Automic LED

Design of a microscope capable of positioning and moving along the XYZ axes, using high-accuracy motion transmission systems. The microscope is equipped with an LED light source of different wavelengths, The microscope is illuminated axially by a surface-mounted LED, which contains different colours, including red, green, blue, white, violet and yellow. The LED is powered by a variable voltage source from a pulse-width modulation (PWM) signal to analogue voltage converter. The PWM signal is supplied by the PCA9685 controller, which has 16 control outputs and communicates with the NVIDIA Jetson Orin Nano board via I2C through port 2. This multi-colour LED system was replicated in the observation base of the system, where the sample is placed. The system incorporates six distinct individual controls for each of the three 6-colour LED units. The two missing lines, in addition to the supplementary controls incorporated into the device – such as the light inside the machine and the endstops sensors – are managed and interpreted by an Arduino Nano development board. This board communicates with the NVIDIA Jetson Orin Nano board via I2C through port 1. The control app has been programmed in Python 3 and is supported by the Jetson Orin Nano artificial intelligence card. In order to construct and implement this work, the traction and motion system was modelled in 3D program Fusion 360, incorporating both commercial components and bespoke designs, which were then processed using a resin 3D printer Photon Mono 2. Subsequently, the equipment was electronically instrumented using TMC2209 stepper motor driver to control traction.