# CHA-81 DIY kit, 9x9 LED matrix, graphic effects

> CHA-81 DIY kit for assembling a 9x9 LED matrix with graphic effects, suitable for educational projects and interactive prototypes. Includes PCB and all electronic components, with assembly and polarity markings printed on the board. Operates at DC 5V-9V, powered via USB or external battery (not included). Supplied unassembled and requires soldering.

- Page: https://sigmanortec.ro/en/cha-81-diy-kit-9x9-led-matrix-graphic-effects
- Price: 44.81 RON
- Availability: In stock; 1-2 zile
- Reference: 9629 · EAN: 5942351476415
- Category: Mechatronics and IoT > The Kit > DIY Electronics Kits
- Package (shipping data): 0.075 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:49 (Europe/Bucharest)

## Description

DIY kit for assembling a 9x9 LED matrix with graphic effects, ideal for educational projects and interactive prototypes. Includes PCB and all electronic components, mounting and polarity markings are printed on the board for easy soldering. Operates at 5-9V and can be powered by USB or external battery for flexible use.
The CHA-81 kit is a complete DIY kit that contains all the components needed to assemble an LED tracking light. This kit offers the possibility to create and customize your own tracking light in an interactive and educational way. The kit can be powered via a USB connection or via a battery.
The kit comes unassembled and requires tinning. All the elements to be mounted, as well as the polarity of the components, is marked directly on the PCB board.
Specifications:
Supply voltage: DC 5V-9V
Type: DIY kit, unassembled
Power Options:
USB Connection: The kit can be powered directly via a USB cable connected to a USB power source such as a computer, phone charger or external battery.
Battery: The kit can be powered by an external battery (not included in the kit). This offers an option of portability and flexibility in use.
Components included:
LEDs: The kit contains high-brightness tracking LEDs, which can produce a concentrated and directed beam of light.
Printed Circuit Board (PCB): A printed circuit board
The electronic components that are mounted on the PCB
Use: