EEVblog #377 - Mailbag Monday

Dave opens his mail.
The EEVblog Lab Temperature & Humidity in real-time:

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Donations:
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Electronics Info Wiki:

[ksphysicist]

I wonder if the filter you discarded from the front of the sensor board might have prevented ambient light from overwhelming the sensor.

[rgorazd]

From 1.st to 6th of october it's a Fire security week here in Slovenia. With this stamp, you contribute 0.15€ for the Fire Association of Slovenia.
RGDS

[dhpbear]

7:50 - I'm guessing you're getting LOTS of light leakage, it being out of the package!

[morgothegreat]

Glad you love Canada Dave, we love you too!

[gamccoy]

I think that was the best mailbag in a while. I am pretty impressed with the speed at which the temp/humidity logger was setup.

[buddhaman]

They still have your poscope hosted with your last temp and humidity. WE DEMAND TEMP UPDATES!!!!

[bambiertje]

It's no wonder the IR-sensor of the toilet-flush-thing isn't working like that, when you removed the housing you also removed a little opaque black plate that fitted around the LED's. Without this plate, the IR sensor is in direct line-of-sight with the IR LED's. That will certainly create a false signal.

[chemtype]

In the future, a handy trick for testing infrared LED's is to use a cell phone with a built in camera, just use the viewfinder to look at the LED's, and you should see the bright light being emitted. Its also useful for testing remote controls and even observing the pulse signaling use by IT transceivers.

[hotrex]

You may find that the flush counts the number users and flushes after so many uses or after a time out after being used once

[timtolar]

hi i am from slovenia and the fire extinguish is a day of fighters in slovenia

[toxanbi]

06:07 — Dave, are you sure it measures distance by time period? In my opinion it's most likely uses intensity of reflected light, not a time delay.

[Skyfox]

I have one of those eTrex Legends! It's a very handy little GPS unit. One time when flying and the aviation-specific GPS in the plane with the external antenna kept losing the satellite signal, I got out my Legend and put it up on the dash board, and used it to fly lines of longitude more accurately (down to 5 decimal places of longitude) than I was with the big expensive piece of junk. I also have a handlebar mount to carry it on my motorcycle, and can use it to stream the GPS data to the laptop so I can run a moving map for road trips. I even stuck it inside a model airplane with track logging turned on so I could upload the entire 3D flight into Google Earth.

The only thing I don't like about it is that it has only 8MB of on-board memory and has no expansion slot for a micro SD card like some of the other eTrex units. Oh, and the data transfer over the 9-pin serial cable is painfully slow when loading map segments onto it.

[PIXscotland]

I bought a stack of cables from him a few years ago.
Worked well, although fragile in design.

[KumarChalla]

@EEVblog

For the flushing thing, may be you need to cover the direct path from the IR LEDs to the recieving LED with the provided plastic shroud (visible at 5:31)?

Worth a try may be?

[elvishfiend]

I'm sure he would have, had he known it was an electronics issue. for all he knew, it could have been a wiring fault or a plumbing/coolant issue. australia has pretty strict laws about fiddling with stuff that you aren't licensed to fiddle with.

[envisionelec]

Actually, it was a pretty good representation of a Southern accent. ;)

Please do an entire video of you trying to use the American accent. I could use a laugh.

[Psi]

The temp sensor may just have taken a little while to auto-compensate for self heating.
That maybe why it was a bit out at first.

[chaos.corner]

I still have one of those connectors in my parts box (I bought two). It was great for uploading geocache waypoints. The official Garmin cable was way overpriced (of course).

[MrDemitrieus]

"every monday is like christmas time" - the only man who ever said that

[JerryBiehler]

I use the older version of this pokeys (the 55) to control the front panel of my cnc lathe. It allowed me to use the original keyboard with it's keyboard scanning feature. Works pretty well.