A digital oscilloscope Based on MCU
Introduction
We design a digital oscilloscope with STC8A8K64S4A12 chip as the control core, which mainly consists of two modules: hardware circuit and software program. The hardware module mainly includes OLED screen, voltage sampling circuit, clock system, power supply and management module and so on. The software module mainly includes A/D sampling, OLED display, interrupt timing and some necessary data processing. its measurable bandwidth is 0-3000Hz, the measured range is 0-30V. After many tests and comparisons, the design achieves the amplification and reduction of waveform and the measurement of different frequency waveform in the experimental process, so as to achieve the desired goal.
Methodology
Experimental setup
Step 1:Preparation
Material List:
- MCU: STC8A8K64S4A12 x 1
- Display: SSD OLED(with 7-Pin SPI Interface) x 1
- Resistor:1W 11k x 1, 1/4W 22k x 2, 1/4W 11k x 1
- Capacitor:47uF x 1, 0.01uF x 1
- EC11 Encoder x 1,Toggle Switch x 1,2-Pin Terminal x 1
- IC Socket 40-Pin x 1,Row Pin (7-Pin&12-Pin)
- 3.7V Li-ion Battery x 1
- 5V Booster Module x 1
- USB-TTL Downloader x 1
- Circuit Board x 1