### Electronics Speedometer

If you're calculating RPM from wheel then the RPM to Linear Velocity formula is:
v = r × RPM × 0.10472
Where:
v: Linear velocity, in m/s
r: Radius, in m
RPM: Angular velocity, in RPM (Rounds per Minute)

If in case you're dealing with engine RPM then:

vehicle speed in miles/hour = (0.00595) * (RPM * r) / (R1 * R2)

where:
RPM = engine speed, in revolutions/minute
r = loaded tire ra... Read Compelte post
Other Tags:
Posted by ajay_bhargav on Thu Sep 20 2012, 06:37 PM

#### Conversation

Sat Oct 12 2019, 10:23 PM
Log in.. then post your code in the 8051 forum
Sat Oct 12 2019, 10:18 AM
i am doing a countdown timer with 8051 for my project, unfortunately our professor had to take a leave of absence before he could teach us most of it.. can someone explain the .asm code of it for me?
Mon Sep 23 2019, 07:37 AM
Nathaniel
I am doing a project for my schools wireless security system with cameras,sensors and spot lights using 8051 micro controller, could you help me out with the design and its source code.
Wed Sep 18 2019, 08:48 PM
Caryn Kover
Thank you for your time,
Mon Aug 05 2019, 07:09 PM
@Ismail ..post in forum, give details
Mon Aug 05 2019, 04:33 PM
Ismail balghmi
Wed Jul 24 2019, 12:47 AM
@BUSTER123 Please post in the forum
Tue Jul 23 2019, 06:13 PM
BUSTER123
hello! newbie here. i am kind of a guy who hates using ready - made existing libraries, so this helped a lot as i was trying to control and write to a character lcd display. however, i can't figure out how to set the cursor position. for example, i want to set it to the 5th column in the first row, so position 5. so according to the table, i am sending 10000101 on the 8 data lines of the lcd (register select pulled low). the cursor does not move there however. and i cant move the cursor left or right too. is it something wrong that i am doing? thank you.
Thu Jul 11 2019, 07:55 PM
@ramos https://www.theengineeringprojects.com/2017/09/l298-motor-driver-library-proteus.html
Thu Jul 11 2019, 07:44 PM
@praveen123. Can you give a link to the project ?

### Recent

ilylily07
Tue Oct 15 2019, 04:32 PM
hientran123
Tue Oct 15 2019, 02:27 AM
Sat Oct 05 2019, 02:38 PM
zexalo
Thu Oct 03 2019, 09:53 AM
thanhle12345
Thu Oct 03 2019, 07:37 AM
ramon_vsc
Fri Sep 20 2019, 04:53 PM
youssoufba
Thu Sep 19 2019, 11:57 AM
Taiphan000
Tue Sep 17 2019, 04:21 AM

#### Online

Guests: 19, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 38097

#### Trending Topics

Forum Activity
##### Posted By ExperimenterUK
Tue Oct 22 2019, 05:18 AM
Thanks for support,[email protected]
##### Posted By wimac
Mon Oct 21 2019, 09:18 AM
I’ve been following this thread and looking at the...
##### Posted By [email protected]
Sun Oct 20 2019, 03:09 PM
Thanks for support,
##### Posted By [email protected]
Sun Oct 20 2019, 03:02 PM
sir, when i on display ,sometime 3rd display is no...
##### Posted By [email protected]
Sun Oct 20 2019, 02:53 PM
sir, when i on display ,sometime 3rd display is no...
##### Posted By ExperimenterUK
Sun Oct 20 2019, 12:21 AM
Your code seems okay on my simulationTry my code o...
##### Posted By [email protected]
Sat Oct 19 2019, 07:13 PM
please find video attachment. 3rd & 4th displa...
##### Posted By [email protected]
Sat Oct 19 2019, 07:05 PM
sir, 3rd and 4th dot matrix display flickering, ...
##### Posted By ExperimenterUK
Fri Oct 18 2019, 09:18 PM
Hopefully you understand some of the program.Which...
##### Posted By [email protected]
Thu Oct 17 2019, 09:38 PM