electronics
After 1 year and 4 months, nakahawak na naman ako ng electronic parts. Iba pa rin talaga ang feeling ng gumagawa ng hardware kaysa software..mas exciting pa din. Salamat kay Goks at nakagawa na naman kme ng isang electronic device.
The Device that i am talking about is the game show buzzer. an electronic device that lets us know who rang the buzzer first. you might wonder how the tv game shows ever know who buzzed first. The answer was this electronic device..its fairly simple and there are alot ot schematic diagrams that provide the same lock out mechanism. what we used is the combination of an AND gate and a D-Flip flop. to all non-CE out there, AND gates allows an output of logic high(1) if the inputs are all logic high. a presence of a logic low (0) makes the output 0. a d flip flop is a flip flop whose output is the data input which follows a clock input.
I went to Cariedo yesterday to buy the parts for the circuit. it took me back to the days of our thesis, going to cariedo, the nooks and cranies of that place often times yield the parts you need.although there where only 2 places to look for when buying parts, ALEXAN and DEECO, the side streets can offer you some parts that you might nead like big capasitors/fans etc. for the project, i olny need to go to ALEXAN. but i forgot that ALEXAN was closed during sunday so i had to search for other places to find the prts i need. I ended up in one shop that was along side isetan. The parts where expensive. i mean a chip was sold to me at P25 a piece. beacause of Goks mishap with his stash of electronic surplus from our college days, i had to buy everything..board, soldering iron, wires..resistors..man, the device was worth 700 for the parts alone. While i was in Cariedo, i took the time to look around, for sound systems, posible gifts this xmas, trophies, electronic devices, phones and clothes. A man even called me out offer to sell porn..(remember ‘boss, porn/bold cd/dvd’). I havent got any pics coz as you all know, that place is teeming with snatchers/holdupers( i know the mayors have cleaned up the place but still, the place still have some ) i didnt risk my phone being stolen and sold at a nearby stall.
After the trip, i went to Goks place. He agreed to help me with the circuit. Schematics were simple, and the project was doable in 5 hrs tops. but again we were wrong. making the device work on a breadboard was a case of trial and error, with the errors being to many to count. Our electronics basics where there, but the lack of hands on for 1 year made us sloppy, even asking what the hell is a d flip flop again.
A few hours later, the breadboard was working. we then transfered that to the PCB with goks taking over the soldering. Again mistakes were there, as we forgot to connect the pin 6 and 8 of the flipflops to ground and forgot how to read the LED.
We finished at around 11pm, but felt good abut ourselves. We still have it, the hardware skill of a CE student hehehe…
