Added pinout for the Monarco HAT.

draft/overlay/monarco-hat.md

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+<!--
+---
+name: Monarco HAT
+class: board
+type: adc, dac, io, led, com, rtc, power, motor
+formfactor: HAT
+manufacturer: Monarco Solutions Group / REX Controls s.r.o.
+description: Industrial I/O for the Raspberry Pi
+url: https://monarco.io
+github: https://github.com/monarco
+schematic: http://www.monarco.io/docs/Monarco-HAT-Hardware-Reference-Manual.pdf
+buy: https://www.monarco.io/#buy-monarco-hat
+image: 'monarco-hat.png'
+pincount: 40
+eeprom: yes
+power:
+  '2':
+ground:
+  '6':
+  '9':
+  '14':
+  '20':
+  '25':
+  '30':
+  '34':
+  '39':
+pin:
+  '3':
+    mode: i2c
+  '5':
+    mode: i2c
+  '8':
+    name: RS-485, can be disabled
+    mode: uart
+  '10':
+    name: RS-485, can be disabled
+    mode: uart
+  '19':
+    mode: spi
+  '21':
+    mode: spi
+  '23':
+    mode: spi
+  '24':
+    mode: spi
+  '37':
+    name: ID EEPROM write enable
+    mode: output
+    active: low
+  '38':
+    name: MCU bootloader enable
+    mode: output
+    active: high
+  '40':
+    name: MCU RESETn
+    mode: output
+    active: low
+i2c:
+  '0x18':
+    name: Real Time Clock Module
+    device: MCP79410
+  '0x6f':
+    name: 1-Wire Interface Controller
+    device: DS2482-100
+-->
+#Monarco HAT
+
+The Monarco HAT is is an all-in-one solution for using Raspberry Pi in industrial automation. It provides analog and digital inputs and outputs as well as RS-485 and 1-Wire communication interfaces. In fact, it turns the Raspberry Pi into a PLC or a mini industrial PC (IPC) ready for use in your automation project.
+
+All the inputs and outputs are designed to directly interface standard industrial sensors and devices, eliminating the need for additional hardware. 
+
+##Features
+
+- **Power supply: 10-30 VDC**, powers also the Raspberry Pi
+- **4x digital IN, 3.5-30 VDC**, optical isolation, common GND
+    - 2x counter (pulse/DIR) or 2x encoder (A/B), up to 200 kHz
+    - Counter values retention during power off
+- **4x digital OUT**, open-drain, max 40 VDC, 1 A per channel continuous
+    - All with up to 100 kHz PWM
+    - Short-circuit protection (continuous)
+- **2x analog IN**, 0-10 V / 0-20 mA, 12-bit
+    - Electronic switching of voltage/current sensing mode
+    - Protected against overvoltage and reverse polarity
+    - 500 Hz bandwidth, configurable filter
+- **2x analog OUT**, 0-10 V, 0.5 ms settling time, 12-bit
+- **1x RS-485 bus** with ESD protection
+- **1x 1-Wire bus** with ESD protection
+- **9x LED indicator**, by default mapped as indicators for digital inputs and outputs and system status, user controllable
+- **High quality push-in terminals**, detachable connector
+- **Battery-backed RTC chip** for keeping the track of time
+- **Hardware watchdog** for power-cycling the Raspberry Pi in case of failure
+- Compatible with the **Raspberry Pi 7“ official touchscreen** (onboard connector for powering the display)
+- **EMC tested, CE marked**