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blog.cetinich.net | ||
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arnon.dk
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| | | | | For a small project, I wanted to print some graphic receipts from a Raspberry Pi. I bought the cheapest one I could find on Amazon, the POS-5890K. (I paid ?43 on Amazon.de). It's not a very high quality device, but the price was hard to argue with. However, printing to it was a bit more [...] | |
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danielmangum.com
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| | | | | The ESP32-S3 is a popular microcontroller (MCU) for a variety of reasons, such as its support for external pseudostatic RAM (PSRAM). One of its lesser known features is its Universal Serial Bus (USB) On-The-Go (OTG) controller. The previously released ESP32-S2, as well as the new ESP32-P4, also have USB OTG support, with the latter having two controllers. USB OTG devices can act as a device or as a host. This is a popular feature for smartphones, which, when attached to a laptop or desktop should act as a device, but may want to act as a host for some peripherals, such as a keyboard, that may be attached to it. | |
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ciesie.com
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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. | |
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neilzone.co.uk
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| | | Neil Brown's personal blog. | ||
