| ??? 12/23/10 20:22 Read: times Msg Score: +1 +1 Good Answer/Helpful |
#180263 - Really need ADC? Responding to: ???'s previous message |
Hi Guy!
If you want to issue a MIDI command each time the piezo is hit, a level comparator should be enought. But if you want different commands according to the hit force, then and ADC could be necessary. To maximize piezo voltage, load impedance must be high (1 Meg or more). Piezo transducers behave like a voltage source in serie with a very small capacitance. Daniel |
| Topic | Author | Date |
| measuring piezo voltage | 01/01/70 00:00 | |
| Oscilloscope | 01/01/70 00:00 | |
| you ned to read up on ... | 01/01/70 00:00 | |
| piezo sensing | 01/01/70 00:00 | |
| Careful with resolution or strength will feel "random" | 01/01/70 00:00 | |
| Really need ADC? | 01/01/70 00:00 | |
| source impedance | 01/01/70 00:00 | |
| Once digital? | 01/01/70 00:00 | |
| Piezo signals high dynamic range | 01/01/70 00:00 | |
| not 8051 specific? | 01/01/70 00:00 | |
| Some Reference Materials | 01/01/70 00:00 | |
| reference materials | 01/01/70 00:00 | |
| Two comments | 01/01/70 00:00 | |
| one comment on a comment | 01/01/70 00:00 | |
| made good progress | 01/01/70 00:00 | |
| not necessarily a good idea | 01/01/70 00:00 | |
zener | 01/01/70 00:00 | |
| one important thing | 01/01/70 00:00 |