Summary of A SIMPLE MINIATURE DIGITAL STORAGE OSCILLOSCOPE POWERED BY AN STC MCU
CreativeLau published a DIY guide showing how to build a simple, low-cost miniature digital storage oscilloscope using an STC8A8K64S4A12 DIP microcontroller. The Mini DSO can observe waveforms from 100 µs to 500 ms time intervals, measure 0–30 V (but cannot read negative voltages), and display signals in vector or dot draw modes. The build is simple, inexpensive, and pairs well with an STC-based function generator for hobbyist debugging and signal observation.
Parts used in the Mini DSO:
- STC8A8K64S4A12 microcontroller (DIP package)
- PCB or protoboard for mounting components
- Power supply components (for MCU and front-end)
- Input voltage conditioning components (resistors, attenuators)
- Signal coupling components (capacitors, protection diodes)
- Display module (for waveform visualization)
- User interface components (buttons or rotary encoder)
- Connectors/probes for signal input
- Passive components (resistors, capacitors, headers)
- Enclosure or mounting hardware
For makers and electronics engineers, the oscilloscope is one of the most important tools in the lab. It is a test instrument for visualizing and observing various signals usually as a two-dimensional plot of signals against time.
Apart from being used to view and compare waveforms in the design and debugging of electronic systems, the oscilloscope is also very useful in determine voltage levels, frequencies, and other signal parameters as they change with time. However, most of the oscilloscopes available today are quite expensive, be it small or advanced.
In a bid to make things easier, several projects are beginning to show up on how someone, with the right tools, can create cheap and compact oscilloscope that will do the job for hobby tasks. One of such is CreativeLau’s build that puts a tiny Digital Storage Oscilloscope within your reach.
Following an earlier release on how to make an STC-powered function generator on his YouTube channel, maker Creative Lau has published another DIY guide, this time on how to easily build a simple miniature digital storage oscilloscope with a DIP-packaged STC8A8K64S4A12 microcontroller unit for basic engineering needs.
“This is a simple oscilloscope made with STC MCU. You can use this Mini DSO to observe waveforms with a time interval of 100us – 500ms, the voltage range of 0-30V, and a draw mode of vector or dots” says Lau as he writes about his project.”
Lau’s build goes hand in hand with the STC-powered function generator. It is simple, cheap, and easy to assemble. The only limit is that it is still unable to read voltages lower than zero; it’s readings automatically stop at zero no matter how low the voltage goes.
Read more: A SIMPLE MINIATURE DIGITAL STORAGE OSCILLOSCOPE POWERED BY AN STC MCU
- What microcontroller is used in the Mini DSO?
The Mini DSO uses the STC8A8K64S4A12 microcontroller in a DIP package. - What time interval range can the Mini DSO observe?
It can observe waveforms with a time interval of 100 microseconds to 500 milliseconds. - What voltage range can the Mini DSO measure?
The voltage range is 0 to 30 volts. - Can the Mini DSO measure negative voltages?
No. It is unable to read voltages lower than zero and readings stop at zero. - What draw modes are available on the Mini DSO?
It supports vector and dots draw modes. - Is the Mini DSO intended for professional or hobbyist use?
The build is described as simple, cheap, and suitable for hobbyist/basic engineering needs. - Does the Mini DSO pair with other DIY tools?
Yes. The project pairs well with an STC-powered function generator from the same maker. - Is the Mini DSO expensive compared to commercial oscilloscopes?
No. It is presented as a low-cost alternative to expensive commercial oscilloscopes.
