Picture of Wireless Robot V2 (Support WiFi & Bluetooth)
Wifi Robot V2.JPG
Wifi Robot V2 b.JPG

Step 1: Car Structure

I get The motors ,gear box and tires from two broken car kids toys from Scrap market nearby , they cost me about 10$ and I connect them using din rail and plastic as shown in the pictures.

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srujan75671 year ago

sir can you please say me how to draw the data flow diagram for this robot??

Hey, Sorry to ask but please.. can you mention the links of these items which are sold on online international shopping websites.. the links you mentioned is not delivered in my country(India)...for ex. Amazon, Flipkart, Snapdeal, Ebay.
Hi Husham Samir, you're project wonderful(Wireless Robot V2), i want to create it, can i have pdf and program this project. please send article to my email:mohsennoruzi@gmail.com. thankyou
dullawa7771 year ago
dear sir
nice and great work. i like to test this project, can i get PDF file of this full project?
please can you send it to my email. my Email is Indrajith105@gmail.com. thank you,

best regards
instead of using serial to ethernet converter, i'm using serial to usb and usb to ethernet combo. But i still don't know how to send control values from putty to the microcontroller for the controlling part. Can you help me plz?
Husham Samir (author)  gaurav.srm.10172 years ago
okay explain more how did you connect these two things together and how you connected to MCU.
for putty and how to send Information ,I previously told you to read the below tutorial from extreme electronic , every things mentioned there .

How to send control the rover by putty? what values do i have to input in putty to move the rover? i saw your video but couldn't understand it. Help please!
from where did you download this com redirector software?
Husham Samir (author)  gaurav.srm.10172 years ago
CD included with the converter
but isn't the software free for download
Husham Samir (author)  gaurav.srm.10172 years ago
well I get it free when I bought the converter.
Which converter?
I'm sorry to bother you, but can u please send me the com redirector software as a zip file to my mail id.I will be highly grateful to you if you did.
Husham Samir (author)  gaurav.srm.10172 years ago
Step 6: Serial to Ethernet Converter
I bought a TP-LINK wireless N ADSL2+ modem router for the wi-fi access point. I just want to know how to give a portable power supply for the router that will be placed on the rover.
Husham Samir (author)  gaurav.srm.10172 years ago
First of all check the DC voltage needed in your wireless TP link.
in my case TP link took 9 volt 1 Amp so I use L7809CT voltage regulator TO-3 type
Can you help me in configuring the router?
Husham Samir (author)  gaurav.srm.10172 years ago
read the quick manual for this router
set the wireless as access point (AP) and put an SSID name for it.
I am stuck with pairing of Bluetooth module and mobile android app.
It is asking pass key again and again
Husham Samir (author)  ayush aggarwal2 years ago
Hi if you are using the same bluetooth module ,the pass key is 1234
if it didn't work check the web site belong for this bluetooth module.
Will this program work for atmega32?
Husham Samir (author)  gaurav.srm.10172 years ago
I am not sure but I will say yes.
Are you using two L298ICs' or a single one here
Husham Samir (author)  gaurav.srm.10172 years ago
Two L298 but each one connected to one motor as seen in the diagram attached in step 3 with attached data sheet
But L298 is a dual H-bridge driver, isn't it. It can run 2 Motors at once, right?
Husham Samir (author)  gaurav.srm.10172 years ago
yes it its but for higher currents, outputs can be paralleled (Read the data sheet for L298 page7)
Hi sameer, When i'm using your code , its showing assembly failed. Does that mean that there's something wrong with the code or something wrong with what i did?
Husham Samir (author)  gaurav.srm.10172 years ago
in project type you should chose AVR GCC .
go to below article in and see the pictures in step 5.

Now its showing "Build failed with 23 errors and 2 warnings..."

Husham Samir (author)  gaurav.srm.10172 years ago
you are using xboard 2.0 from extreme electronic web site and there is a full tutorial explain how to use USART in below :
if you make the above test successfully ,you can just add additional command to make the motors on.
also below tutorial represent your project and its Xboard 2.0
don't confuse your self between two web site ,just use the web site that compatible with your circuit which is extreme electronic and when you finish remove the serial wires and connect them to the serial to Ethernet converter in order to make it wireless.
about the error I test this code again on 14 april-2013 and there is no problem in the code (check my comment in that date and see the build result).
check you might forget the bracket while you copy the code.
can i use "vpl handy programmer" to burn atmega16 chip.,.,.,
or i have to use any other burner
Husham Samir (author)  ayush aggarwal2 years ago
I don't know ,I didn't use this type before but the programmer used with AVR studio to burn ATMEGA MCU
STK500 & STK 600 (Development Kit).
or ISP (in system programer ) like AVR MKII ISP or JTAG MKII

the best suggestion ,the cheapest and the fastest is to buy arduino development kit
and program your MCU directly without a programmer device because there is a USB built in the development kit ,so there is no need to buy a programmer device .
also the code in arduino much easier from AVR studio and you will get better support and solution in the websites .
after programming your MCU you can remove it and put it in your circuit or you can keep it in the development kit and use it as your circuit because its cheap.
search in youtube on (arduino tutorial ) and you will see how many things you will be able to do with this kit.

Husham Samir (author) 2 years ago
you can use AVR studio to burn your MCU.
check the pictures in step5 for the below articles ,it will give you some guide line:

for the programable device I use AVRISP MKII
if you use arduino development kit you will not need any thing from these ,you can directly connect the usb and burn your MCU.
Which software should i use to burn avr????
how to make hex file for atmega
I tried in AVR STUDIO 4, but there are 2 warnings in it.
Is there any other way to burn avr
Husham Samir (author)  ayush aggarwal2 years ago
in AVR studio 4 click on build or F7
it will show you 2 warning below (just ignore them ):
Build started 14.4.2013 at 18:56:31
avr-gcc -mmcu=atmega16 -Wall -gdwarf-2 -Os -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -MD -MP -MT test1.o -MF dep/test1.o.d -c ../test1.c
In file included from ../test1.c:8:
d:/winavr-20100110/lib/gcc/../../avr/include/util/delay.h:85:3: warning: #warning "F_CPU not defined for "
../test1.c:43: warning: return type of 'main' is not 'int'
avr-gcc -mmcu=atmega16 -Wl,-Map=test1.map test1.o -o test1.elf
avr-objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature test1.elf test1.hex
avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex test1.elf test1.eep || exit 0
avr-objdump -h -S test1.elf > test1.lss

AVR Memory Usage
Device: atmega16

Program: 576 bytes (3.5% Full)
(.text + .data + .bootloader)

Data: 0 bytes (0.0% Full)
(.data + .bss + .noinit)

Build succeeded with 2 Warnings...

then click compile (Alt-F7)
then go to build -export make file .
it will generate the HEX file

don't forget to set the fuse bit according to what you have in your circuit (external frequency resonator or crystal clock ) ,any mistake in this step you will lose your MCU.
hello sameer...
I've got a few more questions for you-
1. i'm planning on adding an ultrasonic hurdle detector to my rover..do i neet some extra lines of codes for that too...?
2. I'm using a xboard 2.0 from extremeelectronics.com as the pcb board on my rover but it only has a single L298 dual h-bridge driver and i need to control 4 motors...If i add one more L298 driver will it work?
3.Will ur code be compatible with the xboard 2.0?
Husham Samir (author)  gaurav.srm.10172 years ago
1- yes ,you will need extra code for ultrasonic and it will be more complicated ,so I suggest you to finish the first step then think about ultrasonic.
2-I didn't work with xboard 2.0 ,so I don't know but if there are a free four I/O pin in MCU ,you can connect additional L298 circuit but you have to ask the person who design the board.
3- I don't know but in case you want to try ,just be careful for clocking issue, I am using External frequency resonator (4 pin) not crystal (2 pin) ,so the fuse bit will be different and any mistake in this step you will lose your MCU.
One more question...
Is it necessary to use Cisco Linksys WRT54GL Wireless-G Broadband Linux Router or can i go with any other because i have to hack into it, right?
Husham Samir (author)  gaurav.srm.10172 years ago
in my case I use TP link wireless router .
you can use any other wireless if you have the (serial to Ethernet converter) ,if you don't have this converter you have to go with the old way by hacking cisco linksys.
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