I get this error when i try running the code from the Eco watch project
Restarting in bootloader mode
Flashing with command:/Users/cecicatanzano/.arduino-create/arduino/bossac/1.9.1-arduino5/bossac -d --port=cu.usbmodem34B7DA6305682 -U -e -w /var/folders/vl/f533m_m56yd14wt1_gtnjnqh0000gn/T/arduino-create-agent1368905020/Eco_Watch_nov21b.bin -R
No device found on cu.usbmodem34B7DA6305682
Set binary mode
Send auto-baud
Set binary mode
Executing command: exit status 1
According to the error the device is not found, or the port is occupied, so maybe try:
to make sure the board is properly connected the led is on.
If the Arduino IDE is open, close it.
Give a quick double tap to the reset buttons on the board to set it in bootloader mode. This will "help" the port on the board accept a new program (after the quick double tap you will see the L led (orange one) fading in and out), then try to upload again.