Recently, Jaime Andres Arteaga designed a simple C program to use a SRF05 ultrasonic sensor, low cost ultrasonic rangefinder up to 5 meters, with AVR ATmega32. The microcontroller sends a pulse trigger (10 us minimum) and then, the sensor produces a pulse that is proportional to the distance.
This imaging sonar project uses two PIC microcontrollers, PIC16F84 for the servo control and PIC16C71 for the sonar portion. It’s equipped with two 40 KHz ultrasonic transducers, one for transmit, one for receive. These transducers are steered by an R/C servo over 180 degrees of azimuth.
If you want to build an ultrasonic range finders project but you don’t want spend much money to buy commercial sensors like Parallax’s PING sensor then Kerry D. Wong’s project may help you to build sensitive ultrasonic range sensor using inexpensive ultrasonic transducer. It takes cost less than 5 dollars (excluding the MCU).
The SNAKY project goal is to build a robot moving around using the same crawling principle of a snake. This ‘fun robot’ is made with a set of thirteen articulated sections and the angle between each pairs of sections is driven by a servo motor (so twelve motors), simulating the muscles of the snake. Each [...]
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