Let's Make Robots!

microcontroller choice

i have  a problem: i only have on uc, an arduino, and have to build a tx unit with some cheap ebay radio modules. does anyone have any suggestions as to a small microcontroller for this unit. it only needs 2 or 3 channels.

 

Navigates with commands from a wireless nunchuck
Using a
This is my first robot(arduino based). It is currently incomplete. I started by getting some standard hitech servos, and then modifying them by removing both the … Read more

8$ compass

4 weeks ago i ordered the dc-ss503 magnetic sensor module with tilt compensation, and i'm now trying to interface it with arduino. so far i have obtained the 4 values from the i2c bus, but i can't understand how to actually get a heading from it. this is the datasheet i found, which i know is the right one: http://gongxue.cn/lixueyuan/UploadFiles_8285/201004/2010042114001679.pdf .

does anyone have any experience with this module and can possibly help me? thanks

battery

i have seen this nice battery around called the t-1248a. it's a nice battery for portable applications. it can be fond with a charger on ebay for 27$. should i buy it

Bad things happen

 

Now that i got my new battery(8.4v 1000mah, down below), my bluetooth receiver for my "controller" died. Now i have to get another one.

 

Stuff in the mail

Horray.

Today i just received two packets in the mail. In one of these was an lcd which i bought for less than 5$ incl. shipping, while in the other was a 434 mhz rf link kit, which cost around 8$. So far i haven't tested either, as i received them moments ago. I will soon be using them though, proabably to make a custom arduino rf controller, i only need a second arudino..

 

 <== picture right here

Analog in = digital in and out
This is just a quick arduino tip. Even though there are only 14 digital i/o pins, the arduino has more. Analog pins can also be used as digital. Analog pins 0-5 are … Read more