Search found 5 matches

by nigelwright7557
Thu Oct 10, 2019 11:55 pm
Forum: Other Electrical/Electronics
Topic: Hantek 6022BE Oscilloscope Software Overview
Replies: 4
Views: 791

Re: Hantek 6022BE Oscilloscope Software Overview

With digital scopes you have to be careful with bandwidth and sampling rates. A 100 million samples / second scope is only good for 1MHz bandwidth. This is because to see a nice sine wave on the screen takes about 100 samples. If you just want to use one for low frequencies then there are some very ...
by nigelwright7557
Tue Jul 09, 2019 4:46 am
Forum: Other Electrical/Electronics
Topic: Adding sound effects to a layout
Replies: 19
Views: 1926

Re: Adding sound effects to a layout

I did a station announcement system many years ago.
I cant remember now which IC I used.
It had a record mode and playback mode.
I also play guitar so used my echo effects to enhance the voice.
For a little box it was pretty loud and went down well at shows.
by nigelwright7557
Sun Jul 07, 2019 3:50 pm
Forum: Other Electrical/Electronics
Topic: Layout electronics.
Replies: 4
Views: 516

Re: Layout electronics.

Left pcb is station stop with 2 aspect signal driver.
Right pcb is shuttle controller.
Image
by nigelwright7557
Sat Jul 06, 2019 9:20 pm
Forum: DC
Topic: Brake van rear red light
Replies: 36
Views: 4742

Re: Brake van rear red light

I did a flashing red LED controller using a 8 pin microcontroller on a guards van. I had a small switch beneath the van to turn it on/off. LED's cant be driven by voltage but only a current so need a resistor in series with them for long life. Occasionally you can get away with just a battery but it...
by nigelwright7557
Sat Jul 06, 2019 9:15 pm
Forum: Other Electrical/Electronics
Topic: Layout electronics.
Replies: 4
Views: 516

Layout electronics.

A number of years ago I built my own layout on a 6 by 3 foot baseboard. It was basically a 4 branch layout. I made it fully automatic and shunted 3 trains back and forth into 4 sidings. The direction and speed was controlled by a microcontroller. The 2 sets of points were controlled by the microcont...