Hobby Electronics Basics

  1. Home
  2. Hobby Electronics Basics
9387 Threads Posts
to

Worth reading in Hobby Electronics Basics

DC value

Hello, I need to measure the average DC value of a square wave of 80MHz frequency (going from 0V to 5V, 50% duty). When...
7 comments posted 20yrs
posted by anwarsosman
7 comments posted 20yrs posted by anwarsosman

Electronics Study

Hi, All I'd like to study GCSE Electronics by Distance Learning / Home Study. Does anyone know of a provider who offers...
2 comments posted 20yrs
posted by paul
2 comments posted 20yrs posted by paul

Battery type for calibration reference

Hi, all. My question has to do with how to provide a voltage calibration reference for users who may not have access to...
12 comments posted 20yrs
posted by nospam
12 comments posted 20yrs posted by nospam

Laptop track-pad

Any thoughts on repairing a laptop notebook Track-pad (cleaning, etc)? It works, but is erratic. Sometimes wetting your...
1 comments posted 20yrs
posted by N
1 comments posted 20yrs posted by N

Serial IN shiftregister + multiplexing

Hi all, I need to use it to extend the the number of input pins of my PIC16f628. I need to control 128 push buttons. Wh...
15 comments posted 20yrs
posted by diederickh
15 comments posted 20yrs posted by diederickh

Decouple fans and hard disks supplies

Hello respected engineers! I've built myself a frame where I've put six hard disks for a RAID5 system, and six 8x8 cm f...
3 comments posted 20yrs
posted by mike
3 comments posted 20yrs posted by mike

PIC16F690 and HD44780 display

I'm trying to get a PIC16F690 (mplab's PICKIT 2) to send characters to a 2x20 HD44780-based display. I've cobbled bits...
6 comments posted 20yrs
posted by randy.day
6 comments posted 20yrs posted by randy.day

X-rays for telecommunications?

Hi: Has the use of x-rays for telecommuncations ever been considered? I imagine that x-ray photons would have more band...
4 comments posted 20yrs
posted by glucegen1
4 comments posted 20yrs posted by glucegen1

Radio transmission of data to pc

I am looking for a way to monitor equipment remotely. I am hoping to use radio transmitters to send a signal to a recie...
1 comments posted 20yrs
posted by sherman.nater
1 comments posted 20yrs posted by sherman.nater

very high current DC switch

Does anyone know where I can get a reasonably priced ($30 or less) switch that can handle at least 200 amps at 13.8V? -...
10 comments posted 20yrs
posted by 1qazse4
10 comments posted 20yrs posted by 1qazse4

Choosing a calculator

Hello evry1, I need to buy a calculator. I m a freshman in BE electronics. Here we have a good range of casio calculato...
36 comments posted 20yrs
posted by h.irfan
36 comments posted 20yrs posted by h.irfan

Relay used to control home appliance

Hi, I'm working on a project in which I need to be able to switch on and off an upright freezer. I'm trying to control...
10 comments posted 20yrs
posted by jalamia
10 comments posted 20yrs posted by jalamia

USB Switch with SPDT

Hi , I have an project where in i need to share a USB mass Storage Device among two HOST PC's. The hosts would not use...
6 comments posted 20yrs
posted by madhava.Gadicherla
6 comments posted 20yrs posted by madhava.Gadicherla