CcircuitrocksOct 6 · 3 min readTwo ESP32s Talk Over Light Using Just One LED EachCan one LED both send and receive data between two ESP32 boards? Luca Soltoggio's SecurePair project says yes, and it works with the same ordinary 5 mm LED you probably have in a parts drawer. What thcircuitrocks.hashnode.dev
CcircuitrocksAug 30 · 3 min readWireless ESP32 Bike Brakes: ABS From Car Door Lock ActuatorsCutting the cable on a bicycle brake sounds like a bad idea until you see what the ESP32 does with the freedom. Berm Peak strapped a radio link between the levers and the calipers of a fat-tire bike, circuitrocks.hashnode.dev
CcircuitrocksJul 23 · 2 min readESP32 Bowling Scoring System Beats a $120K Proprietary QuoteA site reliability engineer bought an abandoned eight-lane bowling center in a small Midwestern town for \(105,000. The roof leaked, the electrical service was flaky, and the pinsetting machines were circuitrocks.hashnode.dev
CcircuitrocksJul 21 · 3 min readESP32 Mesh Replaces a $120k Bowling Scoring System for $1,600What do you do when the quote to fix your bowling alley's scoring comes back at \(80,000?A Hacker News poster going by section33 bought an abandoned 8-lane center and got exactly that number, with parcircuitrocks.hashnode.dev
CcircuitrocksJun 13 · 2 min readBuild Your Own ESP32 Walkie-Talkies With ESP-NOWOff-grid communication keeps creeping back into the maker spotlight. As mesh radios like Meshtastic, LoRa pagers, and DIY intercoms gain followers, more builders are asking a simple question: how littcircuitrocks.hashnode.dev
AAyushi LathiyaDec 25, 2024 · 2 min readA Guide to ESP-NOW: Unidirectional CommunicationUnderstanding the ESP-NOW Protocol What is ESP-NOW? ESP-NOW is a wireless protocol developed by Espressif for low-power, low-latency communication devices based on the ESP32/ESP8266. It supports peer-to-peer communication and is ideal for IoT appl...ayushilathiya.hashnode.dev
