PrefaceThis time, as planned, I started to add an external LCD screen, and selected five IO ports PB4 5 6 7 8 on the board to communicate with the screen. PA1 was selected as the ADC acquisition port,
[i=s] This post was last edited by Cheng Qiuxiang on 2019-1-22 10:40 [/i] What voltage regulator chips can output 6.4-6.5v? Input voltage 9v-12v, output current 2a, excluding voltage regulator diodes.
Temperature measurement is required in many places. When designing a temperature telemetry system, it is usually necessary to use a battery-powered, extremely low-power module. There are many traditio