We turn breadboards into working products.
HDH Electronics designs, prototypes, and programs Arduino-based devices and connected IoT systems — from a single sensor node to a fleet reporting to the cloud.
What we build
Four disciplines, one workbench. We handle the whole stack from soldering iron to server.
Arduino Development
Custom firmware, shields, and sensor integration for Uno, Nano, Mega, and ESP32 boards.
FIRMWARESensor & Actuator Rigs
Environmental, motion, and industrial sensors wired, calibrated, and logged reliably.
HARDWAREIoT Connectivity
WiFi, BLE, and LoRa links pushing device data to dashboards and cloud pipelines in real time.
NETWORKCustom PCB Design
Schematic capture through fabrication-ready Gerbers, so your prototype becomes a product.
PCBHow a build moves through the lab
Every project follows the same signal path, from idea to a device you can hand someone.
Design
We scope the sensors, power budget, and connectivity your project actually needs.
Prototype
Breadboard build and bench testing to validate the circuit before anything is fixed in place.
Program
Firmware written, flashed, and stress-tested against real-world conditions.
Deploy
Enclosure, PCB, and cloud dashboard shipped as one working, documented system.
From the workbench
A few systems we've shipped recently.
Greenhouse Climate Node
Solar-powered sensor cluster reporting soil moisture, temp, and light to a farmer's phone every 10 minutes.
Smart Fleet Tracker
GPS + accelerometer units for a delivery fleet, streaming live location to a web dashboard.
Home Automation Hub
Central board bridging switches, sensors, and voice control across a single-family home.
Got a device in your head? Let's wire it up.
Tell us what you're trying to sense, control, or connect. We'll reply with a build plan within two working days.