That is awesome. thank you, open sourcing this is an amazing commitment. I cant wait to buy one.In the latest engineering sample, we have implemented two separate MCUs: one dedicated to keyboard control and another under consideration for power cutoff and screen brightness management. The initial prototype relied on the CM5's default power management, which resulted in battery drain (approximately one day in shutdown). To address this, we have decided to develop our own power management solution to ensure a true low-power state when the device is powered off.
For sleep mode functionality, our current approach involves disabling all non-essential peripherals when the lid is closed (detected via a Hall sensor). However, implementing a full sleep mode may require further collaboration with the Raspberry Pi team or community in the future.
We are also evaluating the RP2350 as a potential replacement for the secondary MCU. While it is overpowered solution for power and brightness control, its additional capabilities could prove useful for future enhancements. We are open to suggestions what else it can be use for as long as it does not significantly increase our engineering work.
Looking ahead, we may adopt the RP2350 for keyboard control in a future revision, similar to the implementation in the Pi 500. For now, however, we want to focus our small engineering team on what actually matters.
We plan to opensource this project and would release the schematics at a later stage.
Statistics: Posted by EdwinJ85 — Thu Mar 27, 2025 11:44 am