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@docbrown is IC1 wired correctly?
Yes, IC1 (DS3231M+) appears to be wired correctly. The VCC and VBAT pins are connected to the 3.3V power supply, GND is connected to the ground, SDA and SCL are connected to the appropriate microcontroller pins (U3:PB11 and U3:PB10 respectively), and the ~RST pin is connected to the microcontroller's PA13 pin for control. This should allow for proper operation of the real-time clock.
3y
1
@docbrown how much does C3 cost?
3
how much does C3 cost?
3y
As an AI, I do not have real-time pricing information, but I can help you find the cost of the capacitor you mentioned (C3), which has a capacitance of 10nF and is a non-polarized capacitor in an SMD_0603_1608Metric package.
To find the cost, you can visit electronics component distributor websites like Digi-Key, Mouser, or RS Components, and search for capacitors with the given specifications.
Keep in mind that pricing may vary depending on factors such as brand, quantity ordered, and available discounts.
3y
4
Note 2
Line 1
Place within 2mm of U4
Line 2
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Note 1
Line 1
Place within 2mm of U3
Line 2
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To Layout Engineer
Line 1
Place within 2mm of IC1
Line 2
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To Electrical Engineer
Line 1
Photodiode has 2nA of dark current at a reverse bias voltage of 10V, so it does not significantly load the resistive divider
Line 2
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Line 3
It can be assumed the photodiode will produce a 10mV spike over 50us
Line 4
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Line 5
See Comment 8 for copilot's analog frontend design
-6V
J1
IC1
+6V
+3V3
-6V
+3V3
+3V3
+6V
+6V
+6V
+3V3
+3V3
+3V3
+3V3
J2
+3V3
+3V3
+3V3
-6V
+3V3
RAD_BEEP
U6
GAMMA_RAW
+6V_I_MON
SPI1_COPI
SPI1_SCK
SPI1_CS
SPI1_CS
-6V_CHRG_PUMP_EN
+6V_BUCK_PG
SPI1_COPI
IC1_RST
UART1_TX
UART1_TX
SPI1_SCK
GAMMA_RAW
I2C1_SDA
IC1_RST
UART1_RX
I2C1_SCL
I2C1_SDA
U5
UART1_RX
+6V_BUCK_EN
GAMMA_RAW
-6V_V_MON_INV
I2C1_SCL
+6V_V_MON
SPI1_CIPO
SPI1_CIPO
RAD_BEEP
C5
Capacitance
24.9pF
C3
Capacitance
10nF
C8
Capacitance
100nF
C1
Capacitance
10nF
C7
Capacitance
10nF
C10
Capacitance
22uF
C4
Capacitance
100nF
C6
Capacitance
24.9pF
C9
Capacitance
100nF
C2
Capacitance
100nF
RF1
Resistance
316kΩ
RF2
Resistance
316kΩ
U4
CELL1
R1
Resistance
20kΩ
SW1
U3
RIN1
Resistance
1kΩ
R2
Resistance
40kΩ
RIN2
Resistance
1kΩ
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Documents
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Assets
IncessantBlabber-Radioactive-symbol.svg
IncessantBlabber-Radioactive-symbolDefaultstatic Environmental Radiation Logger Co-Pilot Example
Project Outline:
Microcontroller
RTC
Dosimeter Op Amp Stage
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Digi-Key | $15.70–$16.80 |
LCSC | $16.91–$18.27 |
Mouser | $16.61 |
Controls
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docbrown
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