Recent content by akueddy

hi guys, Im having trouble trying to understand calculations of binary numbers. In pic16f84 i assume that a variable can have a value of 0 to 256. If i wanted to have a value larger than 256 i need to add another variable and count the number of overflow. for example when counta overflow then...

Hi, I tried to assign inputs to a particular output and I've got some funny results. In this code ive change the value of rpm to into the address of arrays that I've set. The address correspond to the delay time for spark to occur. Heres my c code : #include <stdio.h> void...

1) Inquisitus Id prefer this one cause my actual array size is going to be about 100 and the values are not predictable although it is increasing. int array[] = { 13, 21, 35, 41, 51, 63, 74, 81, 99......1000 }; 2) shwx The program that i want to write is for an ignition system where...

Hi guys, ***I just started c programming, I've done some reading last week and i came up with a basic program.Ive got a problem trying to assign an input as an address to a specified value.Basically i have 3 datas in my array and it will be called by inputting a number which points to the...

Hi guys, Im doing a group project on a conversion of a small motorcycle engine(suzuki dr125s) so that it can run on ethanol(have not decide on what proportion, maybe going to run it at 85% or more). The modifications and the reasons behind it : 1) Cleaning/changing the fuel...

Hi, i really hope someone can help me with this... what type of battery that is suitable for an electric vehicle(slow walking speed,electric wheel barow)? is it a deep cycle marine? I have a problem on how to choose the correct battery. i have choose a motor which can produce a max...

Hi guys, I am trying to do an analysis of an electric carjack, i know the load, i know the torque require at the end of the jack(ive calculated it to be 5Nm). i know the typical electric car jack uses 12V 10A pmdc motor (about 3500rpm no load speed and stall torque 0.4Nm). I know that to...

I hope someone could verify/help/alter/add on my design calculation of an electric vehicle (in my case is a powered wheel barrow,3wheel, 2front wheel,1 back wheel castor, dc electric motor powered 2 front wheel). The specifications are: Speed : 2m/s maximum Weight : 150 max kg Gearbox...

''Li-Ion is the only really practical cells for proper EV stuff but you need to be really careful when using them. If you over current them they will become damaged really easily. The same goes for Nickle Metal Hydrids.'' I am interested in how to supply the power for typical dc permanant...

Thank you so much for the information! it really helps!

The thing is, regarding my design project(motor powered screw jack). I was wondering how the motor would behave. I have someone told me that if I am using a constant torque motor and the load is low, then the motor would draw less current than at its maximum capability. The constant speed type...

Hi everyone, I know that for a typical dc permanant magnet motor, there is a quadratic relationship between the power and torque,the same goes for power and speed. The max power occur at 1/2 the stall torque,this is also true at 1/2 the no load speed. Can someone please tell me what...

ops sorry, it is suppose to be a scissors jack.

hi, i am designing an electrical car jack, my question is before i choose the proper electric motor, how do i calculate the torque require to lift the load, let say 100kg.