Visualize: a signal test bench inside Minecraft

The Laptop's Visualize tab in 0.4.6-beta lets you inspect channels over time, compare incoming sensor samples and send test waveforms to supported hardware.

It is not a high-frequency electronic oscilloscope. It records application-level protocol messages, so the view is useful for understanding channel values, debugging sensor mappings and checking telemetry.

The three views

• Timeline: compare the history of multiple channels.
• Sensor: inspect raw values and their relation to redstone levels.
• Generator: send a ramp, triangle, square, sine or step test pattern to a channel.

RX, TX and proof of delivery

An RX sample may be recorded before client-to-server throttling. Seeing it on a plot does not prove the corresponding I/O Module received it.

A TX point represents a write to the transport, not physical acknowledgement from the board. For an LED, verify the physical output separately.

Practical exercise

1. Load the Uno R3 potentiometer example.
2. Connect the board, configure the channel pot_val and open Visualize.
3. Turn the potentiometer and compare values on the 0–255 cable scale with redstone's 0–15 steps.
4. Optionally activate a telemetry channel such as mc_hunger and compare traces.

The plot should not be interpreted as direct knowledge of what happened between actual received samples.

Generate with care

Use a unique test channel. Never run a generator and a separate I/O Module against the same physical actuator channel at once.

Stopping a waveform attempts to send a safe resting value, but a sudden unplug or crash prevents any guarantee that the command arrived. Implement a device-side timeout/watchdog when keeping an output active would be unsafe.

Read the protocol guide and troubleshooting advice for transport constraints.