Also, I am looking for a good interface to control the LED matrix.