I have the strange feeling that they might actually (close to) be the same as the Extech SDL series.
Alghough the buttons are placed differently, the rest looks pretty similiar.
This looks like a very interesting meter, it can record 2000 data points with a selectable interval, and its cheap, so it might be useful.
It has bluetooth and usb (for retrieving only probably)
I’ve added a short post with a bit of information about what I ended up doing. It works great for me, and I’ll keep working on it to clean it up if there’s interest.
Thanks bmengineer! It’s pretty basic but it’s great having immediate visual feedback. It also displays the IP address at start up (despite using a reserved IP) and diagnostics in case any sensors aren’t detected.
Instead of using an app or a batch script to log the readings, the ESP8266 itself is hosting a webpage that you pull up. That way you can use your phone, a tablet, or a computer to perform tests. And instead of polling data at set intervals, this keeps an open socket connection that quickly pushes new data any time there’s a sufficient change in the data. Oh, and I added a real-time graph.
Strange that there aren’t more manufacturers which incorporate this, and still work with relative ancient technology which are way overpriced
I actually built your specific project and it works amazing !
And the best part of it is that the parts are dirt cheap! (ok, it lacks a nice housing etc, but even that can be arranged for a few dollars more)
Awesome! Glad you got it up and going. It’s one thing for me to put one together (as I debug and such). It’s entirely better to see someone else successfully replicate it.
This is a great post, so I’m dredging it up to see if there are any new logging light meters (or better apps) out there.
I find myself getting closer to choosing the light I will use in certain scenarios and want to be able to do long tests (instead of using the lights for a long time and guessing which is better).
I haven’t heard of anything else new lately, but if you run across anything, please share! Or if you decide to put something together based on my project, let me know if you have any questions.
It’s difficult to say… largely depends on your technical prowess, not so much electronics. Have you ever messed with anything Arduino based or the like?