Let's Make Robots!

Need putting on the right path

Hello all, First post so.... nice ta meet cha.

im fairly new to robotics iv built a couple of things in the past but have stuck with primarily mechanical robotics (not sure if thats the right term) rather than ones which require any processor other than my own brain. in all honesty im not even sure if they classify as robots.

Need putting on the right path

Hello all, First post so.... nice ta meet cha.

im fairly new to robotics iv built a couple of things in the past but have stuck with primarily mechanical robotics (not sure if thats the right term) rather than ones which require any processor other than my own brain. in all honesty im not even sure if they classify as robots.

My ULTRASONIC (HC SR04) sensor is giving large negative values

I bought it and it was workin gfine with the code and after inserting  it in my project , when i checked it shows large negative values, I tired changing pins , but it doesnt work shows values like 3315,3325 random numbers 

I dont know whether there is a problem with my sensor or my code is wrong. Really worried please help guys.

 


CODE

 

#define trigpin 3

#define echopin 2

void setup()

{

  Serial.begin(9600);

OK, I have just given up making a balancing robot. Ever.

Making a balancing robot - or even dreaming of making one just lost it's appeal.. because I will never make anything like this.,

Subsumption based robots

An awesome presentation on subsumption-based robots by David Andersson, it's a bit long, but it's totally worth it.

 

Which MOSFET to use for battery voltage measurement?

Hello all,

I'm currently building a buoy with a string of sensors that measures temperatures at different dephts. I'll be making a blog or Something Else later.

The thing is, I want to measure the voltage of the battery (Li-Po) to be able to predict when it needs to be charged since the system will operate "out-there-in-the-middle-of-nowhere".

About HC-05

i got two hc-05 to control my robot with 

but i cant realy seem to be able to connect the arduino with it!

i wrote a simple code about getting the chars i type on the computer to send it to the arduino and from the arduino to the module and then gets the respone back from the module to the computer

but i tried many times to connect it with it and it didnt seem to workout

the rx of the module is 3.3 level so i made a voltage divider with 3 10k R but how many times i try it doesnt work

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Raspberry Pi Camera (How To: Stream)

Hello There LMR. I bought a raspberry pi camera and i make some test with it to see if it work and it works fine . Now i have a question how can i stream with it on the net or localy (what is more easy) and what programs i have to install on my raspberry. I also check on the net but i can't find all the info i need. If someone know please tell me!

Programing for begginers

Hi All,

        Over the last few months I have finished building the Rover Explorer, I used the sample program from Oddbot, and have sorted out some of the misstakes I made wiring it all up.