STC oscilloscope pen

An upgraded version based on the previous project [STC8G1K color oscilloscope]

For the upgraded version, see [STM32G0 Oscilloscope Pen]

I drew the board and upgraded it to the STC8G1K17-TSSOP20 chip, which supports dual-channel adjustable frequency and adjustable duty cycle PWM output, as well as ADC dual-pass input.

The board can also be integrated into other modules for collection. For videos, please see [New version video, incremental update display] [Old version video, please cooperate to watch]

The current functions are:

AD input voltage 0-3.3V/5V (depends on the screen, and whether the voltage is divided from 5V to 3.3V is optional)

8bits@200Khz

1-2-5 time base step from 5us to 500us

Vertical magnification 1-2-5 times

Three triggering methods, 10 trigger levels from 0-90%

Waveform measurement function

1-2-5 time base switching PWM output frequency from 100kHz to 2Hz

5% step switching PWM output duty cycle from 5% to 95%

3 independent buttons for multi-level menu switching

2 programmable LED lights

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Please refer to the notes on the schematic diagram and PCB diagram for precautions.

BOM is not trustworthy, please go to X letter to buy similar packaged components (referring to connectors)

Due to copyright reasons, the silk screen of the open source project will be deleted

Note, please adjust the frequency to 32Mhz when downloading

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The code will be open sourced after the new version is updated. Currently, only firmware downloads are available. The code has been open sourced, see the warehouse [gitee]

If a bug occurs during operation, please send a message via Lichuang Kaiyuan/b site private message/comment area or email. I will modify the program and update it in time.

If you need more cooperation, please only specify the email address  Defenver@foxmail.com

See the actual picture below

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