Commonly used MCU module circuit sharing (mainly communication circuit)

When we design the electronic circuit of the single-chip microcomputer, it is often applied to the more commonly used circuit. Every time it is re-typed, it is laborious and troublesome, and it is easy to make mistakes. Therefore, I design the circuit that I use commonly as a module, and I can use it every time. Imitate to watch.

1. Dual 232 communication circuit: 3-wire connection, corresponding to the female, working voltage 5V, you can use MAX202 or MAX232.

When we design the electronic circuit of the single-chip microcomputer, it is often applied to the more commonly used circuit. Every time it is re-typed, it is laborious and troublesome, and it is easy to make mistakes. Therefore, I design the circuit that I use commonly as a module, and I can use it every time. Imitate to watch.

2. Transistor serial communication: This circuit is built with a triode, the circuit is simple, the cost is low, but the problem is generally very good at low baud rate.

When we design the electronic circuit of the single-chip microcomputer, it is often applied to the more commonly used circuit. Every time it is re-typed, it is laborious and troublesome, and it is easy to make mistakes. Therefore, I design the circuit that I use commonly as a module, and I can use it every time. Imitate to watch.

3. Single 232 communication circuit: three-wire mode, which is completely equivalent to the above three-stage pipe.

When we design the electronic circuit of the single-chip microcomputer, it is often applied to the more commonly used circuit. Every time it is re-typed, it is laborious and troublesome, and it is easy to make mistakes. Therefore, I design the circuit that I use commonly as a module, and I can use it every time. Imitate to watch.

4. USB to 232 circuit: PL2303HX is used, the price is cheap, and the stability is not bad.

When we design the electronic circuit of the single-chip microcomputer, it is often applied to the more commonly used circuit. Every time it is re-typed, it is laborious and troublesome, and it is easy to make mistakes. Therefore, I design the circuit that I use commonly as a module, and I can use it every time. Imitate to watch.

5. SP706S reset circuit: with watchdog and manual reset, the price is cheap (the letter is much more expensive), R4 is for debugging, and R4 is soldered after debugging.

When we design the electronic circuit of the single-chip microcomputer, it is often applied to the more commonly used circuit. Every time it is re-typed, it is laborious and troublesome, and it is easy to make mistakes. Therefore, I design the circuit that I use commonly as a module, and I can use it every time. Imitate to watch.

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