The PYboard PYB1.1 is a compact and powerful development board built around the STM32F405RG microcontroller, running at 168 MHz with hardware floating-point, and featuring 1 MB flash and 192 kB RAM. It supports MicroPython out-of-the-box, offering Python-based control of hardware interfaces such as UART, I2C, SPI, ADC, DAC, and more. The board includes a microUSB connector for power and data, a microSD card slot for storage expansion, an on-board 3-axis accelerometer, a real-time clock with optional battery backup, a user LED, and a user switch. Designed for rapid prototyping and embedded application development, the PYboard provides an easy and efficient way to interact with hardware using Python. Its compact form factor, strong processing power, and extensive peripheral support make it an excellent choice for IoT systems, robotics, automation, and real-time control projects. Features: 168 MHz ARM Cortex-M4 core (STM32F405RG) with hardware floating point. 1 MB flash memory and 192 kB RAM – ample space for scripts and applications. Built-in MicroPython support with interactive REPL via USB and file execution. Micro USB connector for power and USB serial/drive interface. microSD card slot for storage expansion and script storage/booting. On-board 3-axis accelerometer (MMA7660) for motion sensing. Multiple GPIOs, analog inputs (3×12-bit ADC), DACs (2×12-bit), LEDs and user switch. On-board 3.3 V regulator, input voltage range 3.6 V–16 V, with DFU bootloader support for firmware updates. Package Includes: 1 x PYboard PYB1.1 STM32F405 Microcontroller Board1 x USB Cable2 x 40 Pin Header
Specifications
| MCU core | STM32F405RG at 168 MHz, Cortex-M4 with FPU. |
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| Memory | 1 MB flash + 192 kB RAM. |
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| Connectivity | microUSB (power + data), SD-card slot. |
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| Peripherals | ADC, DAC, I2C, SPI, UART, accelerometer, RTC. |
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| Power supply | input 3.6 V–16 V, regulated 3.3 V output capability. |
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| Item Type: | Development Board |
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| Model No. / Name: | PYB1.1 |
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| RAM: | 192 KB |
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| ROM Capacity: | 1 MB Flash |
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| Processor Type: | ARM Cortex-M4 |
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| Microcontroller: | STM32F405RG |
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| Clock Speed | 168 MHz |
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| Core: | Cortex-M4 (Single Core) |
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| CPU | 32-bit ARM Cortex-M4 with FPU |
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| Additional Specs.: | On-board accelerometer, RTC, USB interface, user LED & switch |
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| Interface: | microUSB for power and serial/USB drive mode |
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| On-Board Sensors (Y/N): | 3-axis accelerometer (MMA7660) |
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| Length (mm): | 45 |
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| Width (mm): | 35 |
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| Weight (g): | 07 |
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| Shipping Weight | 0.1 kg |
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| Shipping Dimensions | 16 × 12 × 3 cm |
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