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| + | [* black] Now use your solder iron for changing velocity of the pads. |
|---|---|
| + | [* black] To inscrease velocity of four pads group you need to change the BIAS resistor near the operation amplifier (LMV324M) IC. |
| + | [* black] The higher resistor you will take - more sensivity you will get. The default resistor is 27K so you have to take replacement HIGHER than this value. For my pads it worked at 100K and 56K (because there's a difference on sensivity). |
| + | [* black] The amplification coefficient equals (1 + R2/R1). Default R2 = 27K and R1 = 10K so it equals 3.7. If you're using 100K resistor it equals 11. |
| + | [* black] (If you'll remove this resistor, then sensivity will increase very high so it will react even if you're clap near the sensors, so choose it reasonably). |
| + | [* black] To change sensivity on generic pad you have to solder the little capacitor between reference line and output line of this pad. The capacity must be relativly high. At my pads it worked at 68n-100n. Lower capacity will not work, higher will cause phantom clicking. |
| + | [* black] That all! Now you can assemble it and test. |
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