56 October 2017
humidity, barometric pressure,
and TVOC [Total Volatile
Organic Compounds]) are
located on the left side of
Look back at Screenshot
3. The TVOC value is under
what seems to be a leaf
figure. You’ll note that under
the temperature reading there
is a small cloud labeled CO2.
The reading of 400 PPM is
provided by the gas sensor
you see in Photo 2.
At the time, my Thingy
was rubber side up on a table,
Another Thingy talent is sound processing, which is
supported by the microphone at the top center of the
PCB. The nRF52832 — which houses the Bluetooth radio
and an ARM microcontroller — is mounted within the
This side of the Thingy’s PCB is directly under the
rubber cover. That allows the user to access the
pushbutton by simply pressing on that rubber cover.
If you desire to monitor the Thingy’s vitals, all of the
test points are located on this side of the PCB. You can
also tap into the I2C bus and some of the nRF52832’s I/O
pins. The NFC (Near Field Communication) antenna is
partially shown in the lower right of Photo 3. The NFC
antenna is folded under the rubber cover.
The Thingy is a nifty Io T device that seems to have no
dependence on anything external to itself. However, to be
■ PHOTO 3. Not much to talk about here as far as
components are concerned. The pushbutton and
radio/microcontroller are mounted on this side of the
■ PHOTO 2. This is a shot of the bottom of the Thingy PCB. Every sensor known to man
(plus the kitchen sink) is mounted here.
■ SCREENSHOT 6. This is fun stuff! However, remember
that this is all being done via a Bluetooth connection, and
the code to make this happen is available for you to study.