UWB on Raspberry Pi: Reading Indoor Coordinates with Python
GPS falls apart the moment you push a robot through a warehouse door. Satellite signals don’t get through roofing and steel, so the coordinate that looked solid in the parking lot starts drifting the second you go inside. Wi-Fi and BLE trilateration will hand you something, but it wanders by three to five meters. Fine […]
UWB vs BLE vs GPS: Which One for Indoor Positioning?
You already know the concepts. Now you have to pick one. That is the hard part. On paper, UWB, BLE, and GPS all promise to tell you where something is. In practice they answer very different questions, at very different price points, with very different accuracy. Choose wrong and your prototype either bleeds budget or […]
UWB Arduino Positioning: How to Get Real X,Y Coordinates
Most “uwb arduino” tutorials stop at distance. You wire up two off-the-shelf UWB modules, run an open-source ranging library, and the serial monitor prints a number in meters. Then you try to turn three of those distances into an actual point on the floor, and the whole thing falls apart. That gap is the reason […]
UWB Smart Key, Getting Truly “Smart” with UWB Technology
Hello, this is Freegrow. Today, you do not need to take the car key out of your pocket. You touch the door handle, and the car opens.You press a button, and the engine starts. This convenient feature comes from the smart key. Recently, a more advanced smart key using UWB (Ultra Wideband) technology has appeared […]
Why Samsung Can’t Give Up on UWB Technology — Moving Beyond Smartphones Into Spatial Computing
Hello, this is Freegrow! These days, when you search for the term “UWB,” most of what comes up is about smartphones — Galaxy Z Flip, SmartTag, and iPhone. What’s interesting, though, is that even though this technology isn’t widely used yet, Samsung still hasn’t given up on UWB (Ultra-Wideband). Why is that? Is it simply […]
UWB Indoor Positioning : How to Install Anchors for Better Z-Axis Accuracy
Anchor installation is the step most teams underestimate when their UWB results come out wrong. Hello, this is Freegrow 😊When you set up a UWB-based indoor positioning system, most people only think about the XY plane. But what if you need height (Z-axis) information? For example, worker safety, drone position, or separating multi-level spaces. With […]
RTK GPS vs GPS: What’s the Difference? Accuracy and Use Cases Explained
Hello, this is Freegrow. Today, we’re going to take a closer look at one of the questions many people ask: what’s the difference between GPS and RTK GPS? We’ll break it down in a simple way and also share the latest use cases as of 2025. Among all the positioning technologies we use every day, […]
RFID vs UWB: Which is Best for Indoor Tracking?
RFID vs UWB: Indoor Positioning Technology Comparison & Optimal Solution Guide Indoor positioning technology plays a key role in various industries such as logistics, security, and smart offices.Particularly, RFID (Radio Frequency Identification) and UWB (Ultra-Wideband) are the most widely used technologies,requiring careful consideration of their strengths and applications for appropriate selection. So, what are the […]
UWB Technology: Ultra-Precise Indoor Positioning Beyond Bluetooth and Wi-Fi
Recently, the need for precise indoor positioning technology has been increasing across various industries such as smart factories, logistics, healthcare, and autonomous robots. Traditional wireless communication technologies such as GPS, Wi-Fi, and Bluetooth have limitations in indoor environments, making stable and accurate positioning difficult. As a solution, Ultra-Wideband (UWB) technology is gaining attention. This document […]
What is RTLS? Principles and Applications of Real-Time Location Tracking
We are living in an era where technology and space are becoming increasingly interconnected. In particular, real-time location information is rapidly evolving to optimize space and improve operational efficiency. At the core of this transformation is real-time location tracking, commonly known as RTLS (Real-Time Location System). RTLS is a key technology that enhances operational efficiency […]