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solar

Best light bulb to test a solar circuit

I have been building a few solar powered dudes lately and I constantly run into the same problem. Since I mostly work on them at night I find myself in dire need of sunlight. My work bench is lit with a neon desk lamp and it is utterly useless to test any solar circuit. 

Can someone help me find the best possible artificial light source I could use to test my circuits?

Charges your robots batteries while its on the move
Hello everyone. I decided on building a solar panel using solar cells to charge the batteries of my robot while its in use. (so that i have even longer run … Read more
Rolls randomly when charged, protected by shell.
This is an adjustment I made to a solarspeeder so it can navigate rough surfaces, change direction if it hits a wall and is less likely to fall down a crevice. It … Read more

website about batteries

Here is an excellent website about batteries and charging process :

http://www.powerstream.com/home.html

Miller engine .... but it dose work

Ok it looks a mess but it dose Work .... So why am i posting this .... couple of reasons ... first off its my first proper working circuit and i have a few questions about it.

As i have  very little to work with im delighted to get this to work (hopefully that will be changing shortly .... just have to get paypal sorted with my bank and ready to order a few bits and pieces.)

This robot is a free formed robot that I made, its like my symet but better. It uses a simple analog circuit that stores up electricity until there's enough to make … Read more

Can a 3,4V solar panel charge a 3,6V NiMH battery pack?

Can a 3,4V (open circuit voltage) solar panel charge a 3,6V NiMH battery pack?

i built this mini bot for morning call.it is a solar powered beep,the tone&frequency was modulation by light. the circuit was designed by … Read more
Provides you with cheap alternative energy.
 Well, I just thought I'd post what I've learned about solar panels in the past month. They are actually quite simple to make and will cost you alot less then … Read more
Photovore - Light seeking solar powered
  Introducing Medibot2, this is infact the same bot that I introduced a fews years back as MeditBOt1.Back then he was housed in an empty pill bottle. Now after a … Read more
This is a simple Arduino Light seeker. It has an Arduino Duemilinove on board. It is powered by 2 AA batteries for logic( with boost converter), and 4 AA batteries … Read more

solar trickle charger-solar engine

Hi, can anyone help?

I am trying to make my robot battery powered with trickle charge with two solar panels.

Hi guys! I am working on the Symet project from "Junkbots, Bugbots, and Bots on Wheels". He's my first attempt at BEAM robotics, and the first robot I've actually … Read more

First time building MSE, having problems.

I bought a solar cell from Solarbotics.com that has a standard Miller engine etched onto it ( http://solarbotics.com/products/scc2433b-mse/ ), then I got my hands on some transistors and capacitors to use. I soldered everything up onto the board, hooked up my power capacitor and a motor. I have my multimeter connected to the leads of the power capacitor and I can watch the voltage climb up to 2.6V and then stop.

Solar Trike

Much thanks to D&G Green Products for their support http://www.dggreenproducts.com/

 

 

Super Capacitor in solar power supply - a few queries

I intend to build a remote 'weather station'

The station will:

  • Be completley independant of any external power, ie, it will produce its own power via solar cell(s)
  • Measure temperature only
  • Transmit its finding over an RF link to an indoors reciever

Instead of using a rechargeable battery supply with charger circuit, i have decided to use a 35F, 2.7V super capacitor to smooth and store power.

this is a new type of beam robot: a talker it  is just a prototype and a first of its kind,when it is in sunlight ,it springs to life, it can talk or chew all of … Read more
Wavecrafter chirps and beeps at you to let you know about things and stuff.
So, a little while back I made a posting about adding a low-cost ADC module to micros for various reasons. At the same time as I was testing this concept out, I … Read more

Need help with a solar-powered boat robot

Hi,

Two friends and I are starting to make a solar-powered boat for a competition (here's the link: http://techfest.org/competitions/torque/solarsplash/), and we need a little help. We're beginners with no previous experience.
Built this little guy for a mate of mine. The main housing is from a speaker set designed to plug directly into a small MP3 player. The base is a machined aluminium … Read more

step-up or joule thief or.. ?

I`m trying to convert the wireless doorbell outside from battery to a renewable source such as solar or wind. My problem lies in that the battery required is a 9v.

My first thought was to produce a high enough voltage to charge the 9v but that might require more solar panels than I have. The 2nd idea was to use a lower voltage battery or super-cap as replacement and stepping up the voltage to 9v. I haven`t taken any measurements of current usage but I don`t imagine it could be more than a couple hundred mA while pushing the button and much lower in idle.

Meet Mr. Lobster. He's big, ugly and lazy - but he's also environmentally conscientious. Now in full-colour video! Wow! Read more
Act cute, try to keep itself charged
Using a
Not much to say about it at this point; this little guy is basically going to be a living ornament. Read more
This a s flexible solar cell from outsidesupply.com. Its rated at 3v and 25ma, but i get 4v out of it. It comes with free shipping. Its very flexible as you can see … Read more

why won't my phone charge?

HI I NEED HELP! PLEASE?

;-)

Just kidding. This is scraping the bottom of relevancy though.

Could you perhaps point me to a good documentation source for charging a 3.6 V battery in an old Nokia? Or could you solve my problem directly for me?

My dad is about to go walkabout in the south of Europe. He bought a 12 V photovoltaic power source that folds like a wallet. He seeks my help on the simple stuff, like mechanical compatibility of connectors and pinouts. And soldering.

Go forward and turn because of allignment :)
Using a
Well I am waiting for my version A.5 picaxe and got an idea for this little guy. He is not fully done yet but getting there. Stevie is a BEAM bot/Solar Roller. As … Read more