CMA Dishmachines WILAB 002 User manual

WILAB DATA-LOGGER 002
USER’S GUIDE
CENTRE FOR MICROCOMPUTER APPLICATIONS
http://www.cma-science.nl

2 | WiLab User’s Guide
WiLab User’s Guide ver. 1.2, September 2019
Author: Ewa Kedzierska
© CMA, Amsterdam, 2019
CMA
A.J. Ernststraat 169
1083 GT Amsterdam
The Netherlands
[email protected]
https://cma-science.nl
For our international users
Check the CMA website https://cma-science.nl for the latest version of this manual
and updates of Coach programs and apps.
Aan onze Nederlandse gebruikers
WiLab wordt standaard uitgeleverd met Engelse handleiding.
U kunt de laatste versie van de Nederlandse handleiding en de nieuwste updates
van Coach programma’s en app’s downloaden van de CMA-website https://cma-
science.nl.

WiLab User’s Guide | 3
TABLE OF CONTENTS
I. INTRODUCTION 4
1. About WiLab 4
2. Items included with WiLab 4
II. GETTING STARTED 5
1. WiLab overview 5
2. Power button 6
3. Power LED 7
4. Status LED 8
III. WORKING WITH WILAB 8
1. Powering WiLab 8
2. Communication with WiLab 9
2.1. USB 9
2.2. Bluetooth 9
3. Memory 10
3.1. RAM memory 10
3.2. Flash memory 11
4. Sensor inputs 11
4.1. BT analog sensor plug 11
4.2. Sensor detection 12
4.3. Sampling rate 13
5. Controllable Buzzer and LED 13
IV. USING WILAB FOR DATA COLLECTION 13
1. Software requirements 13
2. Connecting WiLab for the first time 14
3. Establishing communication with WiLab 14
4. Typical measurement procedure in Coach 15
5. Working with the controllable Buzzer end LED 16
V. TECHNICAL SPECIFICATIONS 18
1. Key features 18
2. Working conditions and maintenance 18
3. Warranty 19
4. Battery precautions 19
5. Safety Information 19

4 | WiLab User’s Guide
I. INTRODUCTION
1. About WiLab
The CMA WiLab is an easy-to-use data-logger for STEM Education that can be
used for measurement and control. WiLab offers two types of connectivity:
wired via USB cable for computers (Windows and Mac), and Android tablets
(via OTG cable),
wireless via Bluetooth®
1
for tablets (iPad, Android) and Chromebooks.
WiLab is equipped with its own processor and memory, enabling measurements
at high sampling rates of up to 100 000 Hz with accurate independent timing. It
has FLASH memory to allow easy upgrade of the internal software (firmware) and
to store measured data.
For connecting sensors WiLab has two analog BT sensor inputs, which support
CMA sensors. CMA offers a wide range of sensors, which can be connected to
these inputs. Additionally WiLab has two controllable built-in devices, a buzzer
and a LED, which can be used in simple control experiments.
To use WiLab, you need the Coach 7 or Coach 7 Lite program running on your
computer or Coach 7 or Coach 7 Lite app running on your tablet or Chromebook.
2. Items included with WiLab
The following items are included with WiLab:
USB cable for connecting WiLab to a USB port or to the USB power adapter.
USB Power Adapter for powering WiLab and charging its battery.
User’s Guide.
1
Bluetooth® LE 4 and 5

WiLab User’s Guide | 5
II. GETTING STARTED
1. WiLab overview
Power Button
For turning WiLab
on and off
Power LED
for displaying the power
and battery status
Analog (right-handed)
BT Sensor Inputs 1, 2,
for connecting sensors
Micro USB Port
for connecting a USB cable
for charging or
for communication with computer
Status LED
for displaying
the connection status
Controllable LED
for control activities
Controllable Buzzer
built-in
for control activities

6 | WiLab User’s Guide
2. Power button
The small Power button located at the back of WiLab is used to turn it on and off.
To turn WiLab on
Briefly press the Power button.
While WiLab is starting the Power LED blinks red. When the starting procedure
is finished (circa 3 seconds) this LED turns green, blue or red depending on the
battery level.
Now WiLab checks its connection:
-If it detects a USB connection then the Status LED becomes green showing
that WiLab is ready for measurement via USB.
-If it does not detect a USB connection it turns Bluetooth on. The status LED
starts blinking blue (max. 5 minutes) and stops blinking - becomes blue
when Bluetooth communication is established.
After the connection is established you are ready to use WiLab for
measurements.
Connecting WiLab to a USB of a computer or a power supply automatically turns
WiLab on.
To turn WiLab off
Press and hold the Power button for 2 to 5 seconds and release when the
Status LED turns off.
When WiLab is not connected to power and is inactive (no communication, no
measurements) for longer than 15 minutes then it automatically turns off to
save its battery.
If WiLab is connected to a USB of a computer, a tablet or a power supply it will
restart automatically.

WiLab User’s Guide | 7
The detailed operations of the Power button:
WiLab Status
POWER BUTTON
ACTION
OFF
Press briefly
Turns WiLab on
Battery LED starts blinking red and after 3 s it shows
the battery level. Then WiLab checks its connection.
The Status LED indicates the status of connection.
ON
Press briefly
In case of no connection turns Bluetooth on
The Status LED starts blinking blue (max. 5 minutes)
and becomes blue when
Bluetooth communication is established.
ON
Press and hold
for 2-5 seconds
and release when
the Status LED turns off
Turns WiLab off
In case WiLab is powered, WiLab will turn on
automatically
ON
Press and hold for
more
than 8 seconds
WiLab will reset itself
and turn on again.
(Hardware Reset)
OFF
Press 3 times shortly
within 2 seconds
Turns WiLab on and will stay
in Bootloader Mode for 30 s.
WiLab is ready for Firmware update
Battery LED is blinking Red
3. Power LED
The Power LED is located at the rear of the WiLab and indicates power and
battery level.
Power LED
WiLab State
OFF
WiLab is turned off
and not being charged
ON
The LED color depends on the battery level:
Green: battery full
Blue: battery good
Red: battery low
WiLab is turned on
Battery level is between (circa) 80% and 100%
Battery level is between (circa) 20% and 80%
Battery level is less than 20%
and needs to be charged
ON
Blinking Red
WiLab is in Bootloader Mode
and ready for a Firmware Update
During charging WiLab is always on. This is necessary to show the battery level.

8 | WiLab User’s Guide
4. Status LED
The Status LED is located on the top of WiLab and indicates the status of
communication. The table below describes possible states.
STATUS LED
WiLab State
OFF
WiLab is not connected to USB and Bluetooth is turned off
ON
Green
USB communication established
WiLab is ready for data collection
ON
Blinking Blue
Bluetooth is active and advertising itself
ON
Blue
Bluetooth communication established
WiLab is ready for data collection
III. WORKING WITH WILAB
1. Powering WiLab
An internal rechargeable battery (3.6 V, 960 mAh) powers WiLab. The Power LED
indicates the battery level when WiLab is turned on. During charging WiLab is
always on to show the battery level. WiLab is delivered with its battery partially
charged. The device will work as long as the battery provides power or it is
powered via the power adapter. At the moment when the battery level becomes
critical (lower than 20 %) the Power LED turns red. If you continue working
without charging, the device will shut down. A fully discharged battery requires
up to 4 hours of charge time to become fully charged. But within 3 hours the
battery will be charged at least up to 90 %.
To charge battery
Use only the USB cable and USB power adapter delivered with your WiLab.
Connect the USB cable to the micro USB port of WiLab.
Connect the other end of the USB cable to a USB power adapter and plug the
USB power adapter into a standard power outlet.
or
Connect the other end of the USB cable into a free USB port of your computer
or your tablet. Note that the efficiency of charging via a USB port, is limited by
the maximal current provided by a USB socket (500 mA for USB 2.0 and 800
mA for USB 3.0. On tablets the maximum current can be significant lower.

WiLab User’s Guide | 9
Battery life will depend on the sensors and features used but typically you can
expect to use WiLab at least 4 hours (in case of 2 sensors connected) up to 8
hours without recharging it. To save power turn off WiLab when you do not need
it. To prolong battery life, automatic power down turns WiLab off after 15
minutes of inactivity.
The life of the battery is more than 300 full (0 to 100%) charging cycles. If charging
cycle is not full e.g. 30% to 60% it will last more charging cycles. Exposure to
temperature over 35oC will significantly reduce battery life. To replace battery use
only the approved rechargeable batteries provided by CMA.
Notes:
WiLab can be used while the battery is being charged.
WiLab typically consumes about 150 mA. If you connect two sensors then power
consumption can be higher.
When the USB port does not provide enough power, WiLab will not be charged or charging
will be significantly slower.
2. Communication with WiLab
WiLab can communicate with a computer or a tablet:
wired via a USB port for computers (MAC, Windows, tablets with USB port), or
wireless, via Bluetooth (iPad, Android tablet, Chromebooks).
2.1. USB
To use the USB communication use the provided USB cable. Plug one end of the
cable with the micro USB connector into the WiLab and the other end into a USB-
port of a computer or a tablet. In case of tablet you may need a special OTG
adapter cable. The Status LED becomes green when the USB connection has been
established. In case WiLab is connected to the USB port WiLab will always choose
for the USB communication. You need to disconnect WiLab from the USB to be
able to activate Bluetooth.
2.2. Bluetooth
Bluetooth is a short-range wireless communications technology for exchanging
information. WiLab is equipped with Bluetooth Low Energy Insight ISP1507
module, which supports Bluetooth 4 and Bluetooth 5 with compatible devices.
The benefits of Bluetooth 5 are: range, speed, and bandwidth. The wireless range
of Bluetooth 5 maxes out at 120 meters, compared to 30 meters for Bluetooth
v4.2.

10 | WiLab User’s Guide
WiLab identifier
Every WiLab has a unique identifier of
4 characters. This identifier is located
at the bottom of the WiLab.
This identifier allows choosing the
WiLab you want to connect to.
To activate Bluetooth
If needed disconnect WiLab from a USB port. When WiLab is connected to a
USB port then it is not possible to turn Bluetooth on.
After the starting procedure of WiLab is finished or the Power button is
pressed, WiLab ‘’advertises’’ itself as a Bluetooth device to host devices
nearby. This lasts 5 minutes and during this period the Status LED is blinking
blue.
If during this “advertising” period a connection is made by Coach 7 running on
a host device with this WiLab, the wireless communication will be established
and the Status LED will stop blinking and turn blue.
Briefly press the Power button to turn Bluetooth advertising on again for 5
minutes.
3. Memory
3.1. RAM memory
WiLab is equipped with 128 KB of RAM memory to store the collected data. The
maximum number of samples, which can be stored in this memory is 32 000 data
samples. This means than when you use one sensor you will be able to collect
32 000 data points, and when you use two sensors 16 000 data points per
measurement. This applies for frequencies higher than 10 000 Hz. For such
frequencies measurement stops automatically when the memory is full, which
can mean that the measurement is stopped before the measurement time is
reached.
When using USB communication and the sampling frequency is lower than
10 000 Hz there is no sample limit, data are transferred in real-time as long as
data transfer can keep up with data generation. This depends on the used USB.
When using Bluetooth communication and the sampling frequency up to 2000 Hz
for one sensor and 1000 Hz for two sensors there is no samples limit either.
Above those frequencies the 32k samples limit also applies.