diy projects
Two ESP32s Talk Over Light Using Just One LED Each
SecurePair lets two ESP32 boards pair and swap encryption keys over visible light, with one LED per board doing double duty as sender and…
diy projects
Wireless ESP32 Bike Brakes: ABS From Car Door Lock Actuators
A fat-bike brake with no cable at all: ESP32 nodes talking over ESP-NOW drive car door lock actuators, unlocking ABS and an adjustable bite…
diy projects
ESP32 Bowling Scoring System Beats a $120K Proprietary Quote
An engineer replaced a $120,000 bowling scoring system with $1,600 of ESP32 boards, ESP-NOW mesh, and a Raspberry Pi. Here is how OpenLaneLink works.
diy projects
ESP32 Mesh Replaces a $120k Bowling Scoring System for $1,600
An abandoned 8-lane bowling center needed an $80k scoring system. One builder replaced it with an ESP-NOW mesh of ESP32s for about $1,600 instead.
diy projects
Build Your Own ESP32 Walkie-Talkies With ESP-NOW
A pair of XIAO ESP32S3 boards plus ESP-NOW make 3D-printed walkie-talkies that hold a voice link past 200 meters, no Wi-Fi or cell signal…