stc8g and ch552

• The smallest system of the STC8G1K08 series, the pin header is connected downward and can be directly inserted into breadboards or perfboards.

• The smallest system of the CH551G series, the pin header is connected downward and can be directly plugged into the breadboard.

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2020/5/30：One was welded, and after being broken apart, it was ground on the ground and turned out to be very crooked.

After welding, I found that the smallest board of stc8g did not respond when powered on, and the power light did not light up. It is measured that the GND on both sides is disconnected. I see that there is no problem with the network connection of the pcb file. Only later did I see that the GND I connected using a large area of ​​copper was broken open and disconnected. So I had to fly a line before I could use it. (already modified)

I didn't read the stc document carefully, but now I know that the one that can be downloaded directly via USB is stc8g1k08. Mine is stc8g1k17. This one is not supported, so just solder this one, and buy the rest and solder them later. . The small board can be used to easily build breadboard circuits. The small size makes it very convenient for small productions. Especially ch552, with USB, can be used as a small keyboard.

Attached are the lighting programs for the two boards. I have not been exposed to microcontrollers for a long time, and I am still in the process of learning, so I light up the lights.

The simulated keyboard is a ch552g board and I modified it a little bit based on this guy’s code (I couldn’t understand it after studying it for a long time. If I modify it a little more, I’ll get all sorts of errors.