Changes

K-Scale CANdaddy

33 bytes added, 28 May

no edit summary

=Features = # USB-C + Battery compatibility# Able === Voltage === * Load sharing between USB and battery = Central Components = == MCU === STM32 =

* STM32

** Programming mode button (boot / reset)

Used:

Justification: 512 kB of flash memory, unit price at $3, powerful enough to run heavy programs

~~=== USB ===~~

* adsfasdfasdf== Buttons + Debouncer ==

~~=== Buttons ===~~ * Button ~~debouncer~~Debouncer

** TODO: Add the IC name

=== LCD ===

=== PCF2518 ===

* How do we connect I2C chip to the LCD screen?

=== Battery Charger ===

=== MCP 2515 ===

~~=== Github access ===~~

== CAN Communication ==== ~~CAN~~ = MCP2515 ===

* How to get supply-side VCC without having it on the bus (from supply-side GND)?

* What do we do if supply-side GND is missing?

~~=== Voltage ===~~

* Load sharing between USB and battery

=Other === Questions ===

# How does the switching regulator mechanism work?

=== Notes ===

* Need to figure out the interface for the SPI lines using MCP2515

** Pros if successful:

*** Reduces amount of wiring for STM32, requires just one SPI bus with a bunch of easily programmable chip selects

** Cons: Need to understand the interface for the MCP2515. Need to confirm how interrupts and timing works.

49

edits