MHVLib [Dec 31, 2010]

MHVLib [Dec 31, 2010]: "Runtime library for AVR microcontrollers"

Versaloon can program hardware from several manufacturers

Versaloon can program hardware from several manufacturers: "

Versaloon is an open source, USB connected project, that centers around an STM32 processor and provides a standard JTAG pinout. Above you see the Nano version which has a 10-pin JTAG connector, but there is also a 20-pin option on the Handy model. Great, another JTAG programmer. Well this can do a bit more than that. With a bit of help from the software it has been turned into a programmer for ten different types of hardware. Obviously this should be able to program anything that works with the JTAG protocol, but the script adapts it to work as an In System (or In Circuit) Programmer too. So far the list of programming targets includes STM32, LPC1000, LPC900, STM8, AR8, MSP430, and a few others.

We had some trouble finding an actual picture of this hardware. If you’ve got one, snap a picture and leave a link to it in the comments along with your thoughts on the device.

[Thanks Geekabit]

Filed under: tool hacks

"

AVR Sonar [Dec 22, 2010]

AVR Sonar [Dec 22, 2010]: "Polaroid 6500 Sonar board with AVR2313 and display for 'Car-in-a-garage' Distance Indicator Application"

Historical Thursday: Baghdad Battery

Historical Thursday: Baghdad Battery: "

During a 1936 excavation of an ancient village just outside of Baghdad, a unique piece of pottery was unearthed. A small vase contained some sort of rolled up metal sheet with another cylinder inside of that. Not sure of what to make of the find, archaeologists sent the piece to National Museum of Iraq. 2 years later, museum director Wilhelm König speculated that the piece may be the world’s oldest battery.

More of these pieces containing similar materials were found, and although no official tests have been run, they are all believed to be from the Parthian period, which spans from about 250 BC to 220 AD. König noticed heavy corrosion on the metal inside the vase and deduced that this was caused by some sort of citric acid, which acted as an electrolyte to generate current. After publishing his findings, scientists from around the world tried to unlock the mystery behind these so-called batteries.

Willard Gray, an engineer in Massachusetts, decided to attempt to make a replica of the batteries. After getting hold of some drawings and plans of the device made by German scientist Willy Ley, he successfully created a replica which generated half a volt of electricity. 30 years later, another German scientist tried his hand at the device. Arne Eggebrecht believed that grape juice was most likely used as the citric acid fuel; his model gave off almost 0.9 volts.

Unfortunately, this discovery doesn’t mean the ancient Persians had a way to electrically light their homes or power their clay Game Boys. The batteries were used for electroplating, transferring gold particles onto silver objects or some such witchcraft. There may be other uses for these devices and they might have been much more common that previously thought; the batteries for the large part still remain a mystery in the scientific community.

Pictures and Information courtesy of: World Mysteries and Wikipedia.

As always, if YOU have an idea for a Historical Thursday, let me know at thereifixedit@gmail.com

"