Energy Storage and Density
Mjlorton gives us a lesson on Energy Storage and Density. This will be of interest to anyone who makes projects that run from batteries.
Peltier Module Cooling
If you have a project that needs some cooling you might want to look into using a Peltier Module. RimstarOrg found one in an old water cooler, with a bit of disassemble he found a system that consisted of a 12 volt transformer which feeds a small board which coverts it to 12 volts DC that the module needs and finally there is a small circuit which measures that
Scale Hacked to be Read using Parallax Propeller
Ben Krasnow wanted to use a cheap digital scale to use in a project that needs to automatically dispense the correct amount of material and stop when the appropriate weight has been achieved. We have seen this type of system used in factories that bag things by weight such as potato chips. These small scales use a strain gauge to read how much weight is on the scale. The
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Using a Parallax Propeller chip Luis created a way to add some realism to his RC truck. Hazard lights flash and even make the clicking relay sound when activated. The propeller plays the wav files that bring the truck to life. Nice effect when the truck starts moving, you can hear the motor start to pick up speed. There is a product called sound racer that lets you bring your
Jack-o’-lantern Halloween Project
If you want to scare some kids as they approach your house to get some candy on Halloween have a look at this project by GreatScott. He uses an Arduino which has an ultrasonic sensor connected to it. The sensor detects when someone gets into the scare zone. To scare the curious kid some LEDs light up the pumpkin and a buzzer sound. This idea could be adapted many
Name the Thing Contest – 241
 The prize this week is an 6V 0.6W Solar Cell. This contest will run for one week (October 26 – November 1, 2013). Ending time is based on central standard time. To enter, identify the item above and what it can be used for. Please note the image above is a side view of the thing. Please do not give the answer in the comments. Send an email
Ball-Balancing Robot
So if making a robot that can be remotely controlled wasn’t a tough enough challenge the guys over at Ufactory decided to make one that can roll around on a ball. Great looking design and it sounds like they are going to do a Kickstarter for it and release it as open source hardware to the community. I can’t wait to see a larger version that can be ridden