Differences

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--- audio:volumio_tips [2024/04/19 20:11] – created mithat
+++ audio:volumio_tips [2024/04/19 20:38] – [On-screen keyboard] mithat
@@ Line 1: / Line 1: @@
 ====== Volumio tips ======
-For my music server and streaming needs, I'm currently using Volumio 3 on a Raspberry Pi 3 with the official Raspberry Pi touchscreen. Here are some configurations tips I'm employing.
+For my music server and streaming needs, I'm using Volumio 3 on a Raspberry Pi 3 with the official Raspberry Pi touchscreen. Here are some configurations tips I'm employing.
 ===== Power-off button =====
 One of the biggest gripes about the Rasperry Pi is the poor out-of-the-box support it has for a power button. However, not a lot of people know that the Raspberry Pi OS does have //almost// out-of-the-box support for an OFF button. It's enabled using the platform's [[https://www.raspberrypi.com/documentation/computers/configuration.html#part3.1|dtoverlay]] system.
-To create power-off button functionality using the default GPIO 3 as the shutdown signal, it's as simple as adding:
+To enable power-off button functionality using the default GPIO 3 as the shutdown signal, it's as simple as adding the line:
 <code>
@@ Line 14: / Line 14: @@
 to ''/boot/userconfig.txt''. Then wire up a momentary switch from GPIO 3 to GND. After a reboot, pushing the button should turn off the RPi.
-If you add this to ''/boot/config.txt'' as many folks suggest, it'll still work until a system update rewrites that file. Adding it to ''/boot/userconfig.txt'' circumvents that problem.
+If you add this to ''/boot/config.txt'' as many folks suggest, it'll still work until a system update rewrites that file. Adding it to ''/boot/userconfig.txt'' circumvents this problem.
 **However**, you can't do this with the official touchscreen (and likely others), because the touchscreen uses GPIO 3. Instead, you need to specify a different GPIO pin. I chose GPIO 5 because there's a GND pin right next to it on the GPIO header.
@@ Line 23: / Line 23: @@
 There's a good discussion about ''gpio-shutdown'' at [[https://www.stderr.nl/Blog/Hardware/RaspberryPi/PowerButton.html|stderr.nl]].
+===== Power-on button =====
+For a kludgey power-on button, I use a [[https://www.amazon.com/gp/product/B01HEXFQTU/|short USB extension cable with a power switch]]. It's short to reduce the potential for voltage drop. After powering off with the power switch above, one push of the button removes power from the RPi, and another push brings it back, which initiates a boot. It's kludgey as hell, but it works.
+===== On-screen keyboard =====
+Volumio 3 doesn't have an on-screen keyboard option or plugin when using a connected touchscreen. However, the display is actually a Chromium web browser display in kiosk mode, and this means we can use an on-screen keyboard for that.
+One option is described [[https://community.volumio.com/t/working-virtual-keyboard-in-volumio3-with-touch-plugin/59571/12|here]]. In case that post goes down and/or TL;DR, the essence is:
+  * Connect a keyboard to your system and press ALT+HOME. This will open the Chromium browser.
+  * Search for “Chrome web store virtual keyboard”
+  * Install the extension [[https://chrome.google.com/webstore/detail/virtual-keyboard/pflmllfnnabikmfkkaddkoolinlfninn?hl=en|Virtual Keyboard - Chrome Web Store]]
+That said, the link to Virtual Keyboard doesn't work. So, I tried an alternative. FIXME