在这个项目中，将向您展示如何设置和编程您自己的考勤系统，该系统使用RC522 RFID reader。 整个项目中，将展示如何组合使用RFID RC522阅读器和16×2 LCD的电路。 首先展示将这些电路连接到Raspberry Pi的GPIO引脚所需的所有步骤。还将向您展示如何测试每个电路，使其 ...

Certain PIN codes are blacklisted on iOS. For example, iOS recommends you don't use 0000 or 0011, but doesn't have a problem with 0001 or 1001. But what combination of numbers are blacklisted, and ...

The Raspberry Pi has become a versatile platform for embedded engineers, offering compact computing power and an extensive ...

Raspberry Pi owners looking to use higher voltages with their mini PC, might be interested in this new opto-isolator board called the Opto-pi which has been specifically designed to be used with the ...

A few days ago we reported on a new product for owners of the Raspberry Pi Zero, a set of solderless header pins that had a novel installation method involving a hammer. We were skeptical that they ...

How much can you cram into a 2.6 in x 1.2 in circuit board? You'd presume not much, but the Raspberry Foundation is trying to prove you wrong. First, it added built-in Wi-Fi to its teeny Raspberry Pi ...

Raspberry Pi enthusiasts wishing that the Raspberry Pi Zero was available with professionally soldered header pins in place, will be pleased to know that the Raspberry Pi Foundation has today ...

You may have noticed, we’re fans of the Raspberry Pi here at Hackaday. Hardly a day goes by that we don’t feature a hack that uses a Pi somewhere in the build. As useful as the Pis are, they aren’t ...

A design kit for a Raspberry Pi-based motor controller board uses the module’s GPIO pins and is intended for starter-level design. The Ryanteck Raspberry Pi Motor Controller Board (RTK-000-001) is ...

This product is featured in EDN's Hot 100 products of 2014. See all 100 here. An update of the Raspberry Pi Model B – called the Raspberry Pi Model B+ – incorporate numerous small improvements that ...