// Thermal PCB Inspection
HotSpotter turns your USB thermal camera into a professional PCB inspection tool. Calibrated temperature readings, real-time thermal imaging, and multi-camera support — all in a clean Windows desktop app.
// Features
Built for electronics engineers who need accurate, actionable thermal data — not consumer gimmicks.
Real-time calibrated thermal imaging from your USB camera. Full-frame streaming with configurable color palettes to reveal temperature gradients the moment you point the camera.
Pixel-accurate temperature measurement at cursor position. Uses proper raw sensor conversion (raw ÷ 64 − 273.15 °C) for scientifically meaningful readouts you can trust.
Works natively with InfiRay A1T, Topdon HT-301 (UVC) and Thermal Master P3 (vendor protocol), with more cameras being added. Plug in your hardware and HotSpotter handles the driver details.
NUC (Non-Uniformity Correction) support for consistent flat-field thermal accuracy. Per-camera lens configuration presets with user-editable profiles stored locally.
// See It In Action
Pi 5 PMIC and surrounding components heating up — 4× speed
// Real-World Results
An SP4T RF switch in a flip-chip QFN package, with DC current applied through one path to generate localised heating. HotSpotter resolves individual bond pad traces and pinpoints the die hot spot through the package — the kind of measurement electronics labs run every day.
Click an image to enlarge
Built on precise shapes, offering a structured and balanced visual rhythm.
Typography is the silent ambassador of your design. Choosing the right typeface can elevate a project from amateurish to professional instantly. Among the modern geometric sans-serif typefaces gaining traction today, Ultrex stands out. Its clean lines, balanced proportions, and high readability make it a favorite for both web and print designers.
Search for "techno" or "pixel" styles. Many fonts in this category offer free personal use, and the .ttf file can be treated as a portable font.
If you have downloaded the Ultrex font file (e.g., ultrex.ttf ), you can use it immediately without installing it: ultrex font free download portable
In the world of graphic design, certain typefaces define an era. The 1980s and early 1990s were marked by the rise of digital computing, arcade games, and sci-fi aesthetic, often characterized by blocky, futuristic, and monospaced fonts. is a prime example of this genre—a bold, tech-inspired font that brings an immediate retro-futuristic feel to any project.
In a traditional workflow, fonts are installed directly into the operating system's root directory ( C:\Windows\Fonts on Windows or Library/Fonts on macOS). However, a solution offers distinct advantages for modern, flexible designers. Why Choose Portable?
A "portable" font refers to a font file format or distribution method that requires no system-level installation. Standard fonts must be installed into the operating system's root directories (such as C:\Windows\Fonts on Windows or /Library/Fonts on macOS). Portable fonts, however, can be run directly from an external storage device, a cloud folder, or temporary local directories. Benefits of Portable Font Workflows Built on precise shapes, offering a structured and
Place the .otf or .ttf files into the Creative Cloud Files/Fonts folder to automatically sync across your apps.
If you are searching for an , or need a portable solution for on-the-go designing, this comprehensive article will cover everything you need to know. What is Ultrex Font?
Downloading a font like Ultrex in a portable format reflects a desire for workflow mobility Many fonts in this category offer free personal use, and the
Ultrex is generally available in TrueType (.ttf) and OpenType (.otf) formats. These formats are inherently "portable" in that the files themselves can be carried on a USB drive and temporarily loaded on most modern operating systems.
: Be sure to check if the version you download is "Free for Personal Use" or "100% Free" (which includes commercial use). If the license is unclear, it is safer to avoid using it for professional projects.
// Supported Cameras
HotSpotter supports popular hobbyist thermal cameras out of the box. Don't see yours listed? Contact us — new camera support is actively being added.
Compact 256×192 USB thermal camera. Plug-and-play UVC class device — no custom drivers required on Windows 10/11. Units are manufactured by Link-Card and may carry InfiRay sensors.
UVC · USBHigh-resolution USB thermal camera with vendor protocol. 640×512 native resolution. Requires USB 3.0 for full frame rate.
Vendor Protocol · USB 3.0Compact 384×288 USB thermal camera with InfiRay sensor. UVC class device — works out of the box on Windows 10/11.
UVC · USBAdditional camera models are under development. Contact us with your camera model to request support.
Request via email// Pricing
Machine-locked license key. No account needed. Hardware sold separately — contact us to enquire.
HotSpotter Annual
Per year · Machine-locked · One seat
HotSpotter Lifetime
One-time · Machine-locked · One seat
Join the mailing list for hardware kit availability
// Getting Started
Manual license activation keeps things simple and secure. No account needed.
Complete checkout and download the HotSpotter installer from the link in your confirmation email.
Install and launch HotSpotter. Open the License dialog from the Help menu and copy your unique Machine ID.
Email your Machine ID to [email protected]. Receive your license key within 24 hours. Enter it once and you're done.
// System Requirements
HotSpotter is a lightweight Windows desktop application with minimal dependencies.
Operating System
Windows 10 or 11
USB
USB 3.0 port
Camera
Supported thermal camera