This Audio Spectrum Analyzer Kit looks like too much fun. I remember back in the 90s I had a huge spectrum analyzer with lots of knobs, buttons, levers and dancing LEDs. With the lights down the display was as mesmerizing as a lava lamp. But just like my lava lamp the EQ was phased out. There is lots of technology packed into this kit but unless you can solder surface mount I might stay away from the unassembled kit version!
“With V2.1, I addressed the most important features reported by customers as well as some issues to help during assembly of the boards. Here is a list of changes for V2.1:
- Changed DC Power Jack from TH to SMT.
- Changed input pot from TH to SMT.
- Added new dc-dc converter ST1S10, works on higher frequency.
- Changed all pasives from 1210 to 0805 size.
- Added two bypass capacitors to ATMEGA64.
- Added reset circuit protection to prevent unwanted resets.
- Changed ISP con from simple to locking.
- Removed 100uF cap from ATmega VCC pin.
- Changed audio input con from RCA to surface mount 3.5mm jack.
- Increased clearance size for copper fill to reduce pcb failure rate.
- Redesigned LED Matrix pcb so now its 230mm long instead of 232mm.”