Adobe Portable Document Format - 33.40 kB - 09/13/2019 at 15:05

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Adobe Portable Document Format - 70.13 kB - 09/09/2019 at 18:43

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Adobe Portable Document Format - 44.90 kB - 08/01/2019 at 14:39

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Street Sense Schematic-V08.pdf

Version 8 of Street Sense air and noise pollution sensor unit
- added separate analog supply
- reading ADC using ADC ~DRDY signal and uPy interrupt

Adobe Portable Document Format - 74.90 kB - 05/14/2019 at 16:16

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Adobe Portable Document Format - 69.76 kB - 03/25/2019 at 16:52

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Street Sense Schematic-V05.pdf

Version 5 of Street Sense air and noise pollution unit
- new ADS1219 ADC

Adobe Portable Document Format - 67.74 kB - 03/18/2019 at 16:37

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Street Sense Schematic-V04.pdf

Version 4 of Street Sense air and noise pollution unit

3 changes to reduce noise created by boost converter
- added high side MOSFET switch
- added Schottky diode to USB/Battery select cct
- added capacitor to input of boost converter

Adobe Portable Document Format - 64.26 kB - 03/14/2019 at 23:08

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Street Sense Schematic-V03.pdf

Version 3 of Street Sense air and noise pollution unit

Adobe Portable Document Format - 60.52 kB - 02/13/2019 at 22:21

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traffic_and_wind.wav

10 second audio clip. Testing I2S microphone with new MicroPython I2S module. Sample rate used is 10k samples/second. Wind noise can be heard.

Waveform Audio File Format (WAV) - 195.04 kB - 11/06/2018 at 01:09

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ambulance.wav

10 second audio clip. Testing I2S microphone with new MicroPython I2S module. Sample rate used is 10k samples/second. A passing ambulance can be heard.

Waveform Audio File Format (WAV) - 195.04 kB - 11/06/2018 at 01:09

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