LimiFrog, electronic module for inventing and prototyping, Grenoble, France

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Founder - Xavier Cauchy

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LimiFrog Teaser #1

A teaser based on footage shot for our upcoming kickstarter video: project "LimiFrog".
In this sequence the focus is mostly on a simple demo of a robot application.
A first, hand-held LimiFrog module detects when it is significantly tilted. It does so through its embedded accelerometer, which measures the X,Y,Z components of gravity -- a change of module orientation changes these components.
The first module sends this data over BlueTooth Low-Energy to a second LimiFrog module which sits in the robot. This second module interprets the received data and drives the two DC motors that move the robot accordingly. This is achieved by generating adequate PWM and other control signals on the extension pins of LimiFrog, which connect in the robot to a Pololu MC33926 dual motor driver.

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LimiFrog - Hand-tracking Robot

This is an illustration of using the proximity/distance detector chip and the accelerometer chip embedded in LimiFrog to pilot a small robot.
According to the information that it gathers from these chips, the software running on the STM32 generates adequate control signal that are output on LimiFrog's extension pins. In the robot, these pins connect to a motor driver board (Pololu MC33926 dual) that provides DC current to the motors.