X4F103 Shield brief#
Hardware information about the NOVELDA X4F103 Shield can be downloaded from this page. The product description includes:
Hardware description
Dimensions
Schematics
Bill of Material (BOM)
Pin connections on nRF52840DK
Introduction#
his document describes the Novelda X4F103 Shield. The X4F103 Shield is designed to work with the Nordic nRF52840DK development kit, but will electrically fit all development kits following the Arduino pin-out standard. The X4F103 Shield allows the user to evaluate the performance of the Novelda X4F103 sensor and to develop own projects using the Novelda X4 Proximity and Occupancy sensor products.
More information such as:
The X4 Sensor Driver Library
and more
is available on this webpage.
Warning
The maximum supply voltage of the X4F103 is 3.6 V. Higher voltages may lead to permanent device damage.
Overview#
The picture below shows the NOVELDA X4F103 Shield with the X4F103 sensor mounted in the center of the shield. The dimensions of the board is also given in the figure.
X4F103 Shield with dimensions#
- For power/current measurements:
Measure the voltage over R1
Remove R1 to measure current over VIN and VDD (P1).
For debugging and signal analysis, use the accessible debug pin holes located at the bottom of the shield, giving access to all of the signal channels.
Unlabeled pins are unconnected
Schematics#
X4F103 schemantics#
Bill of materials#
The following table shows the BOM for the X4F103 Shield
Component |
Description |
Value |
Comment |
|---|---|---|---|
R1 |
0402, 1%, 125 mW |
0.43 ohm |
For current measurments |
R2 + R3 |
0402, 1%, 63 mW |
2.2 k ohm |
Pull-up resistors for I2C lines. |
U1 |
64KX8, Serial, CMOS, PDSO8 |
EEPROM programmed with information about the sensor module and the adapter board |
|
C1 |
0402, 10V, 10%, X5R |
10 nF |
EEPROM decoupling. |
M1 |
NOVELDA X4F103 |
Novelda UWB Sensor. |
Pin connections on nRF52840DK#
Pin X4F103 Shield |
Pin Nordic nRF52840DK |
Description |
|---|---|---|
VIN |
VDD |
Positive voltage supply |
GND |
GND |
Ground |
SCL |
P0.27 |
I2C clock |
SDA |
P0.26 |
I2C data |
SCLK |
P1.15 |
SPI clock |
POCI |
P1.14 |
SPI, peripheral out / controller in |
PICO |
P1.13 |
SPI, peripheral out / controller out |
CS0 |
P1.12 |
SPI Chip Select |
EN |
P1.11 |
Enable, active high |
IRQ |
P1.10 |
Interrupt |
GPIO3 |
P1.08 |
Not in use. For potential future use. |
The X4F103 Shield mounted on a Nordic nRF52840DK#