License

This repository contains schematic of development boards, PCB, and C++ source code templates that can be helpful for development using STM32 micro-controllers. It provides small, universal, and breadboards-friendly adapter and development board for wide range of STM32 controllers. There are three sets:

The first board is a two-layers STM32F4 board, which have a form-factor of Raspberry Pi B+ that allows us to use any case available for this single-board computer:

Case view

If you like to test this board, you can order it on DirtyPCBs.com

• It is based on high-performance ARM®Cortex®-M4 32-bit RISC micro-controller STM32F405RG
• SMD HSE and LSE crystals
• Micro SD Card Connector
• Mini USB Type B Connector with USB EMI filtering and ESD protection. This connector can be used for data transfer and powering
• A separate +5V DC connector (1 mm X 3.2 mm) instead of Raspberry Pi audio jack
• 6-pin SWD connector used to program the MCU
• ESP8266 WiFi Module ESP-11 instead of Raspberry Pi network connector
• 5-pin connector used to flash and program the ESP-11 module
• Breadboard-compatible 1x20-pin and 1x10-pin headers connected to free MCU pins
• Reset button
• One RGB LED
• Low power audio DAC with PLL UDA1334ATS
• 2x class-D mono audio power amplifier IS31AP2005 (2 x 2.95W)
• 4 pads for audio output instead of Raspberry Pi USB connector
• SMD size for passive components is 0805

Top view

• Отладочная плата STM32F4 в форм-факторе Raspberry Pi (In Russian)
• Schematic
• Dimensions
• Top layer
• Bottom layer
• Bill of materials
• The C++ example in the directory src/PI405RG demonstrates how to use RTC, SD Card with FatFS, and ESP-11 module.

These developments boards are two-side breadboard adapters for LQFP32/48/64 IC's, equipment with adaptable power supply circuit, HSE and LSE crystal circuit, reset button, and a custom 10-pin JTAG connector. SMD size for passive components is 0805.

Assembled boards

The adapter between 20-pin JTAG and this custom connector is also included in the set:

Development boards layout

You can order these boards on DirtyPCBs.com

These boards are just one-side breadboard adapters for LQFP32/48/64 IC's:

Adapter boards layout

You can order these boards on DirtyPCBs.com

• The directory pcb contains schematic and board layout developed in Eagle CAD
• In the directory images, you can find some photos of assembled boards
• The directory src contains test examples developed in System Workbench for STM32. These test programs are based on HAL library and an object-oriented abstraction layer called StmPlusPlus. Currently, following chips are tested: STM32F303K8Tx, STM32F303RBTx, STM32F373CBTx, STM32F373CCTx, STM32F410RBTx, STM32F405RGTx

• Discussion on www.mikrocontroller.net (In German)
• Нестандартный способ подружиться с STM32: не Ардуино и не Discovery (In Russian)

This software is published under the GNU General Public License, Version 3

Copyright (C) 2014-2017 Mikhail Kulesh

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program.

If not, see www.gnu.org/licenses.