Shield fo Raspberry PI zero W.

Introduction

This shield created for moving many digital servos as LOBOT LX-16A or LOBOT LX15D.

Desing

This shield included microcontroller stm32f413 and st-link scheme on stm32f103 base. Stm32f413 connected to raspberry connector via SPI, UART and I2C interfaces. You can to use stm32f413 as:

• USB/UART bridge for raspberry console (microcontroller has USB interface);
• UART hub (all 10 UARTs of microcontroller brought to a separate connector);
• and so on.

Hardware features jf shield:

• connect to raspbery via different interfaces;
• onboard debugger;
• standalone work on cortex M4 CPU without connect to raspberry;
• 3.3 to 5.0 bidirectional voltage shifter on UARTS connector;
• uarts worked in half-duplex 1-wire mode.

Manufacturing

This project optimized for manufacturing on JLCPCB. You can assembly all components, except for STM32F413VGT3 chip. This chip not included in stock of LCSC. Also service JLCPCB does not assemly connectors. But all connectors of BOM available in stock LCSC.