PCB Review: Thermostat PCB

[Peter_G]

I'm looking for some feedback on a thermostat PCB layout I've put together.  I'm a mechanical engineer so all my PCB design knowledge is self-taught and in addition to this being the most compact board I've done, it's the first I've dealt with anything AC on my boards, so I expect there's a lot to learn here.  The AC in this case is the 24V line from my furnace which I am using for power and to enable the heat/ac/fan via some relays.

• The power supply design is copied from the RT6362GSP datasheet.
• The temperature sensor layout is copied from the Sparkfun TMP117 breakout board.
• The MCU power design comes from the STM32U585CI datasheet.
• The display is going to be a Pervasive Displays 1.97" EPD, driven via their EXT3-1 board.
• The "radio" plug is for future plans to add connection to an RFM69HCW-based board (915MHz) for hooking into a broader home automation system I am conceiving.

I'm planning on ordering through JLCPCB and have set up my DRC via their constraints which it passes.  I've attached the schematic and layout as well as KiCAD project in case anyone wants to look at that as well.

Many thanks to anyone who wants to share feedback!