I thought it would be cool if the music search LEDs on my M70 would be VU meters. I put yellow LEDs behind the original reds, allowing me to retain MMS. The circuit was designed from scratch on a breadboard and transferred to a project board. Here's a link to the project info, with schematic on page 2. Also, some videos from its development:
boomboxery.com/forum/index.php...
• LEDtest 1080p
• JVC M70 LED VU Meter T...
• LED test #4
• M70 LED Test #5
17 янв 2015