Mutchus

This circuit LED reproduces the first LED sequence at this time used by FISA on behalf of Formula single racing. It may perhaps be alive used with slot car sets (such for example HO shin up AFX/Life Like/Tyco sets) or else means of communication controlled cars. IC1, a 555 timer IC, is used as a watch pulse generator. Its output is fed via NAND gates IC2a and IC2c to IC3, a 4024 binary counter. IC2b inverts the O4 output of 4024 binary counter IC3. originally, IC3 is reset and all its outputs are low, together with O4, which causes IC2b to present-day a rational climax to the pin 8 input of IC2c which after that passes pulses from the 555 timer circuit to the clock input of the 4024. IC3 then begins together with. LED Circuit with Timer 555 Circuit Diagram Following the count has reached binary 1111, the subsequently pulse sends the O4 output of IC3 high, which disables IC2c and IC3 stops with. The four used outputs of IC3 are connected to a resistor ‘ladder’ which acts to the same deg...

About a year ago I came across an interesting article in Make Magazine about a guy who took his Fossil Wrist PDA and installed an Apple II emulator on it.   He was able to load many of the Apple II software titles and run them at regular speed.   The thought of having a fully functioning Apple computer on my wrist excited me enough to give it a try.      People that are attempting to do this should be familiar with the Palm OS as well as using jot or Graffiti 2 as an input method.   The Fossil Wrist PDA (now discontinued) features a tiny gray 160×160 pixel screen, the same number of pixels as most palm devices up to Palm III, with 16 shades of gray. The watch runs Palm OS 4.1 with its 66MHz processor and has a tiny stylus hidden in the watch clasp. It is able to carry out most PDA functions, and run any normal Palm OS-compatible application (up to 4.1). It features 8 Mb of RAM (about 7.7 Mb available to user) and 4 Mb of flash memory. Like other Palm OS de...

Before we explain the last part, we want to warn you that it’s obligatory to put on a mask and a pair of gloves to work with acids. We’ll use 110 volumes oxygenated concentrated water and hydrochloric acid solution.  First one can be found in pharmacies and the second one in the shops of cleaning products. We also need a test tube to make an exact measurement, and a plastic container where we’ll put a glass fiber immersed in acid. The mixture will be: one part of the 110 volume oxygenized water, one part of a hydrochloric acid solution and a one part and a half of tap water. To help you imagine the quantity, for this board (20x6 cm9 we have used 50 cc of oxygenated water, 50 cc of hydrochloric acid solution and 75 cc of tap water. Once we make a mixture, we continue to immerse our board in acid. Carefully, you should always wear a mask and do this in a ventilated room, or even outside. The vapour that comes out is very toxic. We rock gently the recipient (left and right) s...