Offers customizable I/O port access with expansion connectors
The Waveshare Core407I STM32F4 Core Board is a compact development platform featuring the STM32F407IGT6 microcontroller, designed for initiating application development within the STM32F family. This board integrates essential components such as a USB communication interface, JTAG/SWD programming and debugging interface, clock circuit, and USB power management. It also includes a boot mode selection feature, making it a comprehensive, ready-to-run system.
The board is equipped with pin headers on the backside, allowing it to be easily integrated into application boards, serving as the MCU core circuit. All input/output ports are accessible via these pin headers, which are designed with a 2.0mm pitch to minimize PCB size. The STM32F407IGT6 microcontroller offers high performance with a Cortex-M4 32-bit RISC core, operating at a frequency of 168MHz. It supports a wide range of communication interfaces, including SPI, USART, UART, I2S, I2C, FSMC, SDIO, CAN, USB 2.0, and Ethernet MAC.
Additional features include AD and DA converters, a power supply switch, a boot mode switch, power indicators, and a reset button. The board also supports USB communication as both a device and a host, with the capability to connect to USB devices via an OTG cable. Expansion connectors provide access to all I/O ports, VCC, and GND, facilitating further development and customization.
AMS1117-3 (on bottom side), 3.3V voltage regulator
MIC2075 (on bottom side), onboard USB power management device
Power supply switch, powered from 5Vin or USB connection
Boot mode switch, for configuring BOOT0 pin
Power indicator
VBUS LED
Reset button
8M crystal oscillator (on bottom side)
32.768K crystal (on bottom side), for internal RTC with calibration
JTAG/SWD interface: For debugging/programming
USB interface: As DEVICE, used for establishing USB communication between PC and the STM32 development board; As HOST, connecting to USB devices such as USB flash drive through a USB OTG cable
MCU pins expander, VCC, GND, and all the I/O ports are accessible on expansion connectors for further expansion
5Vin pinheader, 5V power supply is required when using USB HOST/OTG
USB HOST/OTG jumper: Short the jumper when using USB HOST/OTG; Open the jumper to disconnect from I/O port
VBAT selection jumper: Short the jumper to use system power supply; Open the jumper to connect the VBAT to external power, such as a battery
VREF selection jumper: Short the jumper to connect VREF+ to VCC; Open the jumper to connect VREF+ to another custom pin via jumper wire
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".