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Quail is an STM32-powered development solution for building hardware prototypes with click boards and C# managed code. It brings together click boards and Microsoft’s .NET Micro Framework for embedded devices (NETMF). Write code for your Quail projects in Microsoft Visual Studio (free in the community edition); drivers for individual click™ boards are provided by the MikroBUS.NET team.
Hardware-wise, Quail has 4 mikroBUS™ sockets for click board connectivity, along with 24 screw terminals for connecting additional electronics and two USB ports (one for programming, the other for external mass storage). The board runs on a 5V power supply.
RS232 click provides an interface between the TTL/CMOS logic levels commonly used on microcontrollers and the RS-232 bus. RS-232 is a rather old communication protocol that has survived thanks to its robustness and implementation on many personal computer motherboards. It can still be found on various pieces of DTE and DCE equipment. This Click board™ allows standard type MCUs to communicate through the RS-232 interface via the standard UART bus pins: RX and TX. The RS-232 click utilizes the MAX3232, a 3.0V to 5.5V low power, true RS-232 transceiver, from Maxim Integrated. This device can achieve communication speed up to 232 kbps (EIA/TIA-232).