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Questions tagged [compute-module]

For questions pertaining to the Raspberry Pi compute module.

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CM3 GPT Partition Table and U-Boot

I am working in yocto currently to develop an image for my compute module boards (both CM3 and CM4) , It was my understanding that using yocto I should be easily able to switch between the hardwares ...
Aidan Moss's user avatar
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0 answers
75 views

What sort of cap should I use for antenna connector?

I plan to use CM4 with a Wi-Fi/Bluetooth antenna. The antenna will be detachable from housing of the designed product. What sort of a cap should I use? Options are shorting and non-shorting. Edit: CM4 ...
maciek's user avatar
  • 131
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0 answers
44 views

What is the board to board connector of CM4 to IO board?

I'm trying to draw a new board for hobby project that utilize the CM4 (Compute Module 4). However, I didn't found any footprint for the connector module of the board to board connector between CM4 and ...
Weishan Yang's user avatar
1 vote
0 answers
52 views

Reboot PI flashed via rpiboot without disconnection power

I've used rpiboot to get access to a raspberrypi's storage and flashed an image. How can I reboot the raspberry from the terminal. It should boot into the flashed OS, without any physical action such ...
Aki's user avatar
  • 111
2 votes
0 answers
613 views

How to access CM4 IO Board serially?

I have a Raspberry Pi CM4 IO Board and want to access it via serial console. Do I need to use external USB to TTL Rs232 Module Converter Serial Cable Adapter(USB to TTL Rs232) to connect serially? Or ...
Preeti 's user avatar
  • 131
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0 answers
400 views

I2S boot overlays configurations for RPI CM4

I am trying to install a mono or stereo I2S microphones to a Raspberry Pi CM4 Board. I am getting some reference links for configurations but they are suggested to work on the older version of the RPI ...
shiv patil's user avatar
2 votes
0 answers
2k views

Activate USB Ports on CM4 with Debian Bullseye

I want to use Debian on my Compute Module 4 instead of the Raspberry Pi OS: 2021.08.23 11 (Bullseye) 4 4 (4GB) from raspi.debian.net source: jeffgeerling With the Raspberry Pi OS the following has do ...
Yannik's user avatar
  • 21
1 vote
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27 views

How fast would USB network access be?

I want to build a NAS using a raspberry pi. It feels important I should connect my HDD's via SATA, but the only way I figure out how to do this is with a compute module coupled with the IO board, and ...
muke's user avatar
  • 167
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0 answers
1k views

RaspberryPi Compute Module 4 bootloader EEPROM update issue

One day I got a new CM4 Lite module and the official IO board. I wanted to try a NVME disk as a boot device but I found that original EEPROM didn't have this option enabled (BOOT_ORDER didn't have 6 ...
hanni76's user avatar
5 votes
4 answers
3k views

What is the correct way to access GPIO on RPi?

I have a brand new Compute Module 4 with Raspberry Pi OS installed. The system is up-to-date, but I cannot read GPIOs or change their state. $ gpio -v gpio version: 2.52 Copyright (c) 2012-2018 Gordon ...
nowox's user avatar
  • 229
-1 votes
1 answer
380 views

Can I use the usb pins on the pi cm4 directly?

I'm designing my own CM4 breakout board. If I only need one usb device, can I use the usb pins on the pi cm4 directly without the multiplexer chips?
bob mcgrath's user avatar
0 votes
1 answer
59 views

What is the name and specs for the RPi CM 4's GPIO connectors?

I want to use a compute module for a personal project; but I don't know the name of the connector that is used for the GPIO/SPI etc. It is the one pictured here In the spec sheets, I see the pin out ...
yarbelk's user avatar
  • 109
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2 answers
4k views

Compute Module 4 and Camera Module v2.1 - How to configure?

I am confused by the instructions posted here which explain how to configure various Compute Module devices with camera modules. These instructions appear to be confusing as they describe at least 3 ...
user3728501's user avatar
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31 views

CM3+ and RaspiCam V2 issues

I'm trying to use two RaspiCam V2 with CM3+ and Computer Module 3+ Development Kit board. I followed instructions provided in official links: Raspberry Pi OS with desktop and recommended software ...
weirdgyn's user avatar
  • 122
1 vote
1 answer
788 views

Anyone successfully managed to get the CM4 to boot directly from a PCIe SSD?

I've been trying off and on for a few days to get the PCIE boot working on my CM4/CM4IO setup but without success. No matter how I attempt to convince RPIOS or Ubuntu to install the latest firmware ...
Simon Banks's user avatar
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0 answers
421 views

Cloning a project image from Raspberry Pi 4 (SD) to CM3+ (eMMC)

I'm relatively new to Raspberry Pi platform, and I made a project on Raspberry Pi 4 working on a 32Gb SD card. Now that my project is up and running I need to transfer it to an industrial extension ...
ashdesigner's user avatar
0 votes
1 answer
387 views

Raspberry pi compute module 4 io board and compute module power on with PoE

I have rpi cmb4 and I want to power on rpi with using PoE. I don't know how should I do. I tried to just connect ethernet cable to rpi but rpi was still closed. Is there any idea?
noobinmath's user avatar
3 votes
1 answer
4k views

Pi CM4 - Additional UART enabling does not work

I have a Compute Module 4 here, and i want to enable more UART ports The Datasheet, Page8 specifies that uart 2-5 can be enabled since their ports are not used by anything else I've run raspi-gpio get ...
sgt_johnny's user avatar
0 votes
2 answers
928 views

What is Reset state of GPIOs on Raspberry Pi Compute Module 4?

I want to use Raspberry Pi Compute Module 4 to control some 24V Outputs. I am using MAX14912 Driver. I want to asure that Raspberry does not turn the output on during booting process. According to ...
esehic's user avatar
  • 109
1 vote
0 answers
709 views

CM4 eMMC - safe shutdown / power supply schemes

I'm working on a design that uses a CM4 with eMMC and may (optionally) use an external SD card or USB stick for "user" file storage. The unit could (potentially) be hard powered-down by the ...
John U's user avatar
  • 181
1 vote
2 answers
2k views

Can you use the Rpi compute module CM4 without the IO board?

I want to use the raspberry pi for some projects, although the normal pi is too big and I want it to be as compact as possible. I thought about using the compute module(without the IO board) since it ...
randomuser922's user avatar
1 vote
0 answers
870 views

HDMI-to-( TTL or LVDS ) decoder/driver on a custom PCB [closed]

I am working on a custom-made handheld PCB based around a PI Compute Module and one of the hardest steps I have found is how to include an HDMI-to-(50pin-TTL or LVDS) driver on my PCB to run my LCD ...
Ruben A. Chevez's user avatar
1 vote
2 answers
1k views

Adding a LAN module to Compute Module 3

For an alarm with wired sensors and home automation purposes, I want to use a compute module 3 (for its eMMC reliability) but I have an issue ; I need a LAN connection. In one of your answers ...
Dr No's user avatar
  • 11
0 votes
0 answers
196 views

Raspberry Pi Compute Module - VBAT SMPS schematic

I'm developing a PCB for a LiON battery powered portable device featuring the Raspberry Pi CM3+ compute module, but am having difficulty verifying my power budget for the system due to the datasheet ...
Peter Werle's user avatar
1 vote
0 answers
908 views

Compute Module 3+ Power supply

I am designing power supply for CM3+ board and got few questions. I decided to use 2 LDO's (3V3 and 1V8 outputs both from 5V usb VBUS). Wanted to ask if its good solution or maybe connect 1V8 to 3V3 ...
michalz's user avatar
  • 11
2 votes
1 answer
461 views

Composite video on Compute Module

I'm working on a Compute Module design that uses the composite video output. I know the Zero and presumably the full size Pi have some passive components on the output pin, but I'm not sure what of ...
Joe Baker's user avatar
  • 141
1 vote
1 answer
1k views

Compute Module 3+, using SD card on sd1

I have a custom designed board using the compute module 3+, booting from the EMMC with an SD card interface connected to GPIO 34-39. From what I've read elsewhere the only thing I need to do is to ...
Pathead's user avatar
  • 283
2 votes
1 answer
280 views

raspberry pi compute module replication

I have a raspberry pi compute module with me and I have installed a number of programs into it. I have to reinstall the same programs on a number of such modules. Is there any way that I can create ...
roshini's user avatar
  • 25
1 vote
0 answers
322 views

180 panoramic based on multiple cameras

Need some help please :) I would need some help to find the best option for a product upgrade. Right now, it consists of a Raspberry Pi 3 B+ with the Camera Module v2 and an external mobile ...
Federico's user avatar
1 vote
0 answers
166 views

Compute module 3 versus compute module 3 lite difference

I want to buy Compute module 3 and from looking at the description the difference between CM3 and CM3 Lite is that the Lite version doesn't have on board SD card. So if I buy the lite version I can ...
Lightsout's user avatar
  • 429
1 vote
2 answers
411 views

Multiplexer vs RPI Compute Module for stereo camera?

I am looking to capture images simultanously using 2 picameras (tried USB the FPS is low). It seems like there are 2 options: Raspberry Pi compute module 3 with IO board which gives 2 CSI ports(...
Lightsout's user avatar
  • 429
1 vote
1 answer
2k views

Stereoscopic capture (2 cameras) on Raspberry Pi 3?

What's the best way to connect 2 cameras to the Raspberry Pi? Is it true the only way to do it is with the compute module? Can you use 2 USB cameras? Can you use a multi-camera adapter like this? (...
megashigger's user avatar
0 votes
1 answer
1k views

Compute Module 3, Can't Remove Boot Error Showing on Embedded Display

Edit: Unnecessary snark aside, I found that there was a commit referencing this exact issue in the kernel two days ago. As of now I'm compiling from source, and while I had it available, I also ...
user avatar
1 vote
1 answer
854 views

Compute Module 3 + PIGPIO SPI, Clock signal but no data

So I'm trying to write to as spi eeprom using the pigpio library, but I have the problem of only the clock line going active, none of the data or select lines. I'm debugging the signals with the ...
user avatar
7 votes
1 answer
916 views

USB OTG on Compute Module 3

Has anyone ever tried configuring the USB of the Compute Module 3 as USB OTG? In the default kernel (Raspbian Stretch - Kernel7), support for usb otg appears to be disabled. Has anyone managed to ...
Alfredo Pons Menargues's user avatar
1 vote
2 answers
215 views

Flashing Raspberry Pi CM V1.1 on a proprietary board

So I don't know much about Linux or the Raspberry Pi (Especially the compute module), But I've managed to obtain one that is using a custom/proprietary board alongside it. All the thing is currently ...
Zomon333's user avatar
5 votes
2 answers
8k views

Is it possible to power a Raspberry Pi (Zero/Compute Module) over an HDMI/MHL socket of a TV?

Today I stumbled upon the WDLabs Media Stick for the Raspberry Pi Compute Module at the ModMyPi Online Store and was immediately reminded of the Intel Compute Sticks or the ASUS Stick PCs. But the ...
Axel Beckert's user avatar
  • 1,182
2 votes
1 answer
175 views

Gadget Mode in Rpi Compute Module?

Does anybody know how to put the Rpi Compute Module in Gadget Mode or a way to pass files from this module to the PC via USB? I have found this but for the Rpi Zero.
Cuau Suarez's user avatar
4 votes
1 answer
3k views

Bluetooth UART on the Compute Module

We're trying (unsuccessfully) to attach a UART bluetooth SoC to the Raspberry Pi 3 Compute Module. The bluetooth SoC is a based off a Nordic nRF51. It's running project Zephyr RTOS hci_uart sample. ...
Budius's user avatar
  • 141
2 votes
5 answers
6k views

remove uv4l "software by http://linux-project.org" watermark

Using the Compute Module & IO Board, I installed uv4l. I'm just not sure why this "software by http://linux-project.org" watermark showed up only when I use Stereoscopic Vision. (No watermark ...
l489977's user avatar
  • 61
3 votes
0 answers
1k views

CM Stream Dual Cameras simultaneously

I'm a beginner user. My goal is to stream low-latency dual cameras to pc, and then record&save the videos. Using the Compute Module & IO Board, I have done this: https://www.raspberrypi.org/...
l489977's user avatar
  • 61
2 votes
1 answer
146 views

Raspberry Compute Model 3, is hardware opensource and approach to integrating HD camera on board?

Im planning to build a home security video surveillance to record video and stream it. This is a personal project but I want to approach it with a production ready mindset, as a challenge for myself. ...
jordanlance's user avatar
0 votes
1 answer
637 views

Which displays can be operated with the Compute Module IO Board V3?

Are there displays that were developed to work with the DSI ports of the Compute Module IO Board V3? I am looking for color displays as well e-ink displays.
zepp133's user avatar
  • 101
1 vote
1 answer
1k views

update-initramfs never doing work

i'm trying to add some scripts to the /etc/initramfs-tools/scripts/init-bottom folder to manipulate some partitions and files before boot. when i run update-initramfs -u it always gives back ...
Tychus's user avatar
  • 112
-4 votes
1 answer
738 views

Which language is better for raspberry pi compute module for image processing?(Python/CPP/JAVA) [closed]

As I want to develop product using raspberry pi Compute module. Which language is better for image processing if I am using OpenCV?? Camera in project is steady taking video & doing processing...
Nagesh13's user avatar
5 votes
1 answer
657 views

Stereo vison with Compute module via SSH

I started working with a Raspberry Pi Compute Module and 2 PiCamera after long time. I lost all the notes about our old class project, I quite don't remember all our procedures Each camera is ...
marcoresk's user avatar
  • 161
0 votes
2 answers
134 views

Will there ever be an updated Compute Module?

I would really like to build a product with a Compute Module as its core. But the current module is essentially a Raspberry Pi 1 and the computing power would not be sufficient. When the Compute ...
Karsten's user avatar
  • 131
2 votes
1 answer
604 views

Price of compute module versus Pi Zero

The Pi Zero seems to be a more advanced and complete solution than the compute module (it has many feature the second does, except the number of IO). But it is way cheaper, even when adding the cost ...
Brice's user avatar
  • 21
5 votes
1 answer
743 views

flashing compute module with usbboot

I am trying to flash compute module using a RPI 2 from this manual: I did the following: Clone the usbboot tool repository: git clone --depth=1 https://github.com/raspberrypi/tools cd tools/usbboot ...
Thommy's user avatar
  • 61
1 vote
0 answers
1k views

How to reset a compute module stuck in kernel panic?

My compute module boots up into kernel panic, I can't get a console to enter commands to exit, stop, reset, anything. I'm also a newbie, I know very little about Linux, so I rely heavily on eBooks, ...
mudpyed3's user avatar