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The ComfilePi is an industrial touchscreen panel PC built around the Raspberry Pi Compute Module.

Warnings and Precautions

What is the Raspberry Pi?

The Raspberry Pi is a revolutionary, compact single board computer made in the United Kingdom by the Raspberry Pi Foundation. It typically runs the Linux operating system.

In addition to the credit-card-sized Raspberry Pi single-board computers, the Raspberry Pi Foundation also produces the Raspberry Pi Compute Module for industrial solutions.

What is the ComfilePi?

The ComfilePi is an industrial panel PC built around the Raspberry Pi Compute Module, and then augmented with additional hardware and features for industrial automation solutions (e.g. touch screen, real-time clock, RS-485, etc.).

The Raspberry Pi Compute Module is UL Recognized, and most ComfilePi panel PCs are UL Listed.

ComfilePi Features

CPi-A070WR CPi-B070WR CPi-A102WR CPi-A101WR CPi-A150WR CPi-C070WR4C
SoC Broadcom BCM2837B0 Quad-Core
Cortex-A53 (ARMv8) 64-bit 1.2GHz
(Compute Module 3 PLUS)
Broadcom BCM2711 Quad-Core
Cortex-A72 (ARMv8) 64-bit 1.5GHz
(Compute Module 4)
Thermal Management Internal Heatsink (3.5g) External Heatsink (41g) Internal Heatsink (3.5g) External Heatsink (41g)
Size & Resolution 7“
Aspect Ratio 5:4 128:75 4:3 5:4
Default LCD Option
Colors 262K 16.7M 262K
Contrast Ratio 500:1 300:1 600:1 800:1 500:1
Brightness 400cd/m2 350cd/m2 250cd/m2 420cd/m2 400cd/m2
Backlight Lifetime >20,000 Hours >30,000 Hours >20,000 Hours
6W at idle
9W under load.
10W at idle
13W under load.
10W at idle
13W under load.
21W at idle
24W under load.
6W at idle
9W under load.
Sunlight Readable LCD Option
Colors 262K N/A 262K
Contrast Ratio 500:1 N/A 500:1
Brightness 1000cd/m2 N/A 1000cd/m2
Backlight Lifetime >50,000 hours N/A >50,000 hours
7.2W at idle
10.2W under load
N/A 12~24VDC
7.2W at idle
10.2W under load
Touchscreen Pressure-sensitive (Resistive Film Type)
Housing Flame retardant ABS
IP65 Water-Resistant Front Panel
Yes (Battery rated for 5 years)
GPIO 22 via a 40-pin header socket
20 via a 26-pin header socket
USB Host Ports USB 2.0 Type A x 3
USB Device Ports USB Type A x 1
(For eMMC)
USB Boot No Yes
Ethernet Port RJ45 10/100 Mpbs
RS-232C Ports 1 - COM0 /dev/serial0 1 - COM0 /dev/serial0
2 Additional UARTS are available through the GPIO header
RS-485 Ports 1 - COM1 /dev/serial1 (*) 1 - COM1 /dev/serial1
I2C Ports 1 1
3 additional I2C ports via the GPIO header
SPI Ports 1 via the GPIO header 2 via the GPIO header
Buzzer Yes
Audio Output 1/8” Stereo Output Jack
WiFi Yes (with USB dongle)
Operating System Linux (Raspberry Pi OS) only
(Android and Windows 10 IOT are not supported)
Operating temperature 0°C ~ 60°C
Storage temperature -20°C ~ 80°C
Regulatory Compliance UL, CE, KCC, IP65 CE, KCC, IP65
Weight 0.57kg 0.61kg 0.92kg 0.92kg 3.26kg 0.61kg
Dimensions Details Details Details Details Details
Buy Buy Buy Buy Buy Buy

(*) COM1 (/dev/serial1) on the ComfilePi A & B series (CPi-A & CPi-B) utilizes the Raspberry Pi's mini UART. The mini UART has a few limitations (e.g. no parity bit). For more information please see the Raspberry Pi documentation. The ComfilePi C series (CPi-C) does not have such limitations.

Hardware Revisions

Operating System

For models without an SD card with a slightly modified Raspberry Pi OS Linux distribution is included with each purchase. You can always re-image your SD card by downloading our Raspberry Pi OS image and following the instructions there.

For models with an eMMC, the same Raspberry Pi OS Linux distribution will come preinstalled. To re-flash the eMMC, obtain a USB-A-to-USB-A cable, connect your PC to the ComfilePi's dedicated eMMC programming USB device port, download our Raspberry Pi OS image, and then follow the Raspberry Pi eMMC flashing instructions.

Other operating systems may work, or may partially work, but we only provide support for the operating system linked above. If you run into any problems, please be sure you are using our latest operating system image.

The OS received from the Raspberry official site cannot be used.

SD Cards

IO Board Accessories

CP-IO22 CP-IO19R CP-IO22-A4-2 CP-IO13-4C
Digital Inputs 11 @ 12~24VDC 11 @ 12~24VDC 11 @ 12~24VDC 7 @ 12~24VDC
Digital Outputs 11 @ 30VDC Max 8 Relays 11 @ 30VDC Max 7 @ 30VDC Max
Serial Ports 2x RS-232C
Analog Inputs 4 @ -5 ~ +5VDC
Analog Outputs 2 @ 0~5VDC
More Information Details Details Details Details
Supports ComfilePi A/B Series ComfilePi C Series
Buy Buy Buy Buy

IO Features

GPIO Header

The 5V pins can supply a maximum current of 1A. The 3.3V pins can supply a maximum current of 700mA. If both 5V and 3.3V rail pins are used simultaneously, their total power should be kept below 5 watts.

The panel PC's RTC is connected to I2C1, so those pins assigned to I2C1 should not be reconfigured.

CPi-A & CPi-B

The ComfilePi A & B series panel PCs (CPi-A & CPi-B) have a 40-pin header socket on the rear panel that is almost the same pinout as the Raspberry Pi GPIO header.

The GPIO pins are exposed through a transparent (3.3V ←→ 3.3V) level shifter for ESD protection. For electrical characteristics please see the level shifter's data sheet : TXS0108E. Please note this isolation circuit renders the Raspberry Pi Compute Module's internal pull-up/-down resistors ineffective. To have pull-up/-down behavior an external pull-up-down resistor must be added externally, or the pin must be explicitly driven high or low.

GPIO14 and GPIO15 are not exposed through the 40-pin header as they are routed to the RS-232 port (COM0) instead.

GPIO0 and GPIO1 are not exposed through the 40-in header.


The ComfilePi C series panel PCs (CPi-C) have a 26-pin header socket on the rear panel with the following pinout.

See pp.8 of the Compute Module 4 datasheet for more information.

The GPIO pins are not exposed through a level shifter like the CPi-A and CPi-B panel PCs, so, with the exception of GPIO45, the internal pull-up/-down resistors can be utilized. GPIO45 has an internal 1.8kohm pullup resistor to 3.3V because it is initially used for I2C (See Table 6 of the Compute Module 4 datasheet).

Underside IO Ports

The underside of the ComfilePi exposes 12~24VDC power input, 1 RS-232 serial port, 1 RS-485 serial port, 3 USB 2.0 ports, an I2C port, 5V power output, and an RJ45 Ethernet port.

Please note that the I2C pins (SDA and SCL) are 3.3V; the 5V pin is supplied to ensure users have enough voltage and current to power their external devices and does not imply a 5V I2C port.

The ComfilePi has a 4th USB port dedicated to programming the Compute Module's eMMC.

Side Panel IO Ports

The right panel of the ComfilePi exposes a MicroSD card slot and a stereo audio output jack.

For models with an eMMC, the MicroSD card slot is not electrically connected, so it cannot be used.

Developing Software for the ComfilePi

The ComfilePi, like most Linux computers, can be programmed in just about any programming language. The following guides illustrate just a few of the possibilities.

  • .NET (C# & VB.Net) - Develop and debug applications for the ComfilePi using C#, VB.Net, .NET 7, and Mono.
  • C/C++ - Develop and debug applications for the ComfilePi using C and C++, including GUI applications using frameworks such as Qt, and GTK+.
  • Java - Develop and debug applications for the ComfilePi using Java and JavaFX.
  • CODESYS - Develop applications for the ComfilePi using the IEC 61131-3 international industrial standard.
  • NODE-RED - a browser-based flow editor

Our company does not provide software development services.


Raspberry Pi is a trademark of the Raspberry Pi Foundation

comfilepi/index.txt · Last modified: 2023/03/21 16:39 by COMFILE Technology