Tag: measure

STM32 ADC NTC thermistor halves (halved) look-up table method to achieve temperature measurement function

This article mainly describes – the idea and code implementation of the temperature measurement function of the STM32 ADC NTC thermistor bisection (halved) look-up table method NTC related attributes: R25=10K±3% B25/50=4100K±3% 10K pull-up The circuit diagram of STM32 ADC to implement NTC temperature measurement is as follows: The ADC resolution of STM32 is 12 bits, […]

Binocular vision practice–single view measurement method

Table of Contents 1. Introduction 2. 2D transformation 1. Isometric transformation (Euclidean transformation) 2. Similar transformation 3. Affine transformation 4. Projective transformation (perspective transformation) 5 Conclusion 3. Shadow cancellation point and shadow cancellation line 1. Lines on a plane 2. Intersection point of straight lines 3. 2D infinity point 4. Infinity straight line 5. Perspective […]

[2023 Jichuang Competition] Third Prize of Xinnuoda Cup: Measurement Guide for the Performance of LM386N-1 Audio Power Amplifier

This article is a sharing of the third prize national works of the Xinnuoda Cup in the 2023 Seventh National College Student Integrated Circuit Innovation and Entrepreneurship Competition (“Jichuang Competition”). Participate in the [Prize-winning Collection] of Jishu Community to share your 2023 Jichuang Competition works. , show off the style of your works, share the […]

Bypass shooting range practice – penetration testing – teach you step by step SQL injection (9) – Bypass posture (how to bypass filtering measures?)

Bypass-penetration testing—teach you step by step SQL injection—Bypass posture (how to bypass filtering measures?)http:/ /t.csdnimg.cn/lHJ5D Continuing from the above, I have previously explained to you how to bypass various common filtering measures during the SQL injection process. Here, I will combine it with the relevant shooting range (for shooting range resources, please see the resource […]

ESDA in PySal (4): shape-measures: shape measurements

ESDA in PySal (4): shape-measures: shape measurements 1.Measures of shape The esda.shape module provides statistics used in the literature to measure the structure and regularity of polygons. These measurements range from the very simple, such as length-width difference, to the very complex, such as normalized moment of inertia. Anyway, we’re going to go over step […]

STM32 HAL library advanced timer input capture pulse width measurement

STM32 HAL library advanced timer input capture pulse width measurement Related article “STM32 HAL library timer input capture SlaveMode pulse width measurement” ?Compared with the advanced timer input capture slave mode used above to measure the PWM signal, the implementation method is more complicated, but the implementation method is still recorded. For the implementation method […]

Bypass-penetration testing—teach you step-by-step SQL injection (8)—Bypass posture (how to bypass filtering measures?)

Environment configuration of this section: Database language:MySQL Database information: mysql> use security; Database changed mysql> show tables; + ——————– + | Tables_in_security | + ——————– + | emails | | referers | |uagents| | users | + ——————– + 4 rows in set (0.01 sec) users table information (part): mysql> select * from users; + […]