qaxe+ rev4.1, qaxe rev3.2

QAxe+ Rev 4.1
QAxe Rev 3.2

qaxe+ rev4, qaxe rev3.2

first working qaxe+ rev4 version

rev3.2

• 3mm more space for eg low profile coolers to fit properly
• improved pin1 marking on Us

rev3.1

added 10k pull down on PB2 that is needed for usb bootloader

rev3

Changes:

• added kmr2 boot switch
• fixed misreplaced big capacitors
• removed testpoints that are not needed
• replaced 20k on feedback voltage divider with 22k to increase core voltage by 0.05V (485MHz at ~1.8TH/s with 100% cooling working then)
• STM32L151CC variant that has integrated DFU bootloader

v0.2

Changes to rev1:

• bigger 48pin L1 instead of 32pin L0. Advantage: More stable clock with 8MHz HSE
• second PWM channel for buck converter cooling
• second TMP1075 temperature sensor on the backside of the board under the buck to get buck converter temperature
• real 5V PWM according to Noctua specification (required some changes like 3,3V to 5V buck and additional 3,3V LDO)
• USB-C
• 2 new pin header for LEDs
• optimized power and ground planes