LailaTheElf/KlipperToolboard
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STM32v1

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Pontus Borg
2020-03-29 21:15:19 +02:00
parent 5da3691228
commit 2b6cf3a23a
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README.md
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@@ -6,23 +6,18 @@ A very small 3D printer board for use on a toolhead.
Features:
* TMC2209 driver
* ATmega168
* STM32F103C8T6
* Two MOSFET drivers fans
* One big MOSFET driver for a hotend heater
* Thermistor input
* One servo
* One endstop
Main power is 12-24V
It should be fed from the mainboard with 12-24V, 5V, GND, UART RX and UART TX.
Communication with host is done via micro USB, small electronics is powered though that
Possible issues:
* Is the cooling for the TMC2209 adequate?
* How well will the UART cmos/ttl level survive? Noise?
* Does it work
Alternative design options:
* Use an ARM instead? STM32F030
* Create a local 5V/3.3V instead? Switch regulator + LDO. Only the servo needs 5V
* USB-c would be neat, it could provide all the power and signalling needed