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Andino X1

Andino X1 with Raspberry Pi on a DIN-Rail
Andino X1 with Raspberry Pi in the control cabinet


The Andino X1 is a microcontroller board for the Raspberry Pi in a DIN-rail housing for installation in a control cabinet. It is used to adapt digital inputs and outputs for a voltage of 24 V. The X1 has its own microcontroller for precise signal preprocessing and adaptation of signal generators and actuators. It also contains a Raspberry Pi (2/3). The inputs and outputs as well as the power supply of the Pi are optimally protected. Communication between the microcontroller and the Pi takes place via the UART interface.

The Andino X1 offers the following advantages:

  • The sensitive GPIO of the Raspberry Pi are protected.
  • Fast signals can be precisely detected by the microcontroller.
  • Actuators and sensors can be electrically connected to the Raspberry Pi.
  • It provides an industrial power supply for the Raspberry Pi.
  • Customized adapters from the Raspberry Pi GPIO or the micro controller IO can be connected electrically to terminals.
  • Provides mounting on a DIN rail for installation in manifolds.

Application examples

  • Data collection on production machines
  • Collect and count Number of items, products
  • Downtime detection
  • Create Performance indicators Creation such as OEE, GAE and utilization
  • Data collection at environmental monitoring stations
  • Telecontrol and protocol converters
  • Central in the house automation
  • IoT nodes
Arduino and Raspberry Pi Communication

Signal preprocessing

To accurately capture fast digital signals, the Andino X1 offers one Microcontroller for data preprocessing. Pin changes at the digital inputs are detected, debounced and counted by the microcontroller. The payment amounts are then transferred to the Raspberry via UART (/ dev / ttyAMA0). Thus, the Raspberry is not concerned with the real-time outputs and is able to accurately capture the signals at high frequency. The interface between Raspberry Pi and the ATMega is kept as simple as possible and is based on simple text commands and text messages. The firmware of the ATMega is available as source code and can be developed and changed by means of the Arduino IDE on a PC the Andino X1 will be charged via USB.

Arduino Communication

Raspberry Pi compatible

The 40-pin connector is compatible with Raspberry Pi 3

Asus Tinker Board compatible

The 40-pin connector is compatible with the Asus Tinker Board

Arduino compatible

The Atmel microcontroller of the Andino X1 comes with an Arduino-compatible bootloader. The combination of Arduino and Raspberry Pi on the Andino X1 is ideally suited for use in home automation and sensor technology, as well as in more demanding industrial automation applications. The strengths of both boards complement each other perfectly. While the single-board computer Raspberry Pi can perform complex tasks (eg hosting of database and WebServer) as a full-value computer, the Arduino microcontroller can take care of the fast signal pre-processing.

The Atmel Controller communicates via UART with the Pi. Programmable is the X1 with the Arduino IDE via USB from a PC or from a Raspberry (firmware update in the field).

HowTo: How to setup the X1 and Program with the Arduino IDE

HowTo: The standard Firmware / Example

Integrated power supply

The X1 board has a 9-24V wide-range DC input with reverse polarity protection. Powerful, reliable, stable power supply: 5 Volt, 2.6 Amp – enough power for the Raspberry, your USB hardware and customer-specific adaptation. The integrated EMC protection circuits protect the Pi from voltage surges and current surges on the supply line.

8 Bit Microcontroller

Programmable 8-bit microcontroller (Atmega 168 8Mhz) for adapting the inputs and outputs. Accurate and reliable detection of digital and analog signals.

Galvanically isolated

The X1 board has two electrically isolated inputs (up to 5kV isolated) as well as two relay outputs for 42 volts and 1 amp. The IO is controlled by a microcontroller. Further GPIO of the Raspberry Pi as well as IO of the Microcontroller are led on an internal pin header. This makes it possible to bring own adaptations to the screw terminals.


Via the SPI and the I2C interface of the Raspberry Pi, further hardware extensions can be connected and led to the free screw terminals. Thus, a stable, control cabinet-compatible wiring is possible.

Further Interfaces:

  • RS485 / RS422 (2/4 lines) (planed for Q1/2017)
  • M-Bus (Meter Bus)
  • Analog Input (e.g. via Microchip MCP3008)
  • Digital Input

Realtime Clock (RTC)

The integrated, battery-buffered RTC provides the correct time even if no NTP (time) server is available. The high-precision time chip DS3231 from Dallas Semiconductors is used. Due to the internal temperature compensation of the oscillator, the chip achieves a very high accuracy of ± 2ppm at 0 ° C to + 40 ° C.

Install the RTC

Made in Germany

Designed, developed and manufactured in Germany.

This Application shows the Andino X1 together with the Andino UPS in a electric cabinet.

The UPS ensures the X1 can bridge smaller power drops, and in case the power fails for longer, that the Raspberry shutdown correctly.

Andino X1 with Raspberry Pi and USV in the control cabinet

Tests and Standards

Tested standards - EMC

The Andino X1 was tested for its electromagnetic compatibility (EMV) together with a Raspberry Pi in its DIN rail housing.

The tests were based on the immunity to electrostatic discharge, high-frequency electromagnetic fields, fast transient electrical disturbances (burst), impulse voltages, conducted disturbances – induced by high-frequency fields and magnetic fields with energy-related frequencies.

The Andino X1 has mastered these tests not only with flying colors, but also meets the more stringent limits. This underlines its industrial suitability and brings the Raspberry Pi into the industrial environment.

Download EMC Report

The tested standards in detail

Radiated field strength / conducted emissions DIN EN 55022: 2011 according to VDE 0875 part 22 of 12.2011 Emitted interference: Class B (residential area) (tighter limits) Immunity: class A (industrial area). (Higher irradiance)

Immunity ESD DIN EN 61000-4-2: 2009 according to VDE 0847 part 4-2 of 12.2009

Immunity radiated electromagnetic fields DIN EN 61000-4-3: 2006+A1:2008+ A2: 2010 according to VDE 0847 part 4-3 of 04.2011

Immunity Burst DIN EN 61000-4-4: 2012 according to VDE 0847 part 4-4 of 04.2013

Immunity Surge DIN EN 61000-4-5: 1995 +A1: 2014 according to VDE 0847 part 4-5 of 03.2015

Immunity high frequent uncoupled emission DIN EN 61000-4-6: 2014 according to VDE 0847 part 4-6 of 08.2014

Immunity magnetic fields DIN EN 61000-4-8: 2010 according to VDE 0847 part 4-8 of 11.2010

Why is the Andino X1 not VDE certified?

The relevant EMC standards have already been met.

"The verification of your submitted documents has shown that the product described could actually only be a VDE certification according to the EMC standards mentioned. If you are interested in the EMV tests, please do not hesitate to contact us."

VDE Prüf- und Zertifizierungsinstitut GmbH

Technical infos and downloads on GitHub