Update roadmap networking and dashboard architecture

2026-06-04 12:46:35 -06:00
parent d8f756ee53
commit e3efdc581f
3 changed files with 355 additions and 0 deletions
@@ -449,3 +449,101 @@ Current required physical wiring:
 - Do not connect 12V directly to any ESP32 or Pico GPIO.
 - Do not power high-current loads directly through the ESP32 relay board.
 - Test relay behavior with a multimeter before connecting expensive loads.
+
+---
+
+## Dash Power Revision
+
+The current preferred dashboard power plan is to send fused 12V over the CAT5/CAT6 run and regulate it in the dash enclosure.
+
+Rear compartment:
+
+    House battery +
+          |
+          +-- 1A or 2A fuse
+          |
+          +---> CAT5/CAT6 blue pair
+
+    House battery -
+          |
+          +---> CAT5/CAT6 green pair
+
+Dash enclosure:
+
+    CAT5/CAT6 blue pair
+          |
+          +---> Buck converter IN+
+
+    CAT5/CAT6 green pair
+          |
+          +---> Buck converter IN-
+
+    Buck converter OUT+ 5V
+          |
+          +---> Pico VSYS
+
+    Buck converter OUT- GND
+          |
+          +---> Pico GND
+
+Reason:
+
+- Less voltage drop concern than sending 5V over the full cable run
+- Clean local 5V regulation at the dashboard
+- Pico/display power stays independent from the ESP32 board regulator
+
+Important:
+
+- Do not connect 12V directly to Pico.
+- Do not connect 5V to Pico 3V3.
+- Use Pico VSYS for 5V input.
+
+---
+
+## CAT5/CAT6 Updated Plan
+
+Recommended cable assignment:
+
+    Orange/White  ESP32 TX  ---> Pico GP1 RX
+    Orange        ESP32 RX  <--- Pico GP0 TX
+
+    Green/White   Ground
+    Green         Ground
+
+    Blue/White    +12V fused dash feed
+    Blue          +12V fused dash feed
+
+    Brown/White   Spare
+    Brown         Spare
+
+Notes:
+
+- Blue pair carries fused 12V to the dash buck converter.
+- Green pair carries ground.
+- Orange pair carries UART.
+- Brown pair remains spare.
+
+---
+
+## Compact Enclosure Direction
+
+Current rear enclosure target:
+
+    ESP32 relay board
+    compact fuse block
+    ground bus
+    CAT6 keystone
+    wiring exits
+
+Because the Starlink Mini and typical 12V fridge are modest loads, the onboard relays may be acceptable for the initial build if properly fused.
+
+Suggested fuse allocation:
+
+    ESP32 controller     2A
+    Pico dashboard       1A or 2A
+    Starlink Mini        7.5A
+    Fridge               10A
+    Spare                optional
+    Spare                optional
+
+External automotive relays remain a good upgrade path for higher-current loads.