[Gary Honis] has been modifying his Canon Digital Rebel XSi in order to do astrophotography. He previously removed the IR filter and replaced it with a Baader UV-IR cut filter that lets most infrared light through. However, in order to reduce noise in the pictures, he had to cool the camera down. He based the project on a peltier cooler that he salvaged from a powered beverage cooler. He made a small aluminum box and insulated it with styrofoam to hold the camera body. The peltier cooler was then attached on the side. It takes just over an hour to cool the camera down to 40 degrees, but the shots come out a lot clearer.
[Max Weisel] recently created a Peltier-based cooling/heating system that fits into a backpack. The system uses two Peltier units, each running at 91.2 watts, with computer heat sinks mounted on one side of the unit to dissipate the excessive amounts of heat generated. While he was originally trying to build a cooling backpack, the use of the Peltier units meant that the cool side would become warm when the direction of current was switched, meaning that the backpack could become a heating backpack with the flip of a switch. In order to power the two Peltier units, he uses two 12v motorcycle batteries, weighing in at around 5 pounds each. While this backpack might be a little heavy for your back, it looks promising for anyone who needs to keep things cool (or warm) on the go.
Hacked Gadgets pointed out this great peltier based beverage cooler. It has a pulse width modulation based controller driving a 12V 80W peltier. Alan also pointed out Hack-A-Day reader Chris Garrison’s peltier beer cooler from last summer. The Defcon cooling contest from last year also featured a peltier based cooler.
[UPDATE: Afrotech’s Snapple Cooler or How to enhance your beverage with iron oxide. Thanks liam]
[UPDATE: PeltierBeer cooler first seen on Slashdot [thanks Wiki Multipla]. Mattt’s Peltier Beer Cooler on Bit-tech [thanks dougedey].
Continue reading “Peltier beverage cooler”
Here’s a good 4th of July project: Chris Garrison sent in his portable peltier based beer cooler. He saw a cheap peltier junction for sale and decided to build a mini-fridge. It holds 14 cans and is portable enough to place wherever needed. He does comment that his power supply isn’t quite up to snuff, but it does a passable job for only spending $35 on the project.
Continue reading “Peltier beer cooler”
i found this link in my inbox, courtesy of j. peterson. we’ve posted a peltier beverage cooler before, but i think this one deserves mention as well. it hasn’t had the finishing touches, so it’s not as pretty yet. however, this one does come with a digital temperature readout. more importantly, it’s big. you could countersink a couple of these babies into your dining room table and start living the 21st century good life, as imagined way back in the mid-1900s.
just think, your home of the future, complete with soda-cooling, plate-heating countertops and a kitchen computer.
Continue reading “peltier desktop drink cooler”
using rechargeable batteries, a 1u cpu-fan, a 118w peltier cooler, a cold-plate and some pretty hacked up pc parts, you too can make a beer cooler and keep that brew in the sun. not that you’d really go outside that much if your hobby was hacking up pcs to make coolers, i haven’t been outside in weeks.
Continue reading “beer cooler with peltier pc cooling gear”
Ever play with a Peltier plate? They’re these really cool components that kind of look like a ceramic sandwich, and when you put power into them, one side gets hot, and one side gets freezing cold! [Joseph Rautenbach] decided he wanted to try making his own mini fridge out of one — which is typically how most modern mini fridges work these days.
The peltier plate he’s using draws 12v at about 3.5 amps — so about 50W — and if you don’t heat sink it properly you could burn it out in a matter of seconds. Peltier plates only care about the temperature differential between the two sides — if you don’t take the heat away from the hot side, it will soon overheat and destroy itself.
[Joe’s] using a styrofoam cooler for the fridge with a pair of computer heat sinks and fans for the peltier plate, and a temperature PID controller he bought off eBay. The external heat sink sucks away the excess heat generated by the peltier plate, and the internal one helps spread cooled air around the inside of the styrofoam cooler. The PID controller allows him to set a preferred temperature to maintain in the box, which will then control the outputs to keep it that way.
Continue reading “Building Your Own Mini Fridge?”