Neuro Vision TFT Getting Started

The Neuro Vision TFT is a carrier for the Neuro N6 that mounts the OV5640 camera module together with an 800x480 colour LCD, a Goodix GT911 capacitive touch controller and a speaker driven by a MAX98357A amplifier. Like the Neuro Vision OV5640 it carries the strobe LED and a VL53L1CB time of flight sensor. It is the only carrier family with a display, and it allows a sketch to show the camera image and model results with no computer attached. The Neuro Vision TFT-W is the same carrier with a u-blox MAYA-W476 WiFi and Bluetooth LE module added.

#Specifications

The inertial unit, magnetometer and microphone are on the Neuro N6 board itself.

#Fitting

The carrier mates with the two board-to-board connectors on the Neuro N6 with the board unpowered. The display faces away from the Neuro N6.

#In a sketch

Both variants are declared with the carrier argument:

#include <OV5640_Arduino.h>

OV5640 camera(CARRIER_TFT);

The argument records the inverted CSI lane wiring and enables the display. Declaring a plain OV5640 camera; on this carrier produces no frames.

The ObjectSegmentationDisplay example, under File > Examples > NeuroN6Examples > 03.NeuralNetwork, runs segmentation and draws the result on the panel. cfg.transport = TRANSPORT_LCD selects the panel as the output. See The On-board Display.

#Display

The camera image is written to the panel continuously by hardware and is double buffered, so it does not tear. Post-processors draw boxes, masks and skeletons on the overlay layer above it, and a sketch can draw its own graphics there with the ohmlab_lcd_draw primitives. The panel shows WVGA (800x480) at full size and VGA centred with bars; larger camera modes are for USB streaming and switch the panel off.

The panel can also mirror the image while video streams to a host, with cfg.lcd = true.

#Touch

The GT911 library reads up to five touch points and provides pressed() and clicked() rectangle tests, so an on-screen button is a drawn rectangle and a test against the same rectangle. The default coordinate mapping is correct on this carrier. See Touch Input.

#Speaker

The Speaker library plays tones and streams 16-bit mono PCM through the amplifier. See Speaker.

#Wireless (TFT-W)

The MAYA-W476 provides WiFi video streaming and Bluetooth LE. The WiFiAccessPoint example runs an access point, a BLE peripheral, the camera, the panel and the speaker together. See WiFi.

#Examples for this carrier

#Related pages

Downloads and Regulatory Compliance.