# BIQU AJAX TD1S

> Filament Transmission Distance (TD) and HEX color measurement tool for 3D printing. Captures true filament color and TD values for HueForge integration to build accurate filament libraries and fix color shifts in multi-color prints.

## Quick Facts

- **Brand:** BIQU
- **Board Type:** measurement-tool
- **Price:** ~$79.99
- **Product Readiness:** consumer
- **CPU:** Embedded measurement MCU
- **CPU Architecture:** ARM Cortex-M 32-bit
- **CPU Cores:** 1
- **RAM:** No
- **Flash:** No
- **USB:** USB Type-C
- **Power:** 5V
- **Operating Voltage:** 5V
- **SD Card:** No

## Open Source

- **Firmware:** No
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

HueForge

## Use Cases

- multi-color-printing
- filament-profiling
- 3d-printer
- maker-projects

## Components

- **Color Sensor** (sensor): Precision optical sensor for capturing filament true HEX color and Transmission Distance (TD) values for HueForge filament library creation — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-td1s&ref=openhardware.directory&product=biqu-ajax-td1s&source=md-export)
- **Calibrated Light Source** (led): Integrated calibrated light source for accurate filament color and transmission measurements — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-td1s&ref=openhardware.directory&product=biqu-ajax-td1s&source=md-export)

## Protocols

- **USB 2.0**

## Description

The BIQU AJAX TD1S is a specialized filament measurement device that captures two critical values for photorealistic multi-color 3D printing: Transmission Distance (TD) and true HEX color. These measurements are the foundation of HueForge — a tool for creating accurate multi-color print profiles that simulate real-world filament light transmission behavior.

The TD1S removes the guesswork from building filament libraries. By placing a filament sample into the device, users get an instant, precise TD value and HEX color code that can be imported directly into HueForge. This eliminates the manual trial-and-error calibration process, dramatically speeding up the workflow for creating accurate filament profiles and achieving consistent color results in multi-color prints.

At $79.99, the TD1S targets makers and professionals who regularly work with multi-color printing using tools like HueForge, Orca Slicer, or Bambu Studio. It is the BIQU AJAX branded product line, distinct from standard BigTreeTech 3D printer electronics. The device bridges the gap between real-world filament properties and digital slicer profiles.

## Where to Buy

- [BIQU Equipment](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-td1s&ref=openhardware.directory&product=biqu-ajax-td1s&source=md-export) — $79.99

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-td1s&ref=openhardware.directory&product=biqu-ajax-td1s&source=md-export)

## Tags

`filament-measurement`, `hueforge`, `multi-color-printing`, `color-sensor`, `transmission-distance`, `biqu`, `3d-printing-tools`, `ajax`

## Images

![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/de60762b00f3.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/37f4aa4371f1.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/89801169e343.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/92bb290eaa3d.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/f6b242baaa23.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/e304624b3300.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/f9649133a758.jpg)
![BIQU AJAX TD1S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/biqu-ajax-td1s/2b6b451d7ead.jpg)

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