Author Archives: A.J.

Around August of last year, the time-series database I was using, TempoIQ, announced that they were not offering their data ingestion and storage plans any more. During the 2 week grace period until their server-shutdown, I looked through other alternatives … Continue reading →

This past weekend I decided to test the latest model of the PICKLE—with the Plantower 5003 and the Particle Electron—by lighting an incense stick near the monitor. As you can tell, the PM2.5 levels jump from roughly 3.0 to about … Continue reading →

I thought I’d learn Fritzing and post the circuit diagram of the modified Shinyei PPD42NS. The circuit is really quite simple. In the 42R, the Shinyei is connected to the Particle Photon which is a microcontroller with built-in Wifi and … Continue reading →

It’s been a while and school intervened and I did not get to post to the blog. Since then there have been a bunch of questions and so first I want to show a few more Pickle Jr. PM Monitors … Continue reading →

In the previous post I talked about how I built Pickle Jr – which is my name for the networked air pollution monitor that comprises the Shinyei PPD42 with a small Sunon fan fused to the 42. I first built the … Continue reading →

The last monitor I built, the Pickle was based on the PPD60PV-T2. It was super cool to see that adding the fan fused to the T2 would improve the performance so much that it worked pretty close to the AES-1 from Shinyei. However, … Continue reading →

The monitor I built to calibrate the Shinyei vs the PM2.5 AES-1, I called Pickle. Why the name Pickle ? Because I love crunchy pickles and I thought it would be a cool name. Can also stand for: Particle Counter in … Continue reading →