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Easy Cheap Power Control, Distribution & Charging for Large Robot

Since I primarily build large robots, I have always had issues with power control, charging, & extending battery life. I use large gell cells and it seems like I was always either over-charging them or not charging them often enough and they would die prematurely.

It occurred to me last night that instead of trying to design & build my own power controller, (which I've always done in the past), that the answer to my problem might be as simple as an off-the-shelf unit designed for solar power systems.

Working arm and hand able to pick up *light materials and make hand gestures.
A while back I read an Instructables article on animatronic hands, where they ran wire through special tubing and pulled on it to simulate a finger. This was rather … Read more
Navigate without killing itself
Using a
Hello once again LMR! I recently made a few changes to my robot “Mobile Arduino Experimental Platform” (MAEP), and have written this tutorial on how to create a … Read more
Wanders aroung trying not to bump into walls too much.
Using a
I wanted to make a simple bot to take to Maker Fair when I stumbled on the goldfish box at the supermarket.  The box and the battery holders are the only parts … Read more

a circuit to make a 3 way switch

Thanks a lot for the support you people showed last time. I want to make a circuit which has 2 LEDs and a normal on/off switch (at least) and other components as required. The circuit should function like this- When i turn the switch on for the 1st time, LED 1 glows but LED 2 remains switched off. When i turn the switch off for the 1st time, both LED 1 and 2 remain off. When i turn the switch on for the 2nd time, LED 2 glows but LED 1 remains switched off. When i turn the switch off for the 2nd time, both LED 1 and 2 remain off. Please provide me with a circuit diagarm for the same and

BEAM robotics

This is a forum where you can comment about BEAM robotics!

This little bot loves to "jitter" around and hide behind teeny tiny objects! I constructed it to sell on etsy.com and I also enjoy building robots. All the parts … Read more
Follows the light from a lighter
Using a
Hi, My name is Zuzu, I live in my masters pocket and usually I sleep at day, but at night, when all the lights goes out, I will wake up and I will seek the most … Read more
Learn how to use your Arduino, and blink an LED
Hello all! In this walkthrough, I'm going to show you the basics of the Arduino and how to blink an LED. I know this has been done many times, but since I'm hoping … Read more

Common Electronics Knowledge Questions

Hi LMR. I have already made a robot, as you may know, but all I did (on the physical/electrical side of things) was plug a few cables into the pre-made servo ports on the Board of Education, as my copy of Electronics for Dummies told me to do. I read the entire thing, but they explained a few things in a way I didn't understand. Like the names for stuff, and what each means. Until now, I thought voltage was a measure of battery capacity. I FAIL, I know. I've sorted it out, so now I know about amps and volts, but I have a couple technical questions regarding electricity.


 hello everybody here...!!!

Actually m from india . speaking straight, " i can't spend much but also can't live without robotics".

so please give me some advices to not to kill my love towards robotics. i m a student of electronics but here in my college we do not have such facalities for electronics students. so please guide me about how to begin and what resources to use to get over the money problem. 

i really need your help.......!!!!

it will avoid walls using two sensors
here is a small project, that I made with my friend ( Stefan ) if you are a real robot builder , you have alrady got all the stuff you´ll need turn off your … Read more
well, it's my first manipulator. ist's nothing special, but it's better than everything i did with this metal contruction box i have. it would be great, when there … Read more