This is a simple project that hopefully I wont over complicate. Since he Squeegee needs to get as close to furniture and the toilet and bathtub as possible this my be a challenge. After all we spend most our time trying to get our robots to avoid the objects in the room. Im giving new life to a radioshack robie jr rc controlled robot.
By jstarne1
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Josh, will this do what you need? It has a good write up about it.
http://www.pololu.com/catalog/product/1185
Mmmmmm, Pololu.
I love Pololu. Great little boards.
Here is info from www.societyofrobots.com www.societyofrobots.com/robotforum/index.php?topic=14287.0
Current Sense IC
This ~$5 chip, using a really tiny resistor and a built in high gain amplifier, outputs a voltage in proportion to the current passing through it. Put the chip in series with what you want to measure, and connect the output to a data logging device such as a microcontroller.
This particular schematic below can measure current use of a servo. But it can easily measure current from any other device with no modification - and even multiple items simultaneously too! The capacitor is optional as it acts as a voltage buffer, ensuring maximum continuous current.
Another link to look at that talks about current sensing.
www.romanblack.com/current.htm
Link to a current sensor by DFRobot.com
www.dfrobot.com/index.php?route=product/product&product_id=580#.Udj1fW0rNyk
Adafruit do a board too, I ordered one to test out on Melvin or Jarvis (and if it works well I'll get another). Simple breakout board, nothing fancy, INA169 Analog DC Current Sensor Breakout
Josh, do you still have that extra Robie Jr remote? I just bought my son a Robie Jr and it didn't come with one.
Nadine
Dude I love ur squggie robot its really awesome and very usefull I'd love to have one in my home much better than Iroomba