I've been using a 485 hardware delay-free circuit recently, but there are some problems in actual use.When using a logic analyzer to analyze data (from top to bottom, TX, DE, TE, and RX), after the Mo
In the previous section, we introduced the most common and most expected method of controlling WS2812 with STM32, which is to use PWM to control the signal and transmit the array data through DMA to e
I recently used the Howland constant current source circuit. The amplifier is LMV614. The output currents are 0.5ma, 1ma, 3ma, and 5ma. However, when I finished drawing the board and tested it, I foun
The power supply charges the capacitor through a resistor (the charging current changes with time): Vt="E"*[1-exp(-t/RC)] The fully charged capacitor discharges through a resistor (the discharge curre
The forum is so quiet... I'll upload a 4x4 keyboard library for everyone to play with. [b]Connection:[/b] [align=left]Keyboard esp32[/align] [align=left]Row 1 io19 [/align][align=left]Row 2 io18[/alig
The process from power-on reset to code running to main function of each MCU is the MCU boot. In fact, not only MCU, but any other type of processor has such a process. Here, we take TI C2000 F28069 a