i'm kinda new to electronics. i would just like to ask if the circuit below can measure the distance between the ultrasonic module and the obstacle? and how can i do it? this is for my project.
It's a simple sonar - you measure the time it takes for the reflection from the object. You can then calculate the distance based on how fast sound travels.
It's a simple sonar - you measure the time it takes for the reflection from the object. You can then calculate the distance based on how fast sound travels.
okay. do you know anything about the "handy board digital port" in the diagram? the one on the extreme right of the receiver circuit. is it necessary to be connected to the collector of the transistor? i'm really sorry i'm really a noob when it comes to electronics.
okay. do you know anything about the "handy board digital port" in the diagram? the one on the extreme right of the receiver circuit. is it necessary to be connected to the collector of the transistor? i'm really sorry i'm really a noob when it comes to electronics.
okay. so i can connect it to a microcontroller right? oh yeah, one more thing. do you know of a circuit that interfaces pic16f877 with an rs232? because i'm also gonna use it for the project. i'm gonna use pic16f877 with the ulrasonic module and interface it to a pc using an rs232 cable. i have researched some circuits of rs232, the one with a max232, but i don't really know if that is what i need. can you help me?
okay. so i can connect it to a microcontroller right? oh yeah, one more thing. do you know of a circuit that interfaces pic16f877 with an rs232? because i'm also gonna use it for the project. i'm gonna used pic16f877 with the ulrasonic module and interface it to a pc using an rs232 cable. i have research some circuits of rs232, the one with a max232, but i don't really know if that is what i need. can you help me?
thanks again man. seems like i'll never run out of questions. what if there are two or more obstacles within the ultrasonic beamwidth? can it detect the all of it? or only the nearest one?
thanks again man. seems like i'll never run out of questions. what if there are two or more obstacles within the ultrasonic beamwidth? can it detect the all of it? or only the nearest one?
i tried to test the circuit in the link below but it didn't work. i rewired it a couple of times and still it didn't work. is there something wrong with the circuit? or is it the ultrasonic module that i'm using? i think its made from china.
That circuit is a simplified sonar. The output from it is logic high if an object is in front of it. It is only really useful for a robot that can use such limited information such as a maze solver. It cannot be used to measure distance.
That circuit is a simplified sonar. The output from it is logic high if an object is in front of it. It is only really useful for a robot that can use such limited information such as a maze solver. It cannot be used to measure distance.
the output was a logic high when we used logic probes to the collector of the transistor. but how come the led didn't light up? do you know of an ultrasonic circuit that can measure distances?
thanks man.. can you say that there is something wrong with the ultrasonic module that i'm using? because the circuit in my link didn't work when i tested it.