The oscilloscope is one of the most important tools to be used by any amateur electronic enthusiasts, but not everyone can afford. Because commercial finished oscilloscopes are often too expensive, almost every electronic enthusiast thinks, find an oscilloscope that can start DIY from the beginning of the head. Below 8 aspects, give yourself a chance.
1, based on STM32 oscilloscope DDS signal generator
The DDS signal generator uses STM32VET6 as the main control chip, the DDS chip uses AD9708, and the external interface supports manual buttons, SD cards, USB interfaces, and more. The circuit mainly has a STM32 minimum system and a power supply circuit, and a parallel signal conversion and an external connector.
https://www.cirmall.com/circuit/1911
2, 1x1 20MSPS oscilloscope based on PIC32MZ
We are designing a PIC32MZ-based oscilloscope, which is only 1 inch × 1 inches, including an OLED screen. The project is designed around the PIC32MZ EF processor. We use its internal ADC in a staggered mode to get a complete 20MSPS. We found that we can achieve approximately 1 MHz bandwidth in practice.
https://www.cirmall.com/circuit/10332
3, STM32F103 oscilloscope + signal source simulation information
Osmators and Signals Based on STM32F103Zet6. Perfectly ported to the positive atomic development board without modifying the program. The software is made based on UCOSIII + STEMWIN 5.26. The display uses a positive point atom 2.4 inch LCD screen. Use a touch screen as an interactive mode. The acquisitionable frequency is not more than 40 kHz, no flashes. The time interval, the amplitude range, and the upper and lower translation can be selected by the touch screen. Output square waves, sine wave, triangular wave, frequency, amplitude, and duty cycle are adjustable. Display triangular waves.
https://www.cirmall.com/circuit/12400
4, oscilloscope design based on 15 single chip microcomputer
Based on the microcontroller homemade oscilloscope data 15 single-chip main control, program principle map source file, can measure sine wave, triangular wave, square wave, can suspend four screens, replace multiple background diagrams, frequency measurement range can be as high as 20MHz, including software flow chart , Reply, PPT and design reports, can be used as a courses, for punctual use, the actual use error is relatively large, after all, the oscilloscope is a high-demand instrument, do not relatively true.
Https://www.cirmall.com/circuit/15593
5. Simple digital oscilloscope design of 51 single-chip microcomputer Design LCD12864 LCD oscilloscope electronic kit real (Schematic + source code + PCB)
This design hardware circuit part is composed of a single-chip control system circuit, forward input conditioning circuit, analog to digital conversion, and storage circuit, and a button display circuit. The basic idea of its work is to control the core with a single chip, let the AD chip complete data discretization, collecting data is suspended in memory, when the waveform is displayed, the microcontroller reads the memory read by the memory to read the acquisition data. In the array, then the corresponding data processing is performed and the saved data is switched in a certain order, thereby reproducing the waveform signal; wherein the input conditioning circuit is composed of an impedance conversion circuit, a signal raised circuit, and a frequency measurement circuit. The impedance transform circuit is to improve the input impedance, and the signal lifting is to make the amplitude of the signal satisfy the input amplitude of the AD chip, and the frequency measurement circuit is mainly the frequency of measurement of the periodic signal.
https://www.cirmall.com/circuit/18103
6, the oscilloscope is too expensive, foreign open source teaches you to have your own oscilloscope!
The input circuit is an OPA2652 operational amplifier of Texas Instruments (TI), and a low-pass filter consisting of RC, which is set to 20 MHz. Further, the input circuit uses a vertical scanning shift (offset) of the input processing of the PWM signal (pin 15) generated by the microcontroller. The ADC converter is an 8-bit ADS830, from Texas Instruments, can work to 60MSPS, in this design, ADC works at most 40MHz. This clock is generated by QoS40 (plastic) or QOM40 (gold seal) oscillator, can be programmed (divided) (Xilinx's XC9572) via CPLD circuit (XILINX. When processing the large code stream acquired by the ADC high rate, the digital output of the ADC is connected to a high-speed FIFO memory IDT7201 (length 512 byte) from the IDT. When the memory buffer is full, the content of the entire memory is put. To the memory of the microcontroller, further process therein, then display it on the liquid crystal display ...
https://www.cirmall.com/circuit/6624
7. Based on STM32 oscilloscope DDS signal generator
The DDS signal generator uses STM32VET6 as the main control chip, the DDS chip uses AD9708, and the external interface supports manual buttons, SD cards, USB interfaces, and more. The circuit mainly has a STM32 minimum system and a power supply circuit, and a parallel signal conversion and an external connector.
https://www.cirmall.com/circuit/1911
8, based on STC89C52 single-chip digital oscilloscope
This design is based on STC89C52 (STC 89C52 Data Manual) microcontroller digital oscilloscope, and the test parameters are displayed on the LCD 12864.
The specific functions are as follows: 1. Voltage axis subsection scalar 2. Timeloidal segmentation scales 3. AC DC switch 4. Run stop switching 5. Voltage measurement 6. Frequency measurement 7. Wave mode translation
https://www.cirmall.com/circuit/1381
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