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AvocAudio: A tinyML community board v1
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MK1
@copilot, develop an FMEA (Failure Mode and Effects Analysis) report in a table ...
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21
list all ICs and the decoupling capacitors attached to each. Ensure to include a...
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23
are any of my components missing pin connections that will cause failures?
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4
what is the total power consumption of this project. Also calculate how a 4000mA...
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9
, review the design to ensure all current-limiting resistors for LEDs are correc...
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22
Determine the efficiency of U4 at various load conditions, considering that the ...
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20
From the datasheet of U2 List the pin names, functions, and additional attribute...
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17
create a detailed step by step plan table for this project to verify its functio...
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6
, perform a BoM consolidation review to identify passive components that are mar...
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16
in a table format and Based on the specifications of this IC, including the maxi...
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8
I need to optimize the Bill of Materials (BOM) for this PCB design to reduce the...
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13
What are the absolute maximum ratings for U5? Identify any critical components t...
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15
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5
create a high level mermaid block diagram of this project. Include key component...
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3
create a detailed step by step plan table for this project to verify its functio...
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19
Use Python to calculate the load capacitors for Y1 using the information from it...
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14
, create a comprehensive hardware design test plan to ensure that all components...
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18
create a high level mermaid block diagram of this project. Include key component...
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7
C17
Capacitance
10uF
C24
Capacitance
10uF
C18
Capacitance
100nF
C29
Capacitance
100nF
C19
Capacitance
68pF
C15
Capacitance
10uF
C21
Capacitance
100nF
C16
Capacitance
4u7 F
C22
Capacitance
4u7 F
C23
Capacitance
100nF
C2
Capacitance
100nF
C28
Capacitance
100nF
C4
Capacitance
100nF
C14
Capacitance
27pF
C20
Capacitance
10uF
C12
Capacitance
100nF
C13
Capacitance
27pF
C1
Capacitance
100nF
C10
Capacitance
100nF
C26
Capacitance
100nF
C9
Capacitance
100nF
C5
Capacitance
100nF
C6
Capacitance
100nF
C25
Capacitance
100nF
C11
Capacitance
1uF
C8
Capacitance
1uF
C27
Capacitance
100pF
C3
Capacitance
100nF
C7
Capacitance
100nF
MIC_SCL
EXTERNAL FLASH CIRCUIT
QSPI_SD0
QSPI_SS
Can connect a DHT11 or DHT22 Sensor
User LED for blinking and testing the board
SD_DATA1
LORA_RX
LORA_NRST
SD_CLK
QSPI_SD2
One-Wire protocol relies on the bus being pulled high by the pull-up resistor when not actively transmitting
SD_CMD
MIC_WS
Cl = 2(Ccap_load - Cstray)
SOLAR POWER INTERFACE
QSPI_SD1
SD_DATA3
USB_D-
XOUT
LORA_RX
LORA_NRST
LoRa MODULE
SD_DATA0
TEMP & HUMIDITY CIRCUIT
POWER CIRCUIT
Pull up resistors
Line 1
R6 and r9 are are pull ups for the SD Card line
Line 2
Line 2
XIN
Termination resistors
~USB_BOOT
QSPI_SS
SD_CMD
C8 Should be close to pin 44 of RP2040
MIC_SDA
QSPI_SD3
Q1 Disconnects SOLAR input when both SOLAR and USB are connected. NOTE: This is a depletion type mosfet
SD_CLK
MICROCONTROLLER
LORA_TX
SD_DATA2
SD_DATA2
DHT_DATA
C11 Should be close to pin 45 of RP2040
LORA_TX
RF filter capacitors, C27, should be the closest to the microphone
SD_DATA1
QSPI_SCLK
USB_D-
Iset = 6800 / Rset = 1A
QSPI_SD1
I_ch = (Vset / Rset) * 900 = 900mA
XOUT
SD_DATA0
MICROPHONE CIRCUIT
DHT_DATA
XIN
MIC_SDA
SD_DATA3
SD CARD CIRCUIT
QSPI_SD2
QSPI_SCLK
QSPI_SD3
MIC_SCL
QSPI_SD0
USB_D+
MIC_WS
USB_D+
USB INTERFACE
+3V3
D2
Color
Green
VUSB
D1
R15
Resistance
10kΩ
R10
Resistance
470 Ω
R19
Resistance
1k5 Ω
R9
Resistance
10kΩ
R14
Resistance
6k8 Ω
R8
Resistance
15kΩ
VBAT
R13
Resistance
68kΩ
VUSB
VBAT
+3V3
VSOLAR
R4
Resistance
1kΩ
VSOLAR
R2
Resistance
27.4 Ω
+3V3
+3V3
R18
Resistance
1kΩ
R11
Resistance
1k5 Ω
R16
Resistance
50 Ω
VBAT
+1V1
D4
Color
Red
+3V3
+1V1
+3V3
+3V3
R17
Resistance
50 Ω
R7
Resistance
2kΩ
R12
Resistance
50 Ω
R1
Resistance
27.4 Ω
+1V1
R5
Resistance
5kΩ
+3V3
R3
Resistance
10kΩ
R6
Resistance
10kΩ
+3V3
+3V3
+3V3
+3V3
+3V3
+3V3
D5
Color
Green
J5
J2
SW1
SW2
U1
Y1
J1
J6
J3
U3
Q1
U5
L2
Inductance
2u2 H
J4
U2
U6
U4
Project
AvocAudio: A tinyML community board v1