ST-Link V3 Developer Board

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This is a dev board for advanced developers, who need in-circuit debug. It is based on ST-Link V3 Mini and differs only in form factor and ease of connection. Some unused ST-Link and Flipper Zero pins are broken out additionally.
You do not need this board to update Flipper Zero
You can update the firmware, develop and upload your own firmware to Flipper Zero via USB without this dev board! It is only needed for in-circuit debug while the firmware is running using GDB/OpenOCD/etc. If you don't know exactly how to use it, you don't need this board.
Specifications
ST-Link V3 Mini for firmware flashing and in-circuit debug
Built-in UART to USB, connected to Flipper Zero's UART (GPIO 13, 14)
Unused Flipper Zero pins are broken out for debugging and prototyping
Schematic and BOM
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Altium Designer project sources
﻿github.com/Flipper-Zero/flipperzero-devboard-stlinkv3﻿

Updated 11 Sep 2023

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You do not need this board to update Flipper Zero

Specifications

Schematic and BOM

Altium Designer project sources