program

[snuti]

i need a program to interface the ultrasonic sensor with 8051 microcontroller whose output is given by led for the distance range of 2-3cm,buzzer for the range of 1.5-2cm and the plugger whish is work as a switch for the range below 1.5cm.plz provide me the steps and the programming for my project.

[SHAH DISHANT H.]

Hi,

 

Regarding your application , divide the program in steps.

 

1. Make a program to interface ADC0804 & LCD

 

2. Give output of ultrasonic distance to analog input of ADC0804 and displayed digital value on LCD

 

3. Note down digital values for ur required benchmarks like 3 cm= Value A, 5 cm= Value B etc.

 

4. In program compare the obtaine ddigital value and drive ur devices accordingly

 

All the best.

 

For any queries further, write us back here

[Jaymin D]

Hello,

 

First of it depend on the sensor which type you used..

 

mean there are two types one without analog output and one with inlcude

 

and most imp thing is that ultrasonice is work on timing sequence mean timing frame and delay is very much imp in sensor to activate it, start to take data conversation and get output all for these dealy must be imp.

 

so please can you tell me which type of sensor you used ??

then I get some idea and we can move forward..

 

1.HC-SR04 (point 3 is imp for us)

 

1. Working Voltage : 5V(DC)
2. Static current: Less than 2mA.
3. Output signal: Electric frequency signal, high level 5V, low level 0V.
4. Sensor angle: Not more than 15 degrees.
5. Detection distance: 2cm-450cm.
6. High precision: Up to 0.3cm
7. Input trigger signal: 10us TTL impulse
8. Echo signal : output TTL PWL signal

 

I write below its working if you have this kind of sensor then,

 

1.Adopt IO trigger through supplying at least 10us sequence of high level signal.
2.The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal.
3.If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving. Test distance = (high level time * sound velocity (340M/S) / 2.

 

2.HC-SR05 (generally not use)

 

    1) Voltage : DC5V
    2) Static current : less than 2mA
    3) level output: high-5V
    4) level output: the end of 0V
    5) Sensor angle: not more than 15 degrees
    6) Detection distance: 2cm-450cm
    7) High precision: up to 0.3cm

 

so please provide me some detail that I can help you.

 

Also you buy any components at very low cost from me..I made project only for students at very very low cost..

 

HC-SR04 – 340 Rs

HC-SR05 – 400 Rs

 

If any kind of h/w or s/w related problem of 8051 u can ask me..

 

email : project[dot]student123[at]gmail[dot]com

 

just google about “DABHI ELECTRONICS”

and go to electronicsproject website..

 

best luck

 

Regards

 

Jaymin D

-dabhi electronics

 

 

[Ashutosh Bhatt]

Use ultrasonic sensor with serial output. That gives distance output in cm.

[Jaymin D]

Hello,

 

Ya its ok but we can get o/p in cm, mm, and inch by change the timer and delay setting.

 

So its not a perticuler type that this is for cm and this is for mm

 

We get o/p in form of cm, mm from any type of ultrasonics sensors…

 

Thanks

 

Regards

 

Jaymin D

[snuti]

can plz forward me program.

[Jaymin D]

Hello,

 

but first you should define the H/W because code is always made according to H/W.

 

which pin you connect sensor ??

Which type of M/C you used ??

all these tings matter so , please request to you that define some basic block diagram and then consider it.

 

Hope you get my point.

 

email : project [dot] student123 [at] gmail [dot] com

 

Best luck

 

Jaymin D

[Author]

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