Main components

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Part NumberDescription
ESP32-WROOM-32RF Module, ESP32-D0WDQ6 SoC, Wi-Fi 802.11b/g/n, Bluetooth, BLE, 32-bit, 2.7-3.6V, onboard antenna, SMD
AZ1117-3.31A 20V Fixed LDO Linear Regulator, 3.3V, SOT-89/SOT-223/TO-220/TO-252/TO-263
INA219AxDZero-Drift, Bidirectional Current/Power Monitor (0-26V) With I2C Interface, SOIC-8

espSAT schematic

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espSAT board layout

espSAT PCB render

Top PCB
Bottom PCB