I'm trying to build a 4-6 wire "trigger trap" circuit that has a piece of paper with information about the next clue in a scavenger hunt, inside of a box(or something similar) with a water Balloon resting on top. A pressure plate would be in play, so if the students try to lift the water...
Hi all! Purchased 2 Tektronix 2235 Oscilloscopes with the hopes of making one good one out of the two. The best one of the two works to some degree, but to stop the sine wave (or square, makes no difference) the level control will not cause any appreciative effect on being able to slow or stop...
Hello i have a nissan pulsar NX 1988 and when i open the doors a bell is ringing.
So i thought that i could change the sound of the bell with a custom MP3 sound.:woot:
ive seen MP3 modules that i could replace the bell with, but i need the sound to be triggered
just one time and im not 100%...