When the RS485 bus is idle, the oscilloscope measures a differential voltage of ±3.7V between the AB lines, with a periodic waveform of 50 Hz. This does not affect the normal communication of the devi
This is a high-power PW device in the L bandAs shown in the pictureThe design requirements of the filter are also high powerThe picture belowScrewThere are traces of burns in the picture
Today I tested the GNSS function on Beetle ESP32-C3. The GNSS is VK2828, Beidou + GPS dual-mode, and the positioning speed is relatively fast.The power supply of GNSS is directly from 3.3V on Beetle E
PrefaceThis application note mainly describes a case of implementing a simple HDMI CEC transceiver function based on AT32 GPIO and timer peripherals.Consumer electronic control (CEC) isa function of t