, MSGEQ7 and atmega32 based Audio Spectrum.
10 level height and 10 band width.
peak hold and fall down display style
Step 1: Components list
components list
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1, atmega32 – 1
2, MSGEQ7 Audio spectrum ic -1
3, veroboard – 1
4, RED Bar graph LED -10
5, 20 pin ic base – 10
6, BC557 -10
7,Resistors – 330Ω -10
– 8.2KΩ -1
– 200kΩ -1
– 22k Ω -2
– 10k Ω -1
8, ULN2803 ic – 2
9, 7805 5V regulator ic -1
10, crystal – 16Mhz -1
11,Capacitors- 22pf-3, 0.01uF -1, 0.1uF – 2
12, single-strand wire
Step 2: Circuit diagram / Wiring diagram
complete circuit diagramFor more detail: 100 LED 10 band Audio Spectrum atmega32 MSGEQ7 with peak hold and fall down
