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All the code presented in this post is available on the apollolabs ESP32C3 git repo. Note that if the code on the git repo is slightly different then it means that it was modified to enhance the code quality or accommodate any HAL/Rust updates.
Wokwi Support: Access to hardware components is not always easy (or even cheap for that matter). Additionally, component wiring could become a real headache. Wokwi provides for an awesome alternative to simulate projects in a browser and it also supports ESP with Rust. Wokwi is not your typical simulator though, it is much more useful and closer to embedded hardware than anything I've seen before. Moreover, Wokwi supports many popular commercial components and is in constant improvement by the community. Projects created in Wokwi can also be used as is with the actual hardware. The only difference is that with actual hardware one would need to set up the debug/flash toolchain.
Explore Differences Between Platforms: Between the ESP and other platforms (Ex. STM32) I'm interested in knowing of any differences when it comes to Rust implementation. This could be in documentation or even in using frameworks like embassy. The ESP32 for example does not have an embassy-supported HAL like the STM32 or nRf devices. However, that does not mean that the embassy framework cannot be used with the ESP32. These are things I'd like to explore.