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I. Application Background With the development of urban intelligent transportation, accessibility facilities are receiving increasing attention. For visually impaired individuals, relying solely on visual traffic signals is insufficient for safe stre...

1. Upgrade and Download Instructions Connect the chip’s USB port to a standard USB interface. The first pin is the chip’s power supply pin. 1.1. Upgrade Operations In most cases, when downloading a program to a development board or prototype, the reg...

1. Enable various test functions based on actual requirements, configure the dip switch settings, and determine whether to test call frequency deviation. 2. The test box can connect to two devices simultaneously for testing. It is recommended to have...
