SharpShot Vision legacy editions (no longer supported)

Each host guide covers both the School and the WRO edition; examples and value tables are separate for the two editions.

Host	Host guide (by software)	School edition	WRO edition (HUE12)
SPIKE	SPIKE: LEGO official app · MBC Blocks website · Pybricks	SPIKE beginner examples	SPIKE beginner examples
EV3	EV3: EV3-G · EV3 Classroom · Pybricks · clev3r	EV3 beginner examples	EV3 beginner examples
Arduino	Arduino: Arduino IDE	I2C value table · Arduino examples	I2C value table
mBlock	mBlock: mBlock 5	Block table · mBlock examples	Block table
MATRIX	MATRIX: mVision blocks	MATRIX value table	MATRIX value table
micro:bit	micro:bit: MakeCode	MakeCode block table · micro:bit examples	MakeCode block table

Value reference (how each value is read on each host): School edition · WRO edition (HUE12)

No hub needed: click through them in your browser.

Host	School edition	WRO edition (HUE12)
SPIKE	MicroPython (Pybricks) · Pybricks blocks · MBC Blocks website · LEGO SPIKE App	MicroPython (Pybricks) · Pybricks blocks · MBC Blocks website · LEGO SPIKE App
EV3	Pybricks / EV3 MicroPython · clev3r · EV3 Classroom · EV3-G	Pybricks / EV3 MicroPython · clev3r · EV3 Classroom · EV3-G
Arduino	Arduino IDE	Arduino IDE
mBlock	mBlock 5	mBlock 5
MATRIX	MATRIXblock	MATRIXblock
micro:bit	MakeCode	MakeCode

File	Contents
esp32cam_arduino_examples_en.zip · Chinese comments	Arduino examples (I2C, School + WRO editions)
MBC_cam_school.py · MBC_hue12.py	Pybricks libraries (one file each for the School and WRO editions)
MBC_cam_school_Lib.py · MBC_hue12_Lib.py	Old-name libraries (drop-in replacement for old projects)
MBC_sensors.py	MBC unified library (shared by all MBC sensors)
Download center	mBlock 5 extension (its "Vision" category holds the legacy blocks)

Beginner example files for the SPIKE official app, the MBC Blocks website and the EV3 software are not zipped; download them one by one on the beginner example pages above.

Product Overview

The official LEGO color sensor only sees a single spot directly underneath it. It cannot track a moving color blob or tell where a target is in the scene.

The SharpShot ESP32CAM gives your robot real eyes: it finds the position and size of a chosen color blob in real time, reads the color at any point of the image, and detects motion. Everything is set up on the color screen and buttons on the back of the sensor while you watch the live image; settings are stored on the device and ready at the next power-on.

Core Advantages

• 🖥️ Live preview on the device: a 1.8" color screen on the back shows the camera image and detection results
• Button menu setup: pick point position, HSV tolerances and minimum blob area on the sensor itself — no computer needed
• 💾 Settings survive power-off: color setups and camera settings (brightness, contrast, saturation, exposure, white balance, flip, mirror) are stored on the device
• Five outputs at once: point color, blob area, blob X / Y, motion value
• Built-in flash light: stable color detection in dim venues
• 🔭 Optional lenses: narrow (see far) or wide (see more) to suit your field

Specifications

Item	Spec
Image resolution	160 × 120 (output coordinates are scaled down: SPIKE edition X 0 ~ 98, Y 1 ~ 75; see "Output Data" below)
Screen	1.8" 128 × 160 color TFT
Buttons	Left, right, enter, side (short press: open/close menu; long press 1 s in the menu: clear that color slot)
Lens options (field of view)	65° / 110° / 120° / 160°
Flash light	Built-in, switched in the on-device menu (setting is saved)

Output Data

Values below are for the SPIKE edition with the current firmware (EV3 edition: see the next section).

Output	Content (SPIKE edition)
Point color	Hue at the chosen point: 0 ~ 100 (red 0/100, yellow ≈17, green ≈33, blue ≈67), -1 = black/white/gray; 0 ~ 10 in the Robot Inventor official app. Reads 0 (same as red) if the color point has not been set
Blob area	0 ~ 100 (0 = not found; X / Y are then invalid); only readable in the official app — Pybricks mode 9 has no area
Blob X	0 ~ 98, left → right, center ≈ 50; 0 when not found
Blob Y	1 ~ 75, bottom → top (small at the bottom, large at the top), center ≈ 37; 0 when not found
Motion value	0 ~ 100, higher = more change in the image

Official SPIKE App (Education) blocks: "color" = hue, "reflected light" = motion value, "raw red / green / blue" = blob X / Y / area.

Values read on EV3

The EV3 edition ships with one of two firmwares:

Firmware	Shows on EV3 as	Values
School / creative edition (color pick + blob tracking + motion)	Infrared Sensor	Mode 0: Hue (0 ~ 100; red 0/100, yellow ≈17, green ≈33, blue ≈67; -1 = black/white/gray). Mode 1 (8 values): Hue, saturation, brightness, motion, blob X (0 ~ 100, left→right), Y (0 ~ 75, bottom→top), width, height; X/Y/width/height are all 0 when nothing is found, so test "width = 0"
WRO 2026 edition (HUE12, 12 color points)	Third-party sensor (type 95)	Hue code of each of the 12 points (0 ~ 239 color, 240 ~ 245 white, 246 ~ 250 black, 255 = point not enabled) plus saturation. Works with EV3-G (MBC custom block), clev3r and Pybricks; EV3 Classroom cannot read it

EV3 beginner examples: school / creative edition · WRO 2026 edition.

Hardware Wiring

1. Plug the sensor into SPIKE (Port AF) or EV3 (Port 14)
2. The sensor starts only after it is connected to a controller that is already powered on (the screen shows "LEGO Sync..." first); once the camera image appears it is ready
3. Short-press the side button to open the setup menu; use left / right to choose and enter to confirm. Color setups and camera settings are saved automatically

General Tips

• Set the color where you will compete: hue tolerances depend on the venue lighting. Point the camera at the target on the actual field, open the menu and pick the color there; turn on the flash light if the venue is dim.
• Minimum blob area filters noise: if small patches of a similar color trigger false detections, raise the minimum blob area in the menu.
• Check "found" before using X / Y: when no blob is found, X / Y / width / height all read 0. Test area (SPIKE) or width (EV3) first, then use the coordinates.
• Clear a color slot: in the menu, hold the side button for 1 s on that slot.

FAQ

• The screen stays on "LEGO Sync..."? → The sensor only starts after the hub is powered on. Power the hub first, then plug the sensor in, or re-plug the cable; try another port if it still does not sync.
• The blob jumps around or is lost? → Lighting changed since you set the color. Re-pick the color on the field, widen the HSV tolerance a little, or turn on the flash light.
• Hue reads 0 but the target is not red? → The color point has not been set yet (reads 0, same as red) or the point is on a black / white / gray area (-1). Set the pick point in the menu.
• Which firmware is on my EV3 edition? → Plug it into an EV3: the school edition shows as an Infrared Sensor, the WRO 2026 edition as a third-party sensor (type 95).