All posts on January, 2008
Posted on 31 Jan 2008
This SMD op-amp project uses the TI RC-4560 dual op-amp chip and a salt water-etched PCB. The builder got the op-amp as a free sample from Texas Instruments and scavenged all of the SMD resistors from old hard drive electronics. The results are not pretty, but they’re functional. The circuit used (with some changes) is the Chu Moy design found here. The CMoy circuit is not SMD. [more]
Posted on 31 Jan 2008
The muio interface is a modular system for sensing and controlling the Real World, from programmes such as Pure Data, MAX/MSP, SuperCollider, Processing or something you have written yourself.[more]
Posted on 30 Jan 2008
Read this article if you have a LCD monitor that either does not turn on or turns on and off randomly. There might even be a high pitch squeal when it is on.[more]
Posted on 30 Jan 2008
A PID (proportional-integral-derivative) controller measures a specific variable (such as water temperature) in comparison to a predetermined setting (ideal temp). The controller then performs a corrective action via its control circuit in order to reach the desired setting (i.e. - increases power to the burner). Result = dinner cooked up just right.[more]
Posted on 30 Jan 2008
The unit contains a solar controller board from the Electronics Goldmine that turns the light on at dusk and off at dawn. The batteries are two lithium 3.6 v cells in series, providing 7.2 v @ 1.1 amp hours. The two white LEDs are in series and draw 20ma. The only other parts used are a switch and power connector for the solar panel connection.[more]
