A practical map of TinyML on the ESP32 in 2026: which variant to use, the three application classes that work, real memory and latency...
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eARgle Innovation Labs · Blog
Sensors, boards and builds that actually work
Deep technical guides from the eARgle bench — pinouts, wiring, working firmware and the failures we hit on the way. Written for people building real hardware, not copying tutorials.
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Sensors
Ultrasonic, IMU, gas, temperature, soil — wiring, calibration, working code and the traps.
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Boards
ESP32, ESP8266, Arduino, RISC-V: pinouts, power, toolchains and honest comparisons.
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Projects
Complete build logs — bill of materials, firmware, field results, what went wrong.
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New Tech
Edge AI, TinyML, Matter, RISC-V and low-power wireless — what is real and what is hype.
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The guides people come back to — each one written from hardware on the bench.
Boards
µEC3 Board Guide: ESP32-C3 Pinout, Power and First Upload
Interactive pin explorer for all 18 pads, power rules, four tested sketches and the seven mistakes that cost people an evening.
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Sensors
HC-SR04 Ultrasonic Sensor: Wiring, Code and Real Accuracy
Three levels of code, temperature compensation, beam limits, and a troubleshooting table built from real failures.
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Boards
ESP32 vs ESP8266 vs Arduino Uno R4
The decision rules, which ESP32 variant to actually buy in 2026, and real battery-life numbers.
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Projects
Smart Irrigation with ESP8266: Full Build Log
BOM, power architecture, calibration, fail-safe firmware — and eight weeks of field results.
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New Tech
Edge AI on the ESP32: What Actually Runs on a Microcontroller
Which variant to use, the three application classes that work, real memory and latency budgets.
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Everything we publish, newest first. New posts appear here automatically.
Smart Irrigation with ESP8266: Full Build Log and Firmware
Bill of materials, power architecture, sensor calibration and fail-safe firmware for an ESP8266 irrigation node — plus eight weeks of field results, including everything...
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ESP32 vs ESP8266 vs Arduino Uno R4: Which Board to Use
Not a spec dump — the decision rules. Head-to-head specifications, which ESP32 variant to actually buy in 2026 (C3, S3, C6, C5, H2, P4),...
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HC-SR04 Ultrasonic Sensor: Wiring, Code and Real Accuracy
The HC-SR04 is a stopwatch attached to a loudspeaker, not a rangefinder. Wiring for Arduino, ESP32 and ESP8266, three levels of code, temperature compensation,...
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µEC3 Board Guide: ESP32-C3 Pinout, Power and First Upload
A complete working reference for the µEC3 ESP32-C3 board: full specs, an interactive pinout explorer for all 18 pads, power rules, the first Arduino...
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Learn. Build. Innovate. Why We Built eArGle Innovation Labs
Technology is evolving faster than the way most people are taught it. eARgle Innovation Labs exists to close that gap — learning by building...
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