Home » Sixteen 0-10V Analog Outputs 8-Layer Stackable HAT for Raspberry Pi
Sixteen 0-10V analog outputs stackable HAT with RS485 for Raspberry Pi GPIO expansion.
Sixteen 0-10V analog outputs 8-layer stackable HAT for Raspberry Pi with green terminal blocks and red DIP switch
Sixteen 0-10V analog outputs 8-layer stackable HAT mounted on a Raspberry Pi with green terminal connectors and DIP switches.
Sixteen 0-10V analog outputs 8-layer stackable HAT mounted on Raspberry Pi with green terminal blocks and red DIP switch
Sixteen 0-10V analog outputs 8-layer stackable HAT for Raspberry Pi with green connectors and DIP switches.
Sixteen 0-10V Analog Outputs 8-layer stackable HAT circuit board for Raspberry Pi with multiple integrated chips and connectors.
Sixteen 0-10V Analog Outpus 8-Layer Stackable HAT for Raspberry Pi
Sixteen 0-10V analog outputs stackable HAT with RS485 for Raspberry Pi GPIO expansion.
Sixteen 0-10V analog outputs 8-layer stackable HAT for Raspberry Pi with green terminal blocks and red DIP switch
Sixteen 0-10V analog outputs 8-layer stackable HAT mounted on a Raspberry Pi with green terminal connectors and DIP switches.
Sixteen 0-10V analog outputs 8-layer stackable HAT mounted on Raspberry Pi with green terminal blocks and red DIP switch
Sixteen 0-10V analog outputs 8-layer stackable HAT for Raspberry Pi with green connectors and DIP switches.
Sixteen 0-10V Analog Outputs 8-layer stackable HAT circuit board for Raspberry Pi with multiple integrated chips and connectors.
Sixteen 0-10V Analog Outpus 8-Layer Stackable HAT for Raspberry Pi
SKU: SM-I-027

Sixteen 0-10V Analog Outputs 8-Layer Stackable HAT for Raspberry Pi

Sixteen 14 bit PWM 0-10V analog outputs; 12-30VDC/24VAC power supply; RS485, Hardware Watchdog.

In stock
$95.00

Overview

The Sixteen 0-10V Analog Outputs HAT delivers sixteen precision voltage outputs for controlling dimmers, actuators, and drives in building and industrial automation applications. It includes RS485/MODBUS for stand-alone or networked operation, and a wide-range power supply that also powers the Raspberry Pi.

  • Sixteen 14-bit 0-10V analog outputs
  • Wide range 12–30VDC/24VAC power supply, provides 5V/3A to Raspberry Pi
  • Native RS485/MODBUS interface — stand-alone operation without Raspberry Pi
  • Programmable status LEDs on each output
  • Up to 8 cards of each type can be stacked and mixed with other Sequent HATs for virtually unlimited I/O expansion
  • Works with any Raspberry Pi from Zero to 5

Works with Open Automation Software

Compatible with widely used tools for control, monitoring, and system integration.

Command Line Python Home Assistant

INTERFACES AND I/O

I/O's Communication Software Integration
• Sixteen 14-bit 0-10V Analog Outputs • I2C Port to Raspberry Pi • Command Line
• Sixteen Programmable Status LEDs • RS485/MODBUS Port • Python Library
• On-board Push Button • Home Assistant
• MODBUS interface
Other Features
• Wide range 12–30VDC/24VAC power supply provides 5V/3A to Raspberry Pi
• Stand-alone operation via RS485/MODBUS (no Raspberry Pi required)
• Pluggable Connectors 26–16 AWG wires • On Board Hardware Watchdog and fuse
• Eight Level Stackable • Ambient operating temperature: −40°C to 85°C

DESCRIPTION

The Sixteen 0-10V Analog Outputs HAT provides sixteen precision voltage outputs ideal for controlling 0-10V dimmers, proportional actuators, and drives in building and industrial automation systems.

0–10 V Analog Outputs

Sixteen 14-bit PWM 0-10V outputs control proportional actuators, dimmers, and drives. Factory accuracy of 1% can be improved to 0.1% through field calibration.

RS485 / MODBUS

The RS485 port is accessible by the onboard processor or directly by the Raspberry Pi, configured via DIP switches. In MODBUS RTU slave mode, all outputs can be controlled by any MODBUS master — PLC, SCADA, or HMI — without a Raspberry Pi.

Status LEDs

A flashing power LED confirms the local processor is active. Sixteen programmable LEDs can be individually configured to illuminate when an output exceeds a threshold value.

Hardware Watchdog

The hardware watchdog automatically power-cycles the Raspberry Pi if the software becomes unresponsive, ensuring continuous operation in unattended deployments.

Push Button

An onboard push button can be used for manual input or to trigger custom actions in any user application.

Power Supply

Wide-range 12–30VDC/24VAC input provides 5V/3A to the Raspberry Pi over the GPIO bus, eliminating the need for a separate Raspberry Pi power supply.

TECHNICAL DETAILS

CARD LAYOUT

Sixteen 0-10V Analog Outputs HAT board layout showing connector positions and GPIO header for Raspberry Pi

MECHANICAL SPECIFICATIONS

Sixteen 0-10V Analog Outputs HAT Mechanical Specifications

DIP SWITCH AND STACKING

The onboard six-position DIP switch configures both the stack address and the RS485 port behavior. Cards of different Sequent HAT types can be freely mixed in the same stack.

Switch Name Function
ID0 Stack ID bit 0 Binary stack address bit 0 (LSB) — sets card level 0–7
ID1 Stack ID bit 1 Binary stack address bit 1
ID2 Stack ID bit 2 Binary stack address bit 2 (MSB)
RX RS485 RX select ON: Raspberry Pi receives RS485 directly
TX RS485 TX select ON: Raspberry Pi drives RS485 directly
TERM RS485 termination Enable on the last card in an RS485 chain to prevent signal reflections

ELECTRICAL SPECIFICATIONS

Power
Power supply 3.5mm Pluggable Connector, 12–30VDC/24VAC / 1A
Power consumption 50 mA @ +24V
Raspberry Pi supply 5V / 3A
Onboard resettable fuse 1A
0–10 V Outputs
Minimum Output Load 1 KΩ
Resolution 14 bits
Full scale linearity 0.1%

POWER REQUIREMENTS

Power supply: The card requires an external 12–30VDC or 24VAC power supply connected to its own pluggable power connector. The card supplies 5V and up to 3A continuous to the Raspberry Pi over the GPIO bus, eliminating the need for a separate Raspberry Pi power supply. Operating current is 50mA at 24V.

PLUGGABLE CONNECTORS

All I/Os connect to heavy-duty 3.5mm pitch pluggable screw terminal connectors rated at 8A, accepting wire gauges from 26 to 16 AWG. Connectors can be unplugged from the board for convenient field wiring and debugging without disturbing the rest of the installation.

FIELD CALIBRATION

All analog outputs are factory-calibrated.
However, firmware commands allow the user to recalibrate the board or perform higher-precision calibration if required.

Calibration is performed using a two-point method. The selected calibration points should be placed at least 5V apart within the output range.

Output Calibration

To calibrate the outputs, the user must:

  1. Issue a command to set the output to a desired value.
  2. Measure the actual output using a calibrated instrument.
  3. Issue the corresponding calibration command to store the measured value.

Storage and Reset

Calibration values are stored in non-volatile flash memory, and the output transfer curve is assumed to be linear.

If an incorrect command or value is entered during calibration, a RESET command can restore all channels in the selected group to their factory calibration values. After a reset, the calibration procedure can be repeated.

The following firmware commands are available for performing calibration:

CALIBRATE 0-10V OUTPUTS:              16uout <id> uoutcal <channel> <value>
RESET CALIBRATION OF 0-10V OUTPUTS:   16uout <id> uoutcalrst <channel>

COMMUNICATION INTERFACES

RS485 / MODBUS

The Sixteen 0-10V Analog Outputs HAT includes a standard RS-485 transceiver that can be accessed either by the onboard processor or by the Raspberry Pi. The operating mode is configured using the TX and RX switches on the SW1 DIP switch.

When TX and RX are set to ON, the Raspberry Pi communicates directly with any device that has an RS-485 interface. In this mode the card functions as a passive bridge, implementing only the hardware signal levels required by the RS-485 protocol. To use this configuration, the onboard processor must first release control of the RS-485 bus:

~$ 16uout 0 rs485wr 0 0 0 0 0

When TX and RX are set to OFF, the card operates as a MODBUS RTU slave. Any MODBUS master — PLC, SCADA, or HMI — can read all inputs and control all outputs using standard MODBUS commands, with no Raspberry Pi required. A full list of supported MODBUS registers is available on GitHub.

In both modes, the onboard processor must be configured to either release or control the RS-485 signals accordingly. Refer to the command-line help for further details.

HARDWARE WATCHDOG

The Sixteen 0-10V Analog Outputs HAT includes a hardware watchdog that ensures your system automatically recovers if the Raspberry Pi software becomes unresponsive. The watchdog is disabled at power-up and activates after it receives the first reset command from the Raspberry Pi.

Watchdog Parameters
Initial timeout period Configurable — allows time for Raspberry Pi to boot and start the application
Running timeout period Configurable — normal operating timeout
Off period Configurable — duration the Raspberry Pi power is cut when timeout triggers
Reset counter Stored in non-volatile flash; can be read or cleared at any time

For a full list of watchdog commands, run: 16uout -h

COMPATIBILITY

Interface I2C
GPIO used GPIO2 (SDA), GPIO3 (SCL) — 2 pins only; remaining 24 GPIO pins stay free
Max stack 8 cards of each type; different Sequent HATs can be freely mixed with virtually no upper limit on total I/O
Compatible with All Raspberry Pi versions from Zero to 5 (40-pin GPIO header)

FIRMWARE UPDATE

The onboard microcontroller firmware can be updated in the field. The update tool downloads the latest firmware from Sequent Microsystems' servers and flashes it to the board over I2C.

WARNING: Stop all processes that access the card (Python scripts, cron jobs) before starting a firmware update. Accessing the card during an update may corrupt the firmware.

Running the Update

~$ cd ~/16uout-rpi/update/

~/16uout-rpi/update$ ./update <id>

Replace <id> with the board stack address (0-7). Full instructions including recovery procedures are available at:

https://github.com/SequentMicrosystems/16uout-rpi/tree/master/update/README.md

DOWNLOADS

User's Guide (PDF) Schematics (PDF) CAD Software & Integrations
User's Guide V1.1 Schematic V1.1 3D Printing Enclosure Command Line
User's Guide V2.0 Schematic V2.0 3D STEP Model V1.1 Python Library
3D STEP Model V2.0 Home Assistant
MODBUS interface

WHAT'S INCLUDED

When you purchase the card you will receive the following items:

1. Sixteen 0-10V Analog Outputs HAT for Raspberry Pi
Sixteen 0-10V Analog Outputs HAT for Raspberry Pi
2. Mounting Hardware
Mounting hardware for Sixteen 0-10V Analog Outputs HAT for Raspberry Pi
  • Four M2.5×18mm male-female brass standoffs
  • Four M2.5×5mm brass screws
  • Four M2.5 brass nuts
3. Connector Plugs for all Outputs
Connector plugs for Sixteen 0-10V Analog Outputs HAT for Raspberry Pi
  • Mating connector plugs for all outputs and power connections

QUICK START

  1. Plug your card on top of your Raspberry Pi and power up the system.
  2. Enable I2C communication on Raspberry Pi using raspi-config.
  3. Install the software from GitHub:
    ~$ git clone https://github.com/SequentMicrosystems/16uout-rpi.git
    ~$ cd /home/pi/16uout-rpi
    ~/16uout-rpi$ sudo make install
    ~/16uout-rpi$ 16uout

The program will respond with a list of available commands. To read more about the CLI, please refer to the README file. If you would rather use a different platform, you can access the same functionality through dedicated, ready-to-use integrations in the Downloads tab above.

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