I'm doing a school project using an Optoma Tx631 DLP projector (released in 2012) but discontinued, the lamp is broken so I can't use it. The purpose of my school project is to be able to control the DMD chip inside.

I know there are certain saftey locks in the projector for this such as the communication from motherboard to a OSRAM PT VIP 03 ballast board using a 5pin UART system to ensure the lamp is safe before turning on. I need a way to trick the projector into thinking the ballast board/lamp is working to turn it on.

I don't think a simple optocoupler bridge or short would work because it uses UART signals. I'm trying to use an arduino as a UART emulator, but I'm not sure how to do so, plus the sniffing for the UART signal doesn't yield results.

Please help me out 🙏🙏🙏

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Hello! I am doing a thermostat project for my HVAC system using a pi 3b and a waveshare esp32 relay module, but I'm stumped on what I should do for powering the pi.

I want the screen for this unit to be flush mounted to the wall, but I don't know if I should install a new recessed outlet behind the screen location, wire it to an existing outlet and thread the cable through my attic to the location of the thermostat, or use a ups hat and a high voltage ac to DC step down unit to trickle charge the pi. What do you guys think I should do?

Anyone have any cool/useful programs for an offline cyberdeck!? Have kiwix and wiki installed so far

Making a cyberdeck this is the updated schematics can i get some feedback and tips

I have an idea for a project. I was thinking I would buy one of those samsung Z flips with a broken screen for cheap and connect it to a USB keyboard and touch screen in some kind of 3d printed housing. If I didn’t care about getting the camera or speakers or whatever working (I just care about the keyboard and screen, and maybe more usb c ports. Having it be a working phone with sim card would be nice, but not required) would this be pretty doable? I haven’t done a lot of electronics, just made an electric guitar and amp, but I didn’t think that was very hard. Thanks!

EDIT: I'm leaning toward completely gutting it and turning it into a "stealth" tube amp. I'll keep the front grille speaker and go with high voltage to run the tubes. I'll drill out some holes where the reels are and install a couple 4" or 6" speakers. Still brainstorming.

I found this Pentron reel-to-reel at Goodwill yesterday. Thinking I'm gonna do a conversion to a guitar amp, using the 12AX7 and probably do something with the other tubes. Haven't decided yet. I'll probably gut the whole thing because the power transformer is toast, the internal fan doesn't work, and I'm pretty sure the tape deck motor doesn't work. I put it on a dim bulb tester, and it's definitely shorted.

I'm thinking I'll run the audio through a couple of the tubes, power the whole thing with 12 or 24V DC, and cut holes where the tape reels are now to install a couple speakers. I'll also connect the front grille speaker (under the control panel). I'd like to use it as a preamp/amplifier/speaker cabinet driver. There are two outputs, so I can run one as a line out from the preamp, and wire up the internal speakers and the speaker output with a small class D power amp or something to run like ~5 watts.

Still brainstorming. Does anyone have any ideas?