Some of Our Sources
- Engadget
- Joshua Blankenship
- Smashing Apps
- TutsPlus - Design
- Fuel Your Creativity
- Noupe
- Reencoded
- Line 25
- CSS Tricks
- Spyre Studios
Help Webnuz
Referal links:
October 23, 2021 10:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/Gigoafev_zA/audio-tape-interface-revives-microcassettes-as-storage-medium
Audio Tape Interface Revives Microcassettes As Storage Medium
Zack Nelson decided to go back in time and add a suitably classic storage medium to a retrocomputing project, in the form of a cassette interface. Hackaday reports: The cassette player he had available was a Pearlcorder L400, which uses the smaller microcassette instead of the familiar audio tapes used in your Walkman or boombox. [Zack] designed the entire thing from the ground up: first he decided to use differential Manchester encoding, which provides immunity against common disturbances like speed variations (which cause wow and flutter). The data is encoded in the frequency range from 1 kHz to 2 kHz, which suits the bandwidth of the cassette player. Next, he designed the interface between the computer and the tape recorder; built from an op-amp and a comparator with a handful of discrete components, it filters the incoming signal and clips it to provide a clean digital signal to be read out directly by the computer. The system is demonstrated by hooking it up to an Arduino Nano, which reads out the data stream at about 3000 baud. The noise it makes should bring back memories to anyone brought up with the "PRESS PLAY ON TAPE" message.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/Gigoafev_zA/audio-tape-interface-revives-microcassettes-as-storage-medium
Share this article:
Tweet
View Full Article
Slashdot
Slashdot was originally created in September of 1997 by Rob "CmdrTaco" Malda. Today it is owned by Geeknet, Inc..More About this Source Visit Slashdot