Kecheng KC-330B
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 | |
| Status | in progress |
|---|---|
| Connectivity | USB |
| Measurement range (A) | 30dB - 130dB |
| Resolution | 0.1dB |
| Accuracy (94dB@1kHz) | 1.5dB |
| Frequency weighting | A, C |
| Time weighting | F, S |
The Kecheng KC-330B is a sound level meter and data logger with USB connectivity.
See Kecheng KC-330B/Info for more details (such as lsusb -vvv output) about the device.
Hardware
- Silicon Labs F320 8-bit MCU with USB interface
- 2 X SG Micro SGM8522 dual rail-to-rail op-amp, SGM8524 quad rail-to-rail op-amp
- Microchip 24LC512 64KB EEPROM
- Texas Instruments CD4053M triple 2-channel multiplexer
Photos
Back of the device
PCB, top
PCB, bottom
PCB with LCD removed
SGM8522/SGM8524
Silicon Labs F320
