r/arduino

Community Overview
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reddit.com/r/arduino/
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About r/arduino

An unofficial place for all things Arduino! We all learned this stuff from some kind stranger on the internet. Bring us your Arduino questions or help answer something you might know! 😉

The community at a glance

r/arduino is a Subreddit for Hardware and Robotics Enthusiasts with roughly 791K members. It uses a forum format for communication. On the Hive Index it ranks #7 in the Robotics communities list and #10 in the Hardware communities list.

Roughly 60K members have joined in the past year. Popular discussion topics include Arduino, Struggling, and Project. Product recommendations often mention arduino, sensor, and motor driver.

On Reddit
791K Members

Community Topics

Community Features

Forum

This community has a forum

Subreddit Analysis

via GummySearch
Yearly: +60K members
Growth: +8.2% / year

Member growth over time

All time (yearly)

  • 2013: 11K members
  • 2014: 15K members
  • 2015: 14K members
  • 2016: 16K members
  • 2017: 21K members
  • 2018: 37K members
  • 2019: 67K members
  • 2020: 70K members
  • 2021: 48K members
  • 2023: 317K members
  • 2024: 51K members
  • 2025: 58K members
  • 2026: 51K members

Past year (monthly)

  • Dec: 5K members
  • Jan: 6K members
  • Feb: 5K members
  • Mar: 6K members
  • Apr: 5K members
  • May: 5K members
  • Jun: 5K members
  • Jul: 4K members
  • Aug: 5K members
  • Sep: 4K members
  • Oct: 3K members
  • Nov: 2K members

Topics

  • Arduino
    220 posts in the past month
    #1
    Arduino
    220
  • Struggling
    63 posts in the past month
    #2
    Struggling
    63
  • Project
    40 posts in the past month
    #3
    Project
    40
  • Esp32
    30 posts in the past month
    #4
    Esp32
    30
  • Hard Time
    28 posts in the past month
    #5
    Hard Time
    28

Flair

  • Look what I made!
    25 posts in the past month
    1. Quantum automatic skittle organizing machine (IKEA skadis-compatible)
    2. How my desk buoy starts up: it tightens its own 8 lines, then follows a live buoy at sea
    3. I built a browser-based Arduino emulator that lets you pause and see every register
    #1
    Look what I made!
    Quantum automatic skittle organizing machine (IKEA skadis-compatible) · How my desk buoy starts up: it tightens its own 8 lines, then follows a live buoy at sea · I built a browser-based Arduino emulator that lets you pause and see every register
    25
  • Look what I found!
    4 posts in the past month
    1. Just an interesting thing about the uno R3.
    2. Why Arduino UNO Q’s dual-brain architecture makes sense for an RL-powered robot duck
    3. What are these?
    #2
    Look what I found!
    Just an interesting thing about the uno R3. · Why Arduino UNO Q’s dual-brain architecture makes sense for an RL-powered robot duck · What are these?
    4
  • Hardware Help
    4 posts in the past month
    1. Small pressure, force, or weight sensor
    2. NEMA17
    3. Help Connecting a Modern Rotary Telephone to an Arduino (Hook Switch + Dial Inputs)
    #3
    Hardware Help
    Small pressure, force, or weight sensor · NEMA17 · Help Connecting a Modern Rotary Telephone to an Arduino (Hook Switch + Dial Inputs)
    4
  • :LightBulb:Project Idea
    3 posts in the past month
    1. Project idea - A dropping spider Halloween
    2. 12v Lithium Battery BMS using Arduino - doable?
    3. Project modules for school engineering projects
    #4
    :LightBulb:Project Idea
    Project idea - A dropping spider Halloween · 12v Lithium Battery BMS using Arduino - doable? · Project modules for school engineering projects
    3
  • Software Help
    3 posts in the past month
    1. Code help- DMX input with DMX shield alongside distance sensor... serial0 issue?
    2. Major delays using SoftwareSerial.h
    3. Can you add a servo (or any output component) in TinkerCAD and change its voltage and current?
    #5
    Software Help
    Code help- DMX input with DMX shield alongside distance sensor... serial0 issue? · Major delays using SoftwareSerial.h · Can you add a servo (or any output component) in TinkerCAD and change its voltage and current?
    3

Product recommendations

  • arduino
    16 posts in the past month
    1. Hi tinkerers! I want to actuate this kick pedal with an Arduino/ESP32 so that the pedal depresses automatically. Nothing should be visible looking at it from top down. What will be the best approach? Just need a steady beat, nothing crazy.
    2. Best and most efficient way of learning to code in arduino IDE
    3. Best and most efficient way of learning to code in arduino IDE
    #1
    arduino
    Hi tinkerers! I want to actuate this kick pedal with an Arduino/ESP32 so that the pedal depresses automatically. Nothing should be visible looking at it from top down. What will be the best approach? Just need a steady beat, nothing crazy. · Best and most efficient way of learning to code in arduino IDE · Best and most efficient way of learning to code in arduino IDE
    16
  • sensor
    7 posts in the past month
    1. Recommend me some Sensor for measure distance
    2. Can anyone recommend a long term smoke detector sensor / circuit?
    3. Can someone recommend an IR temperature sensor?
    #2
    sensor
    Recommend me some Sensor for measure distance · Can anyone recommend a long term smoke detector sensor / circuit? · Can someone recommend an IR temperature sensor?
    7
  • motor driver
    4 posts in the past month
    1. Please recommend a motor driver for a 24v 250watt e-bike motor
    2. What motor controller should I use? Power supply is 24v and 20A while my pair of motors are 24v 10A. The 293/298 controllers often recommended here are under 5A.
    3. Which motor driver would you recommend for this pan/tilt head? Is a L298N board sufficient?
    #3
    motor driver
    Please recommend a motor driver for a 24v 250watt e-bike motor · What motor controller should I use? Power supply is 24v and 20A while my pair of motors are 24v 10A. The 293/298 controllers often recommended here are under 5A. · Which motor driver would you recommend for this pan/tilt head? Is a L298N board sufficient?
    4
View full analysis on GummySearchSynced 11/5/2026

Frequently asked questions

Who is r/arduino for?
Best for Hardware and Robotics Enthusiasts enthusiasts looking for a Reddit-based community with forum discussion.
Is r/arduino free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/arduino have?
Roughly 791K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/arduino on?
r/arduino runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/arduino cover?
On the Hive Index, r/arduino is organized under Hardware, Robotics Enthusiasts.
How do I join r/arduino?
You can join r/arduino by clicking this link, or pressing the "Go to community" button above.
What are the Hardware communities like?
Communities for hardware engineers, electronics hobbyists, and embedded systems developers. Discord and Reddit host communities for Arduino, Raspberry Pi, PCB design, and DIY electronics, alongside more professional spaces for engineers working on commercial hardware products.
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Added 4/18/2026

Monthly Stats

21
Views /mo
(+50%)
19
Visitors /mo
(+36%)
2
Referrals /mo

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