Technical Information
Pin-out
| Pin | Function |
|---|---|
WE0 |
Main Working Electrode / WE1 |
WE1 |
Second Working Electrode / WE2 |
CE |
Counter Electrode |
RE |
Reference Electrode |
AUX |
Reserved (see note) |
GND |
Analog Ground |
|
The AUX pin is connected to an internal NTC temperature sensor by default. In case this pin is required to make a connection to an external signal the following specifications are valid for the pin:
Please note that this requires an in-factory modification. In the default hardware configuration this pin should be regarded as “reserved”. |
Supported measurements
LSV, CV, DPV, SWV, NPV, CA, CC, MA, PAD, OCP, EIS, IMPE, Fixed potential, IMPT, MM
Supported variable types for meas command
| Description | ID | Name |
|---|---|---|
WE voltage vs RE |
ab |
VT_POTENTIAL |
CE voltage vs GND |
ac |
VT_POTENTIAL_CE |
RE voltage vs GND |
ae |
VT_POTENTIAL_RE |
WE voltage vs CE |
ag |
VT_POTENTIAL_WE_VS_CE |
Analog voltage vs GND |
VT_POTENTIAL_AIN1 |
|
WE current |
ba |
VT_CURRENT |
Capabilities
Low speed mode properties
| Parameter | Min. Value | Max. Value |
|---|---|---|
Bandwidth |
0.016 Hz |
100 Hz |
Potential range |
-1.25 V |
2.0 V |
Dynamic potential window |
2.2 V |
2.2 V |
High speed mode properties
| Parameter | Min. Value | Max. Value |
|---|---|---|
Bandwidth |
0.016 Hz |
200 kHz |
Potential range |
-1.7 V |
2.0 V |
Dynamic potential window |
1.214 V |
1.214 V |
Max range mode properties
| Parameter | Min. Value | Max. Value |
|---|---|---|
Bandwidth |
0.016 Hz |
100 Hz |
Potential range |
-1.7 V |
2.0 V |
Dynamic potential window |
2.6 V |
2.6 V |
LED indicator
Default States
| Blue LED | |
|---|---|
Warning |
blink 4Hz |
Idle |
blink 0.5Hz |
Script running |
solid on |
Off or hibernating |
solid off |
In bootloader |
blink 2 Hz |
| Orange LED | |
|---|---|
Charging |
blink slow 0.8Hz |
Charging issue |
blink fast 6 Hz |
>90% charged |
Solid on |
Battery charge OK |
solid off |
Battery low |
short pulse every 4s |
The behaviour of the blue LED can be configured via MethodSCRIPT with the notify_led command.
NM_IDLE |
blink 0.5 Hz |
NM_PASS |
pulse 900 ms on, 100 ms off |
NM_BUSY |
solid on |
NM_NOTICE |
pulse 100 ms on, 400 ms off |
NM_FAIL |
blink 4 Hz |
NM_WARN |
blink 4 Hz |
NM_ERROR |
blink 4 Hz |
Power consumption
-
when off: 0.1 mW (75 days)
-
when idle or measuring: 92 mW (2 hours)
-
sleep with Bluetooth com.: 1 mW (7.5 days)
-
sleep without Bluetooth com.: 0.3 mW (25 days)
-
sleep with 10 mV bias potential applied on WE1: 4.44 mW (40 hours)
-
charging USB-C or wireless ~2 hours for a full charge
Bluetooth LE bandwidth limitations
The maximum speed for transmitting measurement data by the Sensit Wearable is limited to 100 datapoints per second when using Bluetooth Low Energy. This limitation only applies when Bluetooth LE is used with PStouch or PSTrace for doing measurements directly on the Sensit Wearable and the data is sent during the measurement.