ADC analog-to-digital conversion + experiment

ADC overview: Analog to digital converter. Refers to an Analog-to-Digital Converter or an Analog-to-Digital Converter. It refers to the device that converts the analog signal of continuous variable into discrete digital signal. A typical analog-to-digital converter converts an analog signal into a digital signal representing a certain proporti ...

Posted on Sun, 19 Sep 2021 20:03:44 -0400 by Nhoj

Single phase current controller

Single phase current controller preface In order to protect the load and system power supply, it is sometimes necessary to limit the load current. When the load current exceeds a certain value, disconnect the load for power supply, and then supply power after recovery. 1, Overview    For these products with s ...

Posted on Sat, 18 Sep 2021 11:37:52 -0400 by Chips

Platform device driver architecture - concept, platform bus, platform driver, platform device

Reference: I.MX6U embedded Linux Driver Development Guide of Zhengyuan Electronics 1. platform device driver architecture          Starting from Linux 2.6, Linux has added a set of driver management and registration mechanism - platform bus driver model. Platform bus is a virtual bus (only one), which h ...

Posted on Fri, 17 Sep 2021 11:25:46 -0400 by kevin1

I2C test of NVIDIA Jetson

0 background Jetson development board has I2C interface. This paper introduces the use of this interface. Taking Jetson TX2 as an example, the methods of other devices are similar, mainly due to the difference of hardware interface 1 hardware connection Pass< Jetson TX1-TX2 Developer Kit Carrier Board Specification  > It can be ...

Posted on Sun, 05 Sep 2021 18:47:52 -0400 by ninevolt1

Vibration alarm (vehicle alarm) based on ESP8266 and 51 single chip microcomputer (simple)

Vibration alarm (vehicle alarm) based on ESP8266 and 51 single chip microcomputer preface The author is a college student of Guigong communication engineering. When designing the course, he wants to make an alarm that can remind the message on the mobile phone. It has made a breakthrough in the traditional audible and visual alarm, and can pu ...

Posted on Sun, 05 Sep 2021 02:30:37 -0400 by 2paulm

Verify the "IP address or domain name" obtained from the outside to avoid command injection

[question:] Because the parameters of the IP address or domain name are obtained through the configuration file, and when the client connection broker is abnormal, it is necessary to Ping the IP through the system() system call and record the results in the log; However, if the command executed by the system() function is abnormally modified, ...

Posted on Sat, 04 Sep 2021 18:59:19 -0400 by IndianaRogers

v3S drive gt911 touch

1, Modify device tree Add pio node in sun8i-v3s-licheepi-zero-dock.dts (in fact, it's OK not to add it after testing, as will be described later) &pio{ /* Key */ key_pins:key_pins@0{ pins = "PG2"; function = "gpio_in"; bias-pull-up; }; /* Touch reset */ ts_reset_pin: ts_reset_pin@0 { pins = "PB3"; ...

Posted on Wed, 01 Sep 2021 20:24:07 -0400 by JJohnsenDK