Search found 5 matches

by kreid4
Wed Nov 30, 2022 5:20 pm
Forum: Pre-Sales Advice
Topic: Advice on PWM output from particle sensors
Replies: 8
Views: 4197

Re: Advice on PWM output from particle sensors

Gerry Thank you very much indeed for your very useful and comprehensive information and help. It looks like the 2207B MSO might be the best option. I am also checking the availability of 2205a MSO from the link below. https://www.sjelectronics.co.uk/picoscope-2205a-mso-mixed-signal-oscill...
by kreid4
Sat Nov 26, 2022 9:50 am
Forum: Pre-Sales Advice
Topic: Advice on PWM output from particle sensors
Replies: 8
Views: 4197

Re: Advice on PWM output from particle sensors

Gerry, thank you for you reply. There does not seem to be much more information available other than the Datasheet. The air monitors sample the air 5 times at ~1 second intervals (ie ~ 5 seconds total ). It then waits for 175 seconds and repeats this 24/7. I wish to monitor both the PWM pins and UAR...
by kreid4
Fri Nov 25, 2022 8:52 am
Forum: Pre-Sales Advice
Topic: Advice on PWM output from particle sensors
Replies: 8
Views: 4197

Re: Advice on PWM output from particle sensors

No. Pin Name Function 1 NC No connection/Not used 2 1μm Range of PM2.5 value (0-999μg /m³) and provide output in PWM form on this pin 3 5V Connect 5V to this pin to power dust sensor 4 2.5μm Range of PM10 value (0-999μg /m³) and provide output in PWM form on this pin 5 GND Connect to ground terminal...
by kreid4
Thu Nov 24, 2022 10:34 am
Forum: Pre-Sales Advice
Topic: Advice on PWM output from particle sensors
Replies: 8
Views: 4197

Advice on PWM output from particle sensors

Hello I am new here. We are setting up a small network of air quality particle sensors. We are using SDS011 particle sensors connected to an ESP8266 node CPU/WLAN and a BME280 6 pin (temperature/humidity/pressure) sensor. Please see links below. I am interested in observing/recording/analysing the P...