Home
Feed

Extend

Hashnode Pro
Hashnode for Agents

Resources

The foreword
Hashnode gql skill

Buildful - AI coding agent that delivers frontier-level results at a fraction of the cost Bug0 - The AI-native e2e QA regression testing Hackathons Changelog Brand @hashnode on X Hashnode on LinkedIn Support - hello+support@hashnode.com Code of Conduct Terms Privacy Sitemap

Sign in

Search Hashnode

Search posts, tags, users, and pages

Tag

#pir-sensor

0 posts·0 followers

Trending tags this week

Explore Hashnode

Alternatives

Hashnode vs Medium
Hashnode vs WordPress
Hashnode vs Ghost
Hashnode vs Substack
Hashnode vs Notion
Hashnode vs Dev.to
All alternatives

Changelog
Sitemap
Terms
Privacy

© 2026 Hashnode

Trending tags this week

#ai 220 posts
#python 116 posts
#security 113 posts
#devops 103 posts
#webdev 91 posts
#javascript 89 posts
#productivity 71 posts
#web-development 67 posts
#cybersecurity 65 posts
#api 65 posts
#artificial-intelligence 64 posts
#automation 61 posts
#ai-agents 56 posts
#tutorial 55 posts

circuitrocks·Oct 23

Build a Motion-Triggered Haunted Box with an ESP32 This Weekend

Motion-Triggered Haunted Box ESP32: A PIR sensor, a servo and a red LED stick turn an ESP32 into a jump-scare box.

2 min read·circuitrocks.hashnode.dev