Got this up and running thanks to @karsten13 's help with screen blanking. Also had start-up issues as detailed here.

Runs on a RPi 4B I had lying around with MagicMirrorOS driving the fabulous RPi monitor with a PIR sensor to sense people in the room for screen blanking. Viewing angle on this screen is very impressive, very sharp and crisp display.

The Pi is in the boiler cupboard and wiring is hidden in 25x16mm trunking painted to match the wall. PIR sensor is in the tiniest project box I could find. Screen is on a VESA mount.

MagicMirror modules:

• MMM-Universal-Pir - controlling HDMI for screen sleep
• clock
• calendar - hidden, pulling UK Holidays and Family Google calendar feeding:
• MMM-CalendarExt3Agenda with CSS mods so it fills most of the screen
• MMM-MyGarbage
• weather showing current and forecasts from UK met office
• newsfeed showing BBC news

@sdetweil What’s the procedure to update that module?

There is a git error in the Docker logs for MMM-CalendarExt3Agenda, though

[2026-05-05 12:14:05.460] [ERROR] [updatenotification] Failed to get git revisions for MMM-CalendarExt3Agenda: Error: Command failed: git rev-list --ancestry-path --count 72816f2..ed664f3  main
fatal: ambiguous argument '72816f2..ed664f3  main': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

@karsten13

I did a docker compose pull in the opt/mm/run directory and that was successful

magicm@magicmirror:/opt/mm/run $ docker compose pull
[+] Pulling 17/17
 ✔ labwc Pulled                                                                                                    0.9s
 ✔ magicmirror Pulled                                                                                             81.9s
   ✔ 76b7b92b680d Already exists                                                                                   0.0s
   ✔ 5ee1ed488d07 Already exists                                                                                   0.0s
   ✔ 3154f7f9972b Already exists                                                                                   0.0s
   ✔ 73114b557eb0 Already exists                                                                                   0.0s
   ✔ 563f46f75d49 Already exists                                                                                   0.0s
   ✔ ad0a7f3409e8 Already exists                                                                                   0.0s
   ✔ 5a172ff577b3 Already exists                                                                                   0.0s
   ✔ 39715dbbbd4f Already exists                                                                                   0.0s
   ✔ 189de6907d33 Already exists                                                                                   0.0s
   ✔ e8dbedaf8b5d Pull complete                                                                                    0.4s
   ✔ 3c77d19aac28 Pull complete                                                                                    0.5s
   ✔ 8d20b36a9778 Pull complete                                                                                    0.5s
   ✔ 1d705635a0a9 Pull complete                                                                                   51.6s
   ✔ 5c309722c0df Pull complete                                                                                   80.1s
   ✔ 4f4fb700ef54 Pull complete                                                                                   80.2s

but the clock and agenda are still on UTC. The Docker logs state this early on
[INFO] ***WARNING*** could not set timezone, please set TZ variable in compose.yaml, see https://khassel.gitlab.io/magicmirror/configuration/#timezone

UPDATE

Before I could send this another day passed and now they are correct! Docker is still on UTC but the Clock and Agenda are correctly showing times on BST!

magicm@magicmirror:~ $ date
Tue  5 May 12:15:21 BST 2026
magicm@magicmirror:~ $ docker exec -it mm bash
node@magicmirror:/opt/magic_mirror$ date
Tue May  5 11:15:28 AM UTC 2026

Hi

After a recent reboot (to update MMM-CalendarExt3Agenda and add some more dates to MMM-MyGarbage) I’ve noticed that the clock and agenda modules have reverted to UTC (should be BST right now).

A quick look shows the docker container is now running with UTC (although the RPi is correctly on BST):

magicm@magicmirror:~ $ date
Sun  3 May 09:02:24 BST 2026
magicm@magicmirror:~ $ docker exec -it mm bash
node@magicmirror:/opt/magic_mirror$ date
Sun May  3 08:02:36 AM UTC 2026

I’ve not set the timezone (or date format) explicitly for the Docker before. Has a new release of Docker changed that and, if so, how do I pass that setting through?

Many thanks

Steve

@karsten13 perfect, thank you. The Docker container has gpiomon at v2.2.1. It never occurred to me the container would update things unannounced!

Many thanks for your help

Steve

magicm@magicmirror:/opt/mm/mounts/config $ gpiomon --help
Usage: gpiomon [OPTIONS] <chip name/number> <offset 1> <offset 2> ...

Wait for events on GPIO lines and print them to standard output

Options:
  -h, --help:           display this message and exit
  -v, --version:        display the version and exit
  -l, --active-low:     set the line active state to low
  -B, --bias=[as-is|disable|pull-down|pull-up] (defaults to 'as-is'):
                set the line bias
  -n, --num-events=NUM: exit after processing NUM events
  -s, --silent:         don't print event info
  -r, --rising-edge:    only process rising edge events
  -f, --falling-edge:   only process falling edge events
  -b, --line-buffered:  set standard output as line buffered
  -F, --format=FMT      specify custom output format

Biases:
  as-is:        leave bias unchanged
  disable:      disable bias
  pull-up:      enable pull-up
  pull-down:    enable pull-down

Format specifiers:
  %o:  GPIO line offset
  %e:  event type (0 - falling edge, 1 rising edge)
  %s:  seconds part of the event timestamp
  %n:  nanoseconds part of the event timestamp
magicm@magicmirror:/opt/mm/mounts/config $ gpiomon -v
gpiomon (libgpiod) v1.6.3
Copyright (C) 2017-2018 Bartosz Golaszewski
License: LGPLv2.1
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

-r is listed in the library help for v1.6.3

The Docker log shows
[2026-02-10 11:30:10.955] [ERROR] [MMM-Universal-Pir] stderr: gpiomon: invalid option -- 'r' gpiomon: try gpiomon --help

but gpiomon -r -b gpiochip0 23 works in a terminal when pasted from the config.js file, very strange

It’s just stopped working!

Steve

Hi

With no warning (I haven’t carried out any updates) MMM-Universal-Pir is now failing. It shows under the ‘PIR SENSOR’ heading on the MM screen ‘gpioCommand exited with error!’

Config is:

                    module: "MMM-Universal-Pir",
                        position: "bottom_right",
                        config: {
                            gpioCommand: "gpiomon -r -b gpiochip0 23",
                            onCommand: "wlr-randr --output HDMI-A-1 --on --transform 90",
                            offCommand: "wlr-randr --output HDMI-A-1 --off",
                            deactivateDelay: 120 * 1000,
                            }

and in a terminal gpiomon -r -b gpiochip0 23 shows events when the PIR is triggered and

wlr-randr --output HDMI-A-1 --on --transform 90 and wlr-randr --output HDMI-A-1 --off still control the screen.

gpiomon is v1.6.3

What can have changed?

Steve

Got this up and running thanks to @karsten13 's help with screen blanking. Also had start-up issues as detailed here.

Runs on a RPi 4B I had lying around with MagicMirrorOS driving the fabulous RPi monitor with a PIR sensor to sense people in the room for screen blanking. Viewing angle on this screen is very impressive, very sharp and crisp display.

The Pi is in the boiler cupboard and wiring is hidden in 25x16mm trunking painted to match the wall. PIR sensor is in the tiniest project box I could find. Screen is on a VESA mount.

MagicMirror modules:

• MMM-Universal-Pir - controlling HDMI for screen sleep
• clock
• calendar - hidden, pulling UK Holidays and Family Google calendar feeding:
• MMM-CalendarExt3Agenda with CSS mods so it fills most of the screen
• MMM-MyGarbage
• weather showing current and forecasts from UK met office
• newsfeed showing BBC news