TigerScale — Web Installer

⚠️ Browser not supported ESP Web Tools requires the Web Serial API, which only works in Chrome, Edge, Brave, or Opera. Please open this page in one of those.

Install in 60 seconds

1 · Plug in your ESP32 via USB Use a data cable (not charge-only). Your ESP32 should be detectable by the operating system.

2 · Click "Install" below A popup asks which serial port to use. Pick your ESP32 — typically cu.usbserial-XXXX on macOS, COMx on Windows, or ttyUSB0 on Linux.

3 · Wait ~60 seconds The browser flashes the firmware (1.3 MB) and the web interface (900 KB). Don't unplug while it runs.

4 · Configure Wi-Fi The scale boots into setup mode. Connect your phone to the Setup-TigerScale-XXXX Wi-Fi and follow the captive portal.

Having trouble? See TROUBLESHOOTING.md

What gets installed?

Firmware (~1.3 MB) — the C++ code that runs on the ESP32
Web interface (~900 KB) — the page you'll see at tigerscale-XXXX.local
Bootloader + partition table

Your existing settings (Wi-Fi, Firebase login, calibration) are preserved across firmware updates.

Hardware shopping list

Everything you need to build your TigerScale. Affiliate links — buying through them helps fund the project at no extra cost to you.

ESP32 Development Board

KEYESTUDIO ESP32-WROOM-32 (Wi-Fi + Bluetooth)

ESP32-WROOM-32 Wi-Fi Bluetooth

View on Amazon
OLED Display Module

ELEGOO 0.96" 128×64 I²C self-luminous

×3 modules 128×64 I²C

View on Amazon
RFID Reader Module (RC522)

13.56 MHz RF/IC card induction, SPI

×5 modules 13.56 MHz SPI

View on Amazon
Dupont Jumper Wires

ELEGOO 120 pcs 28 AWG 20 cm (M-M, M-F, F-F)

120 pcs 3-in-1 20 cm

View on Amazon
Load Cell + HX711

Wishiot 5 kg high-precision load cell with HX711 amplifier

×2 sets 5 kg HX711

View on Amazon
Continuous Servo (FS90R)

Wishiot 360° continuous rotation, FS90R compatible

×1 360° PWM

View on Amazon
Active Support Shaft Assembly

Bambu Lab AMS active shaft (drives the spool rotation)

×1 Bambu Lab AMS

Buy at Bambu Lab
Driven Support Shaft Assembly

Bambu Lab AMS driven shaft (spool follower)

×1 Bambu Lab AMS

Buy at Bambu Lab

Full BOM and 3D-printable parts: hardware/BOM.md · As an Amazon Associate, we earn from qualifying purchases.

Don't trust the browser to flash your device?

The TigerScale firmware is fully open-source. You can:

Read every line of code on GitHub
Compile and flash it yourself with PlatformIO or Arduino IDE
Verify the SHA256 of the published binaries against your own build

The Web Installer is just a convenience layer — it uses the Web Serial API sandboxed by your browser. The page only sees your USB device when you explicitly grant access via the browser popup.

Install in 60 seconds

What gets installed?

Hardware shopping list

ESP32 Development Board

OLED Display Module

RFID Reader Module (RC522)

Dupont Jumper Wires

Load Cell + HX711

Continuous Servo (FS90R)

Active Support Shaft Assembly

Driven Support Shaft Assembly

Don't trust the browser to flash your device?