# RGB Light strip not working, rest of Pironman 4 working with Raspberry Pi 4b **URL:** \ **Category:** General\ **Created:** [May 10, 2025, 11:21am UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176 "2025-05-10T11:21:00Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Neomaverick](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@Neomaverick](https://forum.sunfounder.com/u/Neomaverick)\ **Post date:** [May 10, 2025, 11:21am UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176/1 "2025-05-10T11:21:00Z")
So after a lot of learning and unclear instructions online, I got most of the Pironman 4 to work. Not the fault of the company, just information you need to know about linux before starting. For example, to use cd ~, it’s a lie it’s actually cd (forwardslash), you would never guess that in a month… maybe they should use the actual symbols instead of expecting you to know that. Again, not sunfounders fault, its common knowledge. Anyway, everything is working except my RGB lights. When I type: sudo pironman -rw on (or off) It says: Invalid argument: -rw (this is in red font) Every other command works perfectly Please advise Can’t get the GRB light strip to come on no matter what I do ---
**Author:** ![Weirdyguy](https://avatars.discourse-cdn.com/v4/letter/w/d78d45/32.png) [@Weirdyguy](https://forum.sunfounder.com/u/Weirdyguy)\ **Post date:** [May 10, 2025, 1:21pm UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176/2 "2025-05-10T13:21:23Z")
> [@Pironman LED strip not working](https://forum.sunfounder.com/t/pironman-led-strip-not-working/518): > > Hi, I have installed new Pironman mini pc chasis and it seems due to some reason LED strip is not working. I tried to enable the RGB lights through command line, it did say it succeed but not light glowing. Please help to resolve this issue if I am doing something wrong here ? or do I need to get replacement for this if it is faulty part ? Thanks in advance. ---
**Author:** ![Neomaverick](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@Neomaverick](https://forum.sunfounder.com/u/Neomaverick)\ **Post date:** [May 10, 2025, 1:54pm UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176/3 "2025-05-10T13:54:38Z")
Completely unrelated to me in any way. I’ve already completed all of those steps. Please read what I wrote. Thank you for your time ---
**Author:** ![Neomaverick](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@Neomaverick](https://forum.sunfounder.com/u/Neomaverick)\ **Post date:** [May 12, 2025, 8:45am UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176/4 "2025-05-12T08:45:21Z")
![1000043000](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/4/47a222bfd059bd8c315157f4dd7b2f5566a8ac9a.jpeg) Got it to work by cd ~\pironman sudo pironman rp 12 It could be 10, 12, or 21. Each one requires a restart to test. It’s unbelievable, some people may never figure this out. Lucky for me I’m tenacious and don’t sleep well until I solve problems. This should never be an issue, I’m not sure what the devs were thinking here, but I did so much learning. Lol ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [May 12, 2025, 9:16am UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176/5 "2025-05-12T09:16:28Z")
Could you please check if: - The jumper cap for the RGB pins on the expansion board - Was properly connected to pin 10 during factory assembly? ---
**Author:** ![ekkenny](https://avatars.discourse-cdn.com/v4/letter/e/46a35a/32.png) [@ekkenny](https://forum.sunfounder.com/u/ekkenny)\ **Post date:** [May 16, 2025, 3:04pm UTC](https://forum.sunfounder.com/t/rgb-light-strip-not-working-rest-of-pironman-4-working-with-raspberry-pi-4b/3176/6 "2025-05-16T15:04:27Z")
the command “cd ~” takes you to your home directory.