Designed and built in just 18 days at the University of Engineering and Technology Lahore in Pakistan,  7 x 3.5 x 4.5 ft (2.13 x 1.06 x 1.37 meter), 132 pound (60 kg) low-rider features a custom built, t-shaped aluminum framework at the front of the vehicle, and the back part of an old bicycle frame at the rear, joined just behind the seating area to shock absorbers. The reverse three-wheeler - with two wheels at the front and one at the rear - also has a 40 watt photovoltaic canopy above the rider that charges the onboard 12v/80Ah dry cell solar battery.

An eco-friendly vehicle that uses solar energy as its source of input. A solar panel is used to charge the battery and the battery drives the dc motor.
Its a vehicle that uses reverse trike configuration, i-e two front wheels and a single wheel on the rear side. Steering is done with the help of front wheels. It also consists of a solar panel, Battery and a dc motor.


Solar Panel
Steering Mechanism
Chain and sprocket mechanism
Charging circuit


Length: 7ft
Width: 3.5ft
Height: 4.5ft
Weight: aprox~ 60kg
Motor: 24Volts DC, 17Amp
Battery: 12Volts, 80AH
Materials: Aluminum, Steel and Cast Iron

Material Quantity Cost (Rupees)
Aluminum Sections
(2’’ x 1’’) 12ft length
2 ...................................................2500
Aluminum Plates 2 .......................500
Steering Parts (hinges) 2 ...........150
Solar Panel 1 .............................12000
DC Motor 1 .................................7500
Battery 1 .....................................8000
Tire set 3 ....................................2400
Brake set 1 ................................100
Iron Plates 7’’ x 4’’ 2 .................300
Iron Plate 3’’ x 3’’ 2 ......................150
U shaped Iron Sections 4 ..........500
Aluminum Sections for Solar Panel length 6.5ft 2 .............600
Sprockets 2 .....................500
Handle 1 ..................100
Seat 1 .......................550
Cycle Chain 1 ..........................400
Chassis Rear Section 1 .....................1000
Nuts bolts washers and miscellaneous - ............2120
Labor Cost - ....................................7300
TOTAL COST - 46670/- Rupees (APPROX ~550 USD)

Please vote for my Instructable (you can see the image for "VOTE NOW!" on the top left of this page)
defrancis19562 months ago
How much weight can this move?

Hi !

I´m very interested on aqcquiring the instruction plans of this vehicle and would thank very much who inform me about it.

Thanks !


jrlavina7 months ago

great job. :) will you send the charge controller circuit diagram and all the details in jrlavina27@yahoo.com thank you very much :)

amanga jeki10 months ago

hie great stuff,am doing almost similar project........can you send me charge controller circuit design at knkonjela@yahoo.com

rashaism12 months ago

thank you for this wonderfull project

djmelvinv1 year ago
hi nice project. I was wondering about the acceleration. isnit just on of or and accelkeration control?
RAVIRAJ2431 year ago

will you send mi 5 watt 6volt solar charger controlar on my mail id?

my mail id is-future.energy2014@gmail.com/futureacc2014@gmail.com

RAVIRAJ2431 year ago

will you send mi 5 watt 6volt solar charger controlar on my mail id?

my mail id is-future.energy2014@gmail.com/futureacc2014@gmail.com

Hi! Nice job. Can you please also send me the charge controller circuit diagram. I want to do something similar with a li-ion battery for an electric car project.

there is my e-mail: ulrichmabou@gmail.com


lhillyard4 years ago
Wow very impressive. i work at a machine shop and i want to build something like this. I didnt see any details on your controller though. care to enlighten me?
The Mak3rs (author)  lhillyard4 years ago
thanks you so much .... well i just bought it from the local electronic store... its called "Charge Regulator or controller" also called "Cut-off circuit" well it consists of a relay and resistors and IC (dont know the specs) but its purpose is to cutt-off the supply from the Solar panel when batteries are fully charged in my case utt-off voltage was 13.9 Volts

What is amperage of the relay in the Charge Regulator.

IC may be 8 PIN DIP 555 Timer IC.
naveen raj1 year ago

hi., i want to full details of motor for this projectt., our mail id is arunaveen14@gmail.com,

The Mak3rs (author)  vanadium chrome4 years ago
ok firstly i would like to ask you where are you from?... secondly its 30kmph not mph.... and lastly no it does not have a speed-o-meter, yet we can measure its speed!... HOW?.... well we had motor bikes which traveled along with the vehicle .... and they had speedometer!... hope you understand the rest .... cheers

please give the correct info because it is not possible to run a 24 volt DC motor with a 12 volt battery

You tell him ! God, some people....
raza8961 year ago

AOA. Great effort farrukh. Im also from UET but in Computer Science department. Nice to see your work on this website.. Going to rate your work. But please answer that how a 12 volt battery controll a 24 v motor???

vivek271 year ago
will you please send the circuit diagram of 40 watt solar panel charge controller?? my mail id vickydoner90@yahoo.in
farrukh i wanna ask a question which is......if the batrry charg is going down so it affect the speed of the trike or not.....means that if charge is low will it speed be slow and vice versa plz guide me......
dbonaire4 years ago
Excellent work farrukh!! Very good work here!!
The Mak3rs (author)  dbonaire4 years ago
thanks you so much dbonaire :)
Hi! A0a. Farukh i tried the number that you gave. its off. can i contact u in any way. my number is 0333-6670140. i need to talk to you about this project. My name is Aamir
hi farrukh nic projct plz let m inform which components is used in this??
wasimsohail2 years ago
Nice Work farrukh, Pakistan needs Man like you. With 40 Watt Solar panel, 80Ah battery achieving 30mph and covering 70km seems awesome. Keep it up.
I want to be your fan, what's your fb ID.
viasths2 years ago
Why don't you buy a donkey instead????
devratana2 years ago
great job dude.......
but i want to ask some questions :-
1. It is possible to run a 24v dc motor with a 12v battery?
2. How much torque is produced by ur motor and at what rpm?
3. weight of your vehicle?
grambo53012 years ago
Does anybody have any ideas for the motor?
gavindusl2 years ago
Hi. where i can find this charger controller circuit ?
gavindusl2 years ago
Dear friend where i can locate the circuit diagram or where i can but the PCB ??
Hi Farrukh,

1. If we want to use the same technology and use it as rickshaw / cart to carry construction material, or vegetables, or waste material, how much weight it can carry with present battery.

2. Suppose if we want to carry material of 250-300kg as solar powered rickshaw.

3. Incase during winter or rainy days, when no solar energy, can we charge the battery through electricity (as as back-up charge). Some solar water heaters come up with both option, solar charge & water can be heated through electric connection also.

ritik232 years ago
ossum project..
excellent...kep it up..:)
hey can you please send me solar panel specifications
to my email ritik.saluja@ymail.com
ritik232 years ago
hey can you plz tell the solar panel specs
to my email ritik.saluja@ymail.com
peluso3 years ago
Excellent project, very simple and relatively easy to build, I congratulate you, the world needs people like you.
Very cool! Congrats! I am looking to make a trike that uses a scooter motor. Keep up the good work. Steve
lokhande3 years ago
Very Good Farukh, i like your idea Good Luck.
Jbeaubrun3 years ago
Why did you use a 12V battery for a 24V motor?
akumar624 years ago
Hi farrukh,
It was a pleasure to know about the project. Actually i was working on the same lines for some months. Now can you please tell me in detail how did you decide the pv pannel specifications n the battery. please mail the calculations to my email id
The Mak3rs (author)  akumar624 years ago
thank you so much for the interest Ashish... but i have already provided enough information ... by which anyone can make there own vehicle like this... i can't give you more details and calculations as they are confidential...! Hope you understand.... thanks anyways
Hi farrukh,
It was a pleasure to know about the project. Actually i was working on the same lines for some months. Now can you please tell me in detail how did you decide the pv pannel specifications n the battery. please mail the calculations to my email id
firepup1043 years ago
Great job, but how do you stop it
j.h.patel053 years ago
i did not found any content or discription about motor so please will you tell me its detail.
dorybob3 years ago
Cool build and congratulations on winning the Green Challenge.
The Mak3rs (author)  dorybob3 years ago
thank you so much dorybob! I'm still surprised!
j.h.patel053 years ago
hi. i want to know that by once fully charged batery how much km it can run. and please tell me whole full discription of motor. motor'shp ,voltage , ampere, type of motor. and you made awesome vehicle.
The Mak3rs (author)  j.h.patel053 years ago
hi, thank yo so much ...
the info you need is written in Step 10.
However, it can go upto 70 km in single charge
motor is 24V DC, 17amps, makes it half HP
RogerBays4 years ago
Hi. Great to see such a practical vehicle. What are all the battery and motor details?
The Mak3rs (author)  RogerBays4 years ago
thank you so much!... well i have mention the details in the above steps however.. batter is 12V 80AH and the motor is 24V 17amps DC
tsulehri4 years ago
what is the size of solar plates and how much electricity generates.
The Mak3rs (author)  tsulehri4 years ago
well the size of the panel is 49" x 25" ... and by "How much" if you mean how many watts it generates then ... the panel generates ~40watt electricity
aapurim4 years ago
. . . Performance might be improved by aerodynamic streamlining (a fairing to make the vehicle teardrop-shaped, with a frontal vent to keep the passenger cool) and by having a central pivot mounting for the solar panel, with a rod or string to adjust its tilt towards the sun whichever side it's on. 
. . . For better solar-power conversion, see developments in NanoSolar technology from CalTech University ...

iffee4 years ago
well done Farrukh sahib.

1. I am interested in Solar Panel specifications and also exact source from where it can be purchased..

2. Charge controller seems from Electronik 2000 Hall Road Lahore.
What is its kit #

3. Is there any provision to get vehicle driven with pedal power in emergency?

The Mak3rs (author)  iffee4 years ago
thankyou so much!..

1. well the panel i used was given to me by my university however it was a 48V DC 40Watt PV, Amorphous silicion panel.

2. yea its from electrinic 2000, but i dont remember its kit # but you can take from them by calling it "12V Cut-off cuicuit"

3. Not at the moment but by doing some mechanical changes it can be driven using pedals!
P.S. Cant talk in udru warna urdu main hi likhta! =D
gmitchell64 years ago
Dude, seriously that rocks! How much more effort to make it faster?
The Mak3rs (author)  gmitchell64 years ago
thanks ... well not much... all i have to do is to use a speed controller and a Gearing mechanism (which i was gonna use but unfortunately wasn't able to do coz of short time period)
kheath24 years ago
SO you have a 12V battery. Assuming the battery is fully charged when you set off, how much is the range improved by adding the solar panel?

How long would the solar panel take to charge the battery fully?
amorarun4 years ago
Nice work n you got my vote :)
The Mak3rs (author)  amorarun4 years ago
Thanks you so much =)
sillywilly4 years ago
Farrukh Khan,
Very good 1st try especially considering the short time period you had to complete. Are you going to continue improving this vehicle or perhaps sell and start a second one? If so, I would suggest at least a single A-arm (if not double) suspension up front with coil-over shocks, perhaps small airbag suspension, or my favorite design, swing axles. One of the best written and executed articles I have run across in quite a while. It's in 16 parts covering all aspects of building a custom human-powered trike and testing for best full suspension. So I'll give you the link to the first article and you can go from there... autospeed dot com/cms/A_108591/article.html A person will need to condense the link, removing spaces and replacing the word "dot" with a period. Instructables apparently didn't like me putting a link in here. :-/

PS, I gave you top rating also :-)
The Mak3rs (author)  sillywilly4 years ago
thanks you so much silly willy... actually it was a project for my university so its no with me any more!... i'm considerig the isea of making a new one!...and for sure i will use A-arm suspension... coz actually its my favourite!... thanks for the comment really appreciate!
herreran4 years ago
Farrukh, consider also a regenerative braking when considering a speed controller. Good luck and success!!!
The Mak3rs (author)  herreran4 years ago
yea sure i will.... in my next project hopefully... :)
herreran4 years ago
Hi Farrukh,

Nice job!!! I was wondering, what did you use as a speed control? and what about stopping?


The Mak3rs (author)  herreran4 years ago
hi norberto,

Firstly Thank you very much secondly i used gear mechanism to change the speed of the vehicle...i was gonna use the circuit but due to shortage of the submission time i had o go with the gears ... and i used brakes to stop the vehicle.

flyingpuppy4 years ago
Jaw-droppingly good! The government needs to hire you to solve the petroleum problem.
The Mak3rs (author)  flyingpuppy4 years ago
thank you so much!... and yes indeed!... In my opinion solar is the best alternative!
fridodido4 years ago
you could do this project even in a budget of 20-25k too
The Mak3rs (author)  fridodido4 years ago
yea!.... if you remove the solar panel!.... otherwise this is the least that i was able to manage!
jobard4 years ago
Where did you get this solar panel?
The Mak3rs (author)  jobard4 years ago
from my university!.... but its worth is same as i mentioned!
ccorvair4 years ago
super cool you got my volt 5 and I will ad you to my face book.and for your next trick here is what i have been hoping to see ,something incredible using piezo technology . oh if I only had a brain.
The Mak3rs (author)  ccorvair4 years ago
thanks dude!... :) yea surly i will do my best to do a piezo tech project!....
Lazer_14 years ago
Hi; Nice build, vey nicely detailed pics. One small thing you might do for the battery: increase the max voltage to 13.8, this is the true fully charged voltage for these types of batteries.
Is the charge controller your design? or one from the web? seems very straight forward, do you have a link or schematic. Certainly got a vote from me :-) Keep up the good work!
The Mak3rs (author)  Lazer_14 years ago
thanks .... sure i'll increase the voltage!.... actually i just bought the charge controller circuit from local electronics shop ...
I would say you got a very good simple one which is usually the better ones:-).
Go slow when changing the voltage on the controller , let it catch up, then amybe come back the next day and check on it's settings. There aretimes when they may drift too high. Still a very nice posting. The detail and pictures sure made following along very nice indeed.
urov4 years ago
hehe I was thinking about this just yesterday!! :D You did a great job!!

My design would have been a little different though, with 4 wheels, 2.5x1.5m in size and around 620W of solar power on top ;) the whole thing would have been driven by 2x250W bicycle hubmotors on 26in wheels, totalling 500W, and actually solar power to spare... now if only i could get my hands on some couple thousand dollars :)
The Mak3rs (author)  urov4 years ago
thanks!.... and sure you should take your project seriously coz my project was completed in 550USD... coz i used 40watt solar panel which is comparatively cheap!... that is why the charging time is more... but if you use a much powerful panel you can charge battery in much lesser time! Good luck
urov The Mak3rs4 years ago
550 bucks is a little to pay for a solar powered electric vehicle ;) Just look at what bicycle manufacturers make us pay for an e-bike...!!

If i do build mine, I will use single solar cells and build a panel, may not be as durable as a ready made panel, but definitely lighter and i will have more flexibility (I can set voltage and amperage).

hehe I'll need the luck :P (mainly for finding cheap parts)
zeeshan14 years ago
you mentioned that the speed is up to 30 miles per hour. it is pretty nice. By the way how do you control the speed and how does it perform on hill areas or upward on a hill? does it have enough power to go up the hill?
The Mak3rs (author)  zeeshan14 years ago
actually its a prototype!.... hope you can understand this!
batonas4 years ago
the future vehicle today :D
The Mak3rs (author)  batonas4 years ago
:)... i like this title <3
zeeshan14 years ago
I love your project. We are looking to do something like this in Pakistan. Did you consider doing it on commercial basis.
The Mak3rs (author)  zeeshan14 years ago
thanks....not yet but hopefully i will!
This is a realy cool design. It would seem like it primarily competes with bicycles only and that personaly I would rather have a standard road bike. If its max spead is 30kmph, I'm guessing it can hold that for its maximum distance of 70km and I can personaly bike signifigantly faster than 30kmp as a max speed, I've gone above 50km/h on a flat and I can hold 30kmph for atleast 50 miles with no problems.
Great. I like it !
The Mak3rs (author)  scraptopower4 years ago
thanks ... :)
splazem4 years ago
Cool beans!
The Mak3rs (author)  splazem4 years ago
thanks :)
I rated it a 5 for you! I love it!!!
The Mak3rs (author)  Electronics Man4 years ago
thank you so much!....
Kiteman4 years ago
This is cool.

Did you buy the charge-control circuit, or create your own? If it's your own design, you could add a copy of the circuit diagram to step 9 as well.

The Mak3rs (author)  Kiteman4 years ago
actually i just bought it from a local electronics shop... for 2$
Also cool.
The Mak3rs (author)  Kiteman4 years ago
thanks!..... can you tell me how can i increase the ratings of my instructable?
You can send the address to various blogs, twitter it, post it to facebook, email it to friends and ask them to pass it on to their friends, or work on getting your projects to a quality fit to be featured.