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 projects.drogon.net
The GPIO utility | Gordons Projects
| | www.susa.net
Raspberry Pi PCF8563 Real Time Clock (RTC) SusaNET
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| | aschmelyun.com
I invited strangers to message me through a receipt printer - Andrew Schmelyun
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| | Not only did I give internet strangers unrestricted access to send me completely anonymous physical messages, but I also self-hosted the entire site on a Raspberry Pi
| | www.neufeld.newton.ks.us
Arduino I2C Expansion I/O « Keith's Electronics Blog
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| | [AI summary] The user is working on an Arduino project that involves I2C communication with TI PCA9535 and PCA9555 GPIO chips. They provided code examples and discussed issues related to writing data continuously to an I2C DAC. The user also included a blog post about I2C communication with these chips, including code snippets and troubleshooting tips. The main topics covered include I2C communication setup, writing data to EEPROM or DAC, and handling continuous data transmission issues.
| | ciesie.com
Wii Nunchuk as a USB HID controller
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| TL;DR < You can find the source code here. I used the Wii Nunchuk controller to prototype one handed controller for creating computer graphics. I used the Blue Pill board which carries a STM32F1 microcontroller with a built-in USB peripheral. That allowed me to implement it as a true USB HID (Human Interface Device) for the Windows OS. The results were disappointing. My USB HID implementation was poor. I have fixed several important bugs in another project.