pcb

Changes

Front panel

v0.3

• Button holes enlarged to 8.1mm for LP1OA1Ax illuminated buttons

v0.2

• Left most 3.5mm socket renamed from "Serial" to "Aux"
• 4x holes for potentiometers enlarged so RK09L1140A2U fits without needing to manually enlarge the hole
• Project updated to KiCad 6

v0.1

First public version

FrontPanelControls

v0.2

• Requires firmware version >=1.8
• Now mostly SMD aimed at JLCPCB's SMT assembly service
• 4x front panel buttons are now connected to this board, not the main board
• ADC changed from PCF8591 (EoL) to ADS1115
• I/O expander changed from PCF8574 to TCA9534
• Allows use of illuminated buttons (LP1OA1Ax) controlled by TLC59108
• Project updated to KiCad 6

v0.1

First public version

MainBoard

v0.2

First public version

OutputModule

v0.2

• Fixed snubber. Swapped diode for diode + TVS diode (thanks to Onwrikbaar for suggestion)
• Might now also work with larger 42TU200 transformers (currently out of stock, so unable to test)
• Increased resistor values for status LEDs to reduce brightness
• Swapped 4x 100uF through hole electrolytic capacitors for 4x 220uF tantalum capacitors
• Project updated to KiCad 6

v0.1

First public version

AudioInput

v0.3

First public version