V4.0.1

• Change layout SAMD21 and RN2483.

• Remove jumper-switches for optocoupler-bypass for JSN and RN2483.

• Change package of MIC5201 3.3V and 5.0V.

• Change SWD header.

V4.0.2

• Fix for MOSFET circuitry of the JSN psu.

• Add analog inputs AIN0 and AIN1.

• Reduce padsize of electrolytic capacitors.

• Added shunt resistors for measuring subsystems power consumption.

• Align vias.

• Added pin definitions to all header pins.

• Improved traces of RN2483 optocoupler.

• Change RN2483 LED from GPIO pin to RN2483-VCC

V4.0.3 (Latest)

• Fix for 5V (JSN) MOSFET circuitry for not switching off when switched with a 3.3V high signal of the SAMD21. Added an N-Channel MOSFET.

• Remove DIO1

• Change DIO0 to AIN0. Now there is AIN0-2.

• Change MIC5201 to AP7073 (voltage regulator) because of too high quiescent current.

• 5V (JSN) MOSFET circuitry now switches before the 5V voltage regulator. This reduces (quiescent) current consumption.

• Change RN2483 footprint back to the original. It turns out that the changed footprint makes it very hard so solder the chip.

• Removed the RTC chip. Can later be included as an (yet to be implemented) modular sensor input board.

V4.0.4

• Fix the SWD connector pinout to be the same as Black Magic Probe SWD header.