Arduino AI content / demos
This is a temporary website linking some of the demos and tools we build to support the creation of AI/ML applications on the Arduino platform.
Get started with machine learning on Arduino
Fruit identification using Arduino and TensorFlow
Use the dashboard using the Arduino Nicla Sense ME
BLE Sense Demo - Arduino sketch
BLE Sense Demo - Web Dashboard (Chrome only)
Nicla Sense ME BLE Demo - Arduino sketch
Nicla Sense ME BLE - Web Dashboard (Chrome only)
Hi! 👋
When I try to compile the sketch using the Arduino IDE available from the latest Microsoft Store , then I get this error -
Arduino: 1.8.13 (Windows Store 1.8.42.0) (Windows 10), Board: "Arduino Nano 33 BLE"
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash\ble_sense_webdash.ino: In function 'void loop()':
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash\ble_sense_webdash.ino:146:44: warning: narrowing conversion of 'r' from 'int' to 'short unsigned int' inside { } [-Wnarrowing]
unsigned short colors[3] = { r, g, b };
^
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash\ble_sense_webdash.ino:146:44: warning: narrowing conversion of 'g' from 'int' to 'short unsigned int' inside { } [-Wnarrowing]
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash\ble_sense_webdash.ino:146:44: warning: narrowing conversion of 'b' from 'int' to 'short unsigned int' inside { } [-Wnarrowing]
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash\ble_sense_webdash.ino:194:13: warning: unused variable 'micLevel' [-Wunused-variable]
short micLevel;
^~~~~~~~
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\libraries\Wire\Wire.cpp: In member function 'void arduino::MbedI2C::receiveThd()':
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\libraries\Wire\Wire.cpp:142:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (c <= sizeof(buf)) {
~~^~~~~~~~~~
In file included from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\variants\ARDUINO_NANO33BLE/pins_arduino.h:3:0,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/Arduino.h:90,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\libraries\PDM\src/PDM.h:22,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\libraries\PDM\src\nrf52\PDM.cpp:23:
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\libraries\PDM\src\nrf52\PDM.cpp: In member function 'int PDMClass::begin(int, long int)':
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/macros.h:28:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define digitalPinToPinName(P) (P >= PINS_COUNT ? NC : g_APinDescription[P].name)
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/macros.h:28:40: note: in definition of macro 'digitalPinToPinName'
#define digitalPinToPinName(P) (P >= PINS_COUNT ? NC : g_APinDescription[P].name)
^~
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/macros.h:28:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define digitalPinToPinName(P) (P >= PINS_COUNT ? NC : g_APinDescription[P].name)
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/macros.h:28:40: note: in definition of macro 'digitalPinToPinName'
#define digitalPinToPinName(P) (P >= PINS_COUNT ? NC : g_APinDescription[P].name)
^~
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp: In member function 'int HCIClass::sendAclPkt(uint16_t, uint8_t, uint8_t, void*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:430:41: warning: variable length array 'txBuffer' is used [-Wvla]
uint8_t txBuffer[sizeof(aclHdr) + plen];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'bool ATTClass::handleNotify(uint16_t, const uint8_t*, int)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:522:39: warning: variable length array 'notification' is used [-Wvla]
uint8_t notification[_peers[i].mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'bool ATTClass::handleInd(uint16_t, const uint8_t*, int)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:552:37: warning: variable length array 'indication' is used [-Wvla]
uint8_t indication[_peers[i].mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp: In member function 'int HCIClass::sendCommand(uint16_t, uint8_t, void*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:472:41: warning: variable length array 'txBuffer' is used [-Wvla]
uint8_t txBuffer[sizeof(pktHdr) + plen];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::findInfoReq(uint16_t, uint16_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:675:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::findByTypeReq(uint16_t, uint16_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:766:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::readByGroupReq(uint16_t, uint16_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:816:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::readOrReadBlobReq(uint16_t, uint16_t, uint8_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:918:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::readByTypeReq(uint16_t, uint16_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1023:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::writeReqOrCmd(uint16_t, uint16_t, uint8_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1223:25: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::prepWriteReq(uint16_t, uint16_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1309:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'void ATTClass::execWriteReq(uint16_t, uint16_t, uint8_t, uint8_t*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1342:23: warning: variable length array 'response' is used [-Wvla]
uint8_t response[mtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'bool ATTClass::exchangeMtu(uint16_t)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1424:33: warning: variable length array 'responseBuffer' is used [-Wvla]
uint8_t responseBuffer[_maxMtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'bool ATTClass::discoverServices(uint16_t, BLERemoteDevice*, const char*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1438:33: warning: variable length array 'responseBuffer' is used [-Wvla]
uint8_t responseBuffer[_maxMtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'bool ATTClass::discoverCharacteristics(uint16_t, BLERemoteDevice*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1494:33: warning: variable length array 'responseBuffer' is used [-Wvla]
uint8_t responseBuffer[_maxMtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp: In member function 'bool ATTClass::discoverDescriptors(uint16_t, BLERemoteDevice*)':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\ATT.cpp:1551:33: warning: variable length array 'responseBuffer' is used [-Wvla]
uint8_t responseBuffer[_maxMtu];
^
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp: In function 'void bleLoop()':
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp:116:68: warning: 'us_timestamp_t mbed::TimerBase::read_high_resolution_us() const' is deprecated: Use the Chrono-based elapsed_time method. If integer microseconds are needed, you can use `elapsed_time().count()` [since mbed-os-6.0.0] [-Wdeprecated-declarations]
last_update_us += (uint64_t) timer.read_high_resolution_us();
^
In file included from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/mbed.h:81:0,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed.h:14,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/features/FEATURE_BLE/targets/TARGET_CORDIO/driver/CordioHCIDriver.h:26,
from C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp:23:
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/drivers/Timer.h:104:20: note: declared here
us_timestamp_t read_high_resolution_us() const;
^~~~~~~~~~~~~~~~~~~~~~~
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp:138:72: warning: 'us_timestamp_t mbed::TimerBase::read_high_resolution_us() const' is deprecated: Use the Chrono-based elapsed_time method. If integer microseconds are needed, you can use `elapsed_time().count()` [since mbed-os-6.0.0] [-Wdeprecated-declarations]
uint64_t time_spent = (uint64_t) timer.read_high_resolution_us();
^
In file included from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/mbed.h:81:0,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed.h:14,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/features/FEATURE_BLE/targets/TARGET_CORDIO/driver/CordioHCIDriver.h:26,
from C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp:23:
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/drivers/Timer.h:104:20: note: declared here
us_timestamp_t read_high_resolution_us() const;
^~~~~~~~~~~~~~~~~~~~~~~
C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp:149:55: warning: 'void rtos::ThisThread::sleep_for(uint32_t)' is deprecated: Pass a chrono duration, not an integer millisecond count. For example use `5s` rather than `5000`. [since mbed-os-6.0.0] [-Wdeprecated-declarations]
rtos::ThisThread::sleep_for(wait_time_ms);
^
In file included from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/rtos/rtos.h:30:0,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/USB/PluggableUSBSerial.h:24,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/Arduino.h:131,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed.h:4,
from C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/features/FEATURE_BLE/targets/TARGET_CORDIO/driver/CordioHCIDriver.h:26,
from C:\Users\ARIJIT DAS\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCICordioTransport.cpp:23:
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino/mbed/rtos/ThisThread.h:216:6: note: declared here
void sleep_for(uint32_t millisec);
^~~~~~~~~
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino\USB\USBCDC.cpp: In member function 'virtual const uint8_t* arduino::USBCDC::configuration_desc(uint8_t)':
C:\Users\ARIJIT DAS\Documents\ArduinoData\packages\arduino\hardware\mbed\1.3.0\cores\arduino\USB\USBCDC.cpp:544:35: warning: narrowing conversion of '((((arduino::USBCDC*)this)->arduino::USBCDC::extraDescriptor != 0) ? 5 : 0)' from 'int' to 'uint8_t {aka unsigned char}' inside { } [-Wnarrowing]
(extraDescriptor != NULL) ? 0x5 : 0x0, // iInterface
~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
sketch\ble_sense_webdash.ino.cpp.o: In function `loop':
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash/ble_sense_webdash.ino:200: undefined reference to `arm_rfft_init_q15'
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash/ble_sense_webdash.ino:201: undefined reference to `arm_rfft_q15'
C:\Users\ARIJIT DAS\Documents\Arduino\ble_sense_webdash/ble_sense_webdash.ino:202: undefined reference to `arm_abs_q15'
collect2.exe: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino Nano 33 BLE.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Can anyone help ?
When I try to compile this it can't linke arm_rfft_init_q15. How do I add that to nano BLE sketch / toolchain?
Is there any chanc to implementate the moment of the 3d nano model in every direction? Not only up and down and left to right? Because it seems that the yaw is missing
Hello,
At the suggestion of @sandeepmistry I am transferring this issue to this site. The Nano 33 BLE Sense board is working with basic sensor test exercises (via BLE) with the Ubuntu 19.10 desktop client Arduino IDE. Unfortunately, the demo posted earlier this week does not work with a fresh install of Chrome as described below:
My steps are:
Rushed to practice the suggestion posted at https://twitter.com/arduino/status/1201957810084483074
Compiled sketch (without any change) under desktop IDE after installing one missing library
Uploaded sketch to Nano33 BLE board
Launched Google Chrome (Version 78.0.3904.108 (Official Build) (64-bit)) under Ubuntu 19.10 (desktop) and received error message:
arduino.github.io says
Error: This browser doesn't support Web Bluetooth. Try using Chrome.
OK.
I receive the same error when building using the Arduino Cloud IDE.
Please provide some suggestion on correcting my mistake with any recommended workaround. I am a beginner in these matters. I can post or redirect this inquiry elsewhere upon suggestion.
Kind regards.
The values for the gas sensor and air quality are not displayed on the Nicla Sense ME dashboard and are always zero.
I am following this tutorial on the docs website: https://docs.arduino.cc/tutorials/nicla-sense-me/web-ble-dashboard
NiclaSenseME.ino sketchOutput windowSketch uses 313028 bytes (59%) of program storage space. Maximum is 527616 bytes.
Global variables use 39600 bytes (61%) of dynamic memory, leaving 24688 bytes for local variables. Maximum is 64288 bytes.
"C:\Users\user\AppData\Local\Arduino15\packages\arduino\tools\openocd\0.11.0-arduino2/bin/openocd.exe" -d2 -s "C:\Users\user\AppData\Local\Arduino15\packages\arduino\tools\openocd\0.11.0-arduino2/share/openocd/scripts/" -f interface/cmsis-dap.cfg -c "transport select swd; adapter speed 1000" -f target/nrf52.cfg -c "telnet_port disabled; init; reset init; halt; adapter speed 10000; program {C:\Users\user\AppData\Local\Temp\arduino\sketches\5B5C76D81A5136F18ABEB99A48521561/NiclaSenseME.ino.elf}; reset run; shutdown"
Open On-Chip Debugger 0.11.0+dev-gab95bac57-dirty (2021-05-11-10:45)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
debug_level: 2
adapter speed: 1000 kHz
Info : CMSIS-DAP: SWD Supported
Info : CMSIS-DAP: FW Version = v1.0
Info : CMSIS-DAP: Serial# = 401D6526
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 0 TDO = 0 nTRST = 0 nRESET = 1
Info : CMSIS-DAP: Interface ready
Info : clock speed 1000 kHz
Info : SWD DPIDR 0x2ba01477
Info : nrf52.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : starting gdb server for nrf52.cpu on 3333
Info : Listening on port 3333 for gdb connections
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x00006dc4 msp: 0x20010000
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x00006dc4 msp: 0x20010000
** Programming Started **
Info : nRF52832-CIAA(build code: E0) 512kB Flash, 64kB RAM
Info : Padding image section 0 at 0x0005b854 with 4 bytes
Warn : Adding extra erase range, 0x0005c6d0 .. 0x0005cfff
** Programming Finished **
shutdown command invoked
The value for the Indoor Air Quality and CO2 is non-zero
2.0.4
Windows 10
Hey Guys,
do you know how to get this dashboard work on Windows/Chrome.
When i press the button " Click button to connect to the board" is see my Arduino device but when i press the pair button i get an error and it wont pair.
Best regards
I tried to compile sketch NiclaSenseME.ino from https://github.com/arduino/ArduinoAI/tree/main/NiclaSenseME-dashboard/NiclaSenseME using
but I got the following error:
In the index.html the uuid of the magnetometer is incorrect. It should be:
uuid: '6fbe1da7-3003-44de-92c4-bb6e04fb0212'
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