Don’t drop me WiFi

Don’t drop me WiFi behaves similarly to Guard me WiFi (just like the original Don’t drop me is similar to Guard me) except for its event (uplink message) is triggered by faster acceleration of the accelerometer in one of its axis and not just movement detection. Drop alert detection threshold can be defined and the mode-specific event are sent with 3 MAC addresses for better localisation precision.

Don't drop me WiFi

Hex value: 0x18

Use cases: Monitoring packages inside trucks, shipping containers and more

Devices that support this mode: SimplePack Plus

Required sensors: Accelerometer, WiFi module

Mode-specific deltas: None

Mode-specific events (uplink messages):

For more information on what uplink messages (mode-independent events) and additional data from various sensors in the device (appended payload) can be sent regardless of mode and how to fine-tune message behavior (alerts), see Mode-independent information and events.

Hex	Event name	Alert	Event information
9A	Drop alert with WiFi 1/2	3	Sent when dropped - high acceleration, sent with 3 MAC addresses
9B	Drop alert with WiFi 2/2	3

Registers relevant for this mode:

If you change the general sensitivity of the accelerometer and the magnetometer (0x11 and 0x19), respective axis registers reset to 0 as the general settings replace them and vice versa.

Hex	Register name	Default value (hex)
0x02	Departure delay	15 seconds (0x0F)
0x03	Arrival delay	10 minutes (0x4A)
0x04	Sleep time	1 minute (0x41)
0x05	Tracing interval	10 minutes (0x4A)
0x11	Accelerometer sensitivity	7 (0x07)
0x12	Accelerometer X axis sensitivity	7 (0x07)
0x13	Accelerometer Y axis sensitivity	7 (0x07)
0x14	Accelerometer Z axis sensitivity	7 (0x07)
0x15	Drop me threshold	936 mG (0x60)
0x16	Drop me duration	200 ms (0x02)
0x17	Drop me axis configuration	7 (0x07)
0x3C	Accelerometer measurement period	1 second (0x01)
0x49	Accelerometer detection delay	0 seconds (0x00)

Similar modes:

Hex	Mode name	Description
0x07	Don’t drop me	Original version of Don’t drop me, no WiFi
0x33	Don’t drop me Wifi Atlas	WiFi Atlas version of Don’t drop me
0x54	Don’t drop me Wifi Precise	WiFi Precise version of Don’t drop me

Switching to mode, arming and disarming information:

Follow the Basic Operations With SimpleHw Devices guide, where you can also find information about LED behavior, relevant Sigfox messages and more.

Here’s what’s important for Don’t drop me WiFi messages:

• To set this mode, the downlink needs to include this mode register setting: 0118

• The uplink messages need to begin with the mode hex as the first byte: 18

• When arming the device, you should see this message: 1810

• When the device is armed, it should send you these two bytes: 1811

• If you disarm the device via long press, you should receive this message: 1814