UM1975
Board schematic
and bill of materials
DocID028608 Rev 1
15/20
4
Board schematic and bill of materials
4.1
STM32 Nucleo connections
The X-NUCLEO-IDW01M1 expansion board is designed to be plugged directly on the
STM32 Nucleo board connectors. The X-NUCLEO-IDW01M1 is configured by default to be
compatible with the highest number of STM32 Nucleo boards possible. It may be also be
configured, via resistor placement, to use different I/O configurations in order to match
specific customer targets. Refer to the X-NUCLEO-IDW01M1 user manual for more
detailed information regarding the possible I/O configuration options.
Check to see if resistor R21 is present; if it is, please remove it as it may interfere with
JTAG debug.
4.2
Bill of materials
Table 10: Bill of materials (1 of 2)
Item
Quantity
Reference
Description
Note
1
10
C1,C3,C5,C6,C7,C
8, C9,C10,C11,C12
Bypass capacitor / signal
delay / filtering
2
1
C2
Bypass capacitor
3
1
C4
Bypass capacitor
4
1
CN8
Arduino UNO R3 connector
5
2
CN6,CN9
Arduino UNO R3 connector
6
1
CN5
Arduino UNO R3 connector
7
2
CN7,CN10
ST morpho connector
8
1
J1
Debug connector
Not Mounted
9
2
J2
Module IO for
Development
10
2
JP1,JP2
Option jumper
11
2
JP3,JP4
Option jumper
12
1
LED1
Power LED
13
1
LED2
Blinking while module is
running
14
1
LED3
Wi-Fi power UP
15
1
LED4
Wi-Fi link UP
16
3
R3,R19,R21
Option resistor (default)
17
1
R15
Filter for IRQ signal
18
3
R18,R22,R23
Current polarization for
LEDs
19
1
R5
Current polarization for
power LED
