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Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Digi-Key | $21.77–$33.31 |
LCSC | $128.39–$128.43 |
Mouser | $32.64 |
Controls
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arteczx
copilot
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Connect power to all devices from the battery.
- Battery Pack BATT1
- Connect BATT1:+ to J2:P1.
- Connect BATT1:− to J1:P2.
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Create a common ground and power net:
- Connect J2:P1 to J3:VDD, U1:VDD, U2:VIN, U3:VCC, U3:VDDUSB, U3:VBCKP, U5:3.3V.
- Connect J1:P2 to J3:VSS, U1:GND, U2:GND, U3:GND, and U5:GND.
Communication Connections I2C Bus (for U2 and possibly U3)-
Connect U2:
- Connect U2:SDA to U1:IO21.
- Connect U2:SCL to U1:IO22.
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Connect U3 to the I2C Bus or UART, based on configuration:
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If I2C is selected, connect as follows:
- Connect U3:SDA/\text{\~SPI_CS} to U1:IO21.
- Connect U3:SCL/SPICLK to U1:IO22.
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If UART is selected, connect as follows:
- Connect U3:TXD/SPIMISO to U1:RXD0/IO3.
- Connect U3:RXD/SPIMOSI to U1:TXD0/IO1.
SPI Bus (for U5)-
Connect U5:
- Connect U5:MISO to U1:SDO/SD0.
- Connect U5:MOSI to U1:SDI/SD1.
- Connect U5:SCK to U1:SCK/CLK.
- Connect U5:NSS to a GPIO on the ESP32, for example, U1:IO5.
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Optional connections for U5's DIO pins:
- Connect U5:DIO0 to a GPIO on U1, for example, U1:IO23.
- Connect U5:DIO1 to another GPIO on U1, for example, U1:IO19.
Interface Connections- Connect J3 (SD card interface):
- Connect J3:CMD to U1:SCS/CMD.
- Connect J3:CLK to U1:SCK/CLK.
- Connect J3:DAT0 to U1:SDI/SD1.
- Connect J3:DAT1, J3:DAT2, and J3:DAT3 to unused GPIOs on U1.
Reset and Enable Pins