Diodes Delight

Building Open Source Hardware.
Get in touch at [email protected]

@[email protected]

[Nicholas A @changeforabuttn]

Doing some holiday hacking with a @diodesdelight Piunora Pro, Hailo 8L, and @Raspberry_Pi CM5 8gb. This carrier board is so compact and easy to setup, if only there was a way to leverage USB 3.0! Looking forward to more tests once I'm back home and can attach some heatsinks 😅

[Diodes Delight @diodesdelight]

.@Raspberry_Pi announced the Compute Module 5! We are glad to report Piunora supports CM5!
Compared to CM4 you get an upgrade to PCI-e 2.0/3.0 on the M.2 port. The camera connector can now also be used for displays and the back button can be used for hardware power on/off

[Diodes Delight @diodesdelight]

@Raspberry_Pi announced the Compute Module 5 today! We are glad to report Piunora supports CM5!
Compared to CM4 you get an upgrade to PCI-e 2.0/3.0 on the M.2 port. The camera connector can now also be used for displays and the back button can be used for hardware power on/off

[Diodes Delight @diodesdelight]

@permagriculture yea, that should work if the pinout was held compatible

[Diodes Delight @diodesdelight]

@permagriculture Yes, unfortunately not possible to use on BCM2711/CM4 due to hardware issues in the PCIe peripheral.

[Diodes Delight @diodesdelight]

@permagriculture @adafruit Check https://t.co/SXDT68yDuT
for an example for using the display driver in the latest kernel

And here for the focaltech touch driver (it works with pretty much all focaltech touch ICs)
https://t.co/Ft7PLNhIDV

[Diodes Delight @diodesdelight]

@permagriculture @adafruit in the newest kernel there is even direct support so you can use it with the new Wayfire Desktop

[Diodes Delight @diodesdelight]

@permagriculture @adafruit Would recommend the capacitive variant if you plan to use it with Linux directly eventually. The focaltouch cap touch has currently a bit better support than TSC2007

[Diodes Delight @diodesdelight]

@permagriculture @adafruit That should work okay yes. At a glance it seems to be compatible as is.

[Diodes Delight @diodesdelight]

@permagriculture f.e.
https://t.co/0uw2qXPH1k

[Diodes Delight @diodesdelight]

@permagriculture If you don't need a full color screen I would recommend those I2C OLED screens. They are great for simple graphs or text and have good support for both Python and Kernel driver use.

[Diodes Delight @diodesdelight]

@permagriculture Yes that is ususally an essential IO for adressing a display. Same for some of the other auxilary IO they placed on the Analog pins like the DC and CS.

[Diodes Delight @diodesdelight]

@permagriculture Generally this will be a bit fiddely. That specific board expects parallel IO instead of SPI.
If you want to bit bash via CircuitPyhton that might work out but could get fiddely if you want to show the Linux Desktop.

[Diodes Delight @diodesdelight]

@permagriculture The analog pins on Piunora are attached to a dedicated ADC. You can not use them as digital pins like the classic Arduino can.
So you will not be able to use any pins there unless you modify the shield and wire those pins to a free digital IO pin that connect to the CM4

[Diodes Delight @diodesdelight]

@permagriculture The display data pins are on digital IO but some auxiliary IOs are on the ADC pins. At least the reset line would probably need to be toggled to use it.

[Diodes Delight @diodesdelight]

@permagriculture Sometimes there are solder pads to re-assign the SPI signal to a different set of pins.
With most screen shields I have seen the issue is either that or that they put digital IO on the ADC pins which are not dual use on Piunora.

[Diodes Delight @diodesdelight]

@permagriculture Have not tested any personally.
Generally 99% of displays out there are 3v3 logic. Most level shifters on those boards are transparent and should just work if its 3v3 to 3v3.
The only thing to look out for is if they depend in the 6pin ISP header, which is not present on Piunora.

[Diodes Delight @diodesdelight]

Die we mention its open source hardware? If you plan on designing a product based on the CM4 then Piunora is an excellent starting point for prototyping. Our design files are free to use for commercial applications!
The M.2 B-Key is great for WWAN/5G applications.

[Diodes Delight @diodesdelight]

Compute Module 4 is back in stock at full strength!
You can buy a CM4 and a Piunora Pro right now on Mouser with free worldwide shipping!
Piunora is an ultra compact Arduino UNO form-factor carrier for the CM4 with M.2 PCI-e, HDMI, Camera connector, ADC and much more!

[Diodes Delight @diodesdelight]

The @Raspberry_Pi Compute Module 4 is slowly coming back into stock at the industry distributors!
Right now several hundreds are in stock at @Farnell_Avnet and many more restocks in November and December across all official distributors.