Embedded Electronics · Bluetooth · IoT
Companion Apps · 3D Printing
Built by Hand. Delivered Wirelessly.
A family-owned electronics studio specializing in BLE firmware, cross-platform apps, and 3D-printed prototypes — from your first idea to a device you can hold in your hands.
About Us
Family-owned.
Engineer-built.
Elsitronics is a father-and-son studio. When you work with us, you talk directly to the people writing the firmware and printing the enclosures — no account managers, no handoffs.
We specialize in Nordic nRF52 BLE development and can take your idea from a napkin sketch to a working prototype you can put in a customer's hands — firmware, companion app, and enclosure included.
Small team, big ownership. We care about your project because our name is on it — every device we ship represents us as a family.
What We Do
Our Capabilities
BLE Firmware
Custom firmware on Nordic nRF52 — GATT profiles, pairing, OTA updates, and low-power optimization. We know this chip well and write tight, reliable code.
Companion Apps
Simple, clean cross-platform apps that talk to your BLE device. We keep scope realistic and build apps that work — not bloated feature lists that ship late.
In-House Fabrication
Pick & place PCB assembly for small prototype runs, plus FDM 3D printing for enclosures and brackets — all under one roof. No waiting on a contract manufacturer for every iteration.
End-to-End Prototyping
From concept to a device you can demo — we handle the BLE hardware, firmware, app, and enclosure as one package. One team, one point of contact.
Our Work
Past Projects
BrainLight
Custom electronics for a professional massage chair system, paired with light-emitting glasses designed to guide the user into deep relaxation. We developed the full embedded control system — from hardware to firmware — synchronizing chair mechanics with dynamic light patterns.
Badass eBike Tuning
Our own line of eBike tuning solutions, developed and sold under the Badass eBike Tuning brand. We handled the full stack — purpose-built electronics, in-house PCB assembly, an online shop, and the Boost Buddy companion app for iOS and Android.
Contact
Let's build something together.
Have a project in mind? Tell us about it — we respond within one business day.