HandRadar
A wearable Arduino prototype that turns obstacle distance into vibration feedback, with light and sound indicators in the original demonstration.
Source-backed walkthrough · not an application demo
Explore the project.
Editorial visualization of the documented project flow. This is not a source screenshot or a running application.
01Measure distance+
An ultrasonic sensor measures the distance to an obstacle.
02Map to feedback+
The Arduino translates nearer obstacles into stronger and more frequent feedback.
03Feel or observe+
A vibration motor, light, and buzzer demonstrate the response. No physical sensor is connected here.
An explanatory walkthrough of the documented project—not a recreation of its original user interface. See the source for implementation details.
Distance you can feel
HandRadar is a palm-mounted prototype built during the first Travel to the Cloud hackathon in Gdańsk. It combines an Arduino Uno, an ultrasonic distance sensor, and a vibration motor.
As an obstacle gets closer, the feedback becomes more intense and frequent. The prototype also uses a blinking light and a buzzer to make the signal easier to demonstrate.
An assistive-technology experiment
The README discusses the potential to complement a white cane and suggests smaller distance-sensing hardware for a future version. Those are project intentions, not evidence of a validated mobility or safety device.
Presenting hardware honestly
The walkthrough shows the documented sensing-to-feedback chain. It does not read a real sensor or reproduce the physical feel of the motor. Original hardware photographs and a recorded demonstration remain the strongest evidence for a project like this; a browser simulation must always be labelled as such.