Let's Make Robots!

KTY83-110 sensor maximum temperature

Hi all,

 One question for you:

 What do PTC sensors as this one KTY83-110 (datasheet here: http://www.datasheetcatalog.org/datasheet/philips/KTY83_SERIES_5.pdf) do when the measured temperature exceeds the one specified in the datasheet? 

In this case it is 175 degrees celsius, the temperature I would measure might go well over 200 degrees celsius.

Will it still return a reading? Will it smoke or will it blow?

hbridge basic question

Does a hbridge requires a positive, negative, and ground?

parallel, sync, async data transfer

which one is the fastest amongst those three?

line follower

want to build my first bot and it wil be line followwer looking for the simplist and cheapest to help me start to understand electronics any suggestions

Multiplexing for my chess robot

Base over Apex showed to me that the "ghost piece" i was talking about could be fixed this way below. 

 Oh yeah i am doing this because my shift registers... well something happened...no im doing this.

A question about hooking up 2 LDRs to 1 picaxe input.

Hey everybody. I am a long time lurker on this site and I would like to thank you all for all the valuable information here. I have built a start here bot and a few more complex things of my own. Now I am trying to build a very small sized robot with a picaxe 08m.

I am a beginner in electronics. I know how to hook up a LDR and read the input, but I would like to know if there is a possibilty to hook up 2 to 1 input. The problem is I am short 1 input on my robot and all the other picaxe pins are in use. The 2 ldrs would be used as left and right eyes in a sense.

Processing mapping project

Project verview: 

 

mapping system using serial comms and processing 

 

 

I can do the coding and datbase side of things, hardware will be dependant on everyones robots but i use arduino and plan to go n to a beagle board i nthe long run and Cris uses pic so we should be able to make this pretty portable for everyones projects.

 

At the moment im working on a nice GUI(Graphical User Interface) to make it easier to see whats happening and hopefully cut down on development time.

 

Ideas anyons time :D  

PING))) and Picaxe 18 (here we go again)

I have read and researched how to connect the PING))) and Picaxe 18 together. I don't need to know the code to write, thats easy enough to figure out once you have made the connections. What I NEED to know is how to connect the two things together? Believe me, I have RTFM, I have researched everywhere online, and I have read Datasheet after Datasheet, and all I have have found is a lot of people arguing about why and why not.

This is extremly frusrating. I am about to throw the Picaxe 18 away.

needing help on a crane/boom to r/c

hello  everybody im new to this forum

 i build custom radio controll semis for a living .all one of a kind.73 build to date.

my new build is a crawler recovery truck .im at the point where i need to start thinking and building the boom,i want to make a working crane/cherry picker/boom/controll arm what ever you want to call it.

 the arm it self had to extend i say about 24 inch and has to pick up about 4 pounds

im running a 7.2v main battery and a 4.8v receiver battry.i would like to operate the boom from my radio.