Electronics
Power supply:
- 5 to 28 Volt DC IN, 3 Amp DC DC converter for external sensors
- Additional USB C Power In for example for Solarpack
TTL Shifter :
- 3V3 to 5V in both directions, 3 freely assignable
Display:
- Adafruit 2.0" 320x240 Color IPS TFT Display with microSD Card Breakout
- Adafruit GFX etc. Libraries fully compatible
Loudspeaker:
- 4 Watt 4 Ohm Visaton with own amplifier
I2C Port Expander:
- Additional 16 Digital GPIO
Internal relay:
7 A 250 V AC / 15 A 125 V AC / 10 A 30 V DC
Two integrated voltmeters
Screw terminals:
- DC 7 to 28 Volt IN
- UART plus 3V3
- I2C plus 3V3
- 3 Analog plus 5 V
- 10 Digital plus 5 V
- Relay heavy current
All other inputs and outputs on pads in pin grid
Speakers and voltmeter can be disconnected and used as GPIO
Ground pads for switch applications
Mechanics
width 115 mm
height 90 mm
All components incl. MKR solidly fixed with brass screws