Chat

How can I help you?
Sign up to send
C2
Capacitance
100nF
C4
Capacitance
100nF
C17
Capacitance
10uF
MIC_SCL
EXTERNAL FLASH CIRCUIT
QSPI_SD0
QSPI_SS
C14
Capacitance
27pF
User LED for blinking and testing the board
SD_DATA1
LORA_RX
LORA_NRST
SD_CLK
QSPI_SD2
SD_CMD
Cl = 2(Ccap_load - Cstray)
SOLAR POWER INTERFACE
QSPI_SD1
C20
Capacitance
10uF
SD_DATA3
XOUT
C12
Capacitance
100nF
LORA_RX
LORA_NRST
C24
Capacitance
10uF
LoRa MODULE
SD_DATA0
C13
Capacitance
27pF
POWER CIRCUIT
Pull up resistors
Line 1
R6 and r9 are are pull ups for the SD Card line
Line 2
Line 2
C1
Capacitance
100nF
Termination resistors
~USB_BOOT
QSPI_SS
SD_CMD
C8 Should be close to pin 44 of RP2040
MIC_SDA
QSPI_SD3
SD_CLK
MICROCONTROLLER
C10
Capacitance
100nF
C26
Capacitance
100nF
LORA_TX
SD_DATA2
C19
Capacitance
68pF
SD_DATA2
DHT_DATA
C11 Should be close to pin 45 of RP2040
LORA_TX
SD_DATA1
QSPI_SCLK
C9
Capacitance
100nF
C5
Capacitance
100nF
USB_D-
Iset = 6800 / Rset = 1A
C6
Capacitance
100nF
QSPI_SD1
C25
Capacitance
100nF
C11
Capacitance
1uF
C8
Capacitance
1uF
I_ch = (Vset / Rset) * 900 = 900mA
C22
Capacitance
4u7 F
XOUT
SD_DATA0
C3
Capacitance
100nF
XIN
C7
Capacitance
100nF
SD_DATA3
SD CARD CIRCUIT
QSPI_SD2
QSPI_SCLK
QSPI_SD3
QSPI_SD0
USB_D+
MIC_WS
C23
Capacitance
100nF
+3V3
VBAT
+3V3
+3V3
+1V1
+3V3
+1V1
+1V1
+3V3
+3V3
+3V3
+3V3
+3V3
D2
Color
Green
R19
Resistance
1k5 Ω
R9
Resistance
10kΩ
R14
Resistance
6k8 Ω
R8
Resistance
15kΩ
R13
Resistance
68kΩ
R4
Resistance
1kΩ
R2
Resistance
27.4 Ω
R18
Resistance
1kΩ
R16
Resistance
50 Ω
R17
Resistance
50 Ω
R7
Resistance
2kΩ
R1
Resistance
27.4 Ω
R3
Resistance
10kΩ
R6
Resistance
10kΩ
SW1
J1
U2
SW2
U1
Y1
U3
U5
U6

Curve Trace Blank While Routing Issue