---
title: "Sukhdeep Hunjan (@sukhsingh) | Hashnode"
description: "I have worked across multiple industries in web and mobile application development, supporting both enterprise platforms and product-based solutions. My focu..."
url: "https://hashnode.com/@sukhsingh"
---

@sukhsingh

# Sukhdeep Hunjan

@sukhsingh · Delhi, India · Joined March 2026

### [How Bluetooth Low Energy (BLE) Actually Works: Architecture, GAP, GATT and Device Roles](https://sukhdeep.hashnode.dev/how-bluetooth-low-energy-ble-actually-works-architecture-gap-gatt-and-device-roles?utm_source=hashnode&utm_medium=feed)

A practical guide to Bluetooth Low Energy connectivity covering Central and Peripheral roles, device discovery, GATT services, characteristics, and re

8 min read · [sukhdeep.hashnode.dev](https://sukhdeep.hashnode.dev/how-bluetooth-low-energy-ble-actually-works-architecture-gap-gatt-and-device-roles?utm_source=hashnode&utm_medium=feed)

[Mar 18](https://hashnode.com/posts/how-bluetooth-low-energy-ble-actually-works-architecture-gap-gatt-and-device-roles/69ba37f1c22d3eeb8a37dc4d)