Tanotis ARM Cortex-M3 STM32F103RBT6 STM32 development board RS232/UART JLink JTAG Camcorder Accessories There are 5 different cycles

There are 5 different cycles to choose from

Direct eye contact should be avoided

but can handle less current than a reed switch

4 Standard electronic building blocks Interface

Tanotis ARM Cortex-M3 STM32F103RBT6 STM32 development board RS232/UART JLink JTAG Camcorder Accessories There are 5 different cyclesARM Cortex M3 STM32F103RBT6 STM32 development board RS232 UART JLink JTAG Description Specification: 1, chip board STM32F103VBT6 2, board JTAG interface and reset button 3, the onboard crystal 32. 768KHZ and 8MHZ 4, with a 5V chip, 3. 3V AMS1117 3. 3 switch 5, with a RS232 serial port, UART1 and UART2 can be set by jumper 6, all I O all the leads, and mark the I O name 7, supports USB power supply and power supply JLink Power On 8, board size 71 (mm)