@PCOWandre@jauntygoat.net
@PCOWandre@jauntygoat.net avatar

PCOWandre

@PCOWandre@jauntygoat.net

Just zis guy, you know?

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PCOWandre, to random
@PCOWandre@jauntygoat.net avatar

Hackable cheap hardware:

K-Mart has these lightning bolt faux-neon LED thingies on clearance for $12. They're built with addressable WS28xx LEDs and so can be easily chopped and used with WLED et al.

https://www.kmart.com.au/product/led-neon-lightning-bolt-light-43320790/

PCOWandre, to random
@PCOWandre@jauntygoat.net avatar

You'd think with all the AI hype there'd be some comment from the FTC about nvidia holding a monopoly position. Guess they're a bit too busy with the 'affordable luxury' handbag problem.

timrichards, to random
@timrichards@aus.social avatar

I'm off to the Secret Post Office [hums the Secret Post Office tune]

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@timrichards Maybe they could put a post office in the GPO building?

decryption, to random
@decryption@aus.social avatar

wtf is this sennheiser thing in the ceiling in this classroom/large meeting room space?

image/jpeg

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@decryption A six thousand dollar fancy microphone.

https://www.videopro.com.au/product/sennheiser-507488-teamconnect-2-ceiling-microphone-array-with-truvoicelift-white/

decryption, to random
@decryption@aus.social avatar

Any solutions for using a smartphone permanently plugged in without destroying the battery? e.g for use as a security camera, or a display

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@decryption Set the battery charge limit/protection?

jpm, to random
@jpm@aus.social avatar

Dear STMicro, Microchip, NXP, NordicSemi, Renesas, Espressif, WCH, et al,

There are too many features on MCUs these days. Please remove three. I am not a crackpot.

Regards,

-Every MCU developer on the planet

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@jpm Next you'll be suggesting the ESP32 doesn't need an onboard magnetometer.

decryption, to random
@decryption@aus.social avatar

any of you nerds seen an ESP-based relay board that'll handle 24V AC and also take input from a physical switch?

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@decryption @chendo Just a word on the Shelley running on DC -- I found it was pretty sensitive to interference. I installed one to switch some decorative neons (12VDC input) and had to add choke/caps to avoid the Shelley randomly rebooting.

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@chendo @decryption I read "damper" and "24VAC" and figured electrically noisy / inductive HVAC parts.

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@decryption @chendo Hard to say much more without knowing the full setup and story.

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@decryption @chendo Hah, that reply does seem to be about on-par from the hass forum.

A rough wiring diagram would be helpful.

e.g., is there is a single 24V control voltage to open the damper or a pair of switched lines for open/close?

Ass-uming the setup of three wire dampers and the wiring running direct from the control panel to each damper, I'd look at locating the relay controls near the damper and just building the control panel UI hardware where the current setup is.

Some example parts:

To get 24VAC to 5VDC to run a classic 5V esp+relay board:
https://www.analog.com/en/products/ds2482-100.html

Dual relay with wide DC input, just add bridge & a cap: https://www.aliexpress.com/item/1005004466280920.html

Classic ESP01 modules; these are pretty cheap and reliable: https://www.aliexpress.com/item/1005004090736903.html

You can configure esphome with a switch interlock so it doesn't try to drive the open and close control lines at the same time.

If you've got at least three lines running to each damper site, you can re-use one of those to provide a direct signal from the control pad ESP to the relay ESP so button presses can work when the HA/wifi is down.

jpm, to random
@jpm@aus.social avatar

Contains: 100% isopropanol

sniff sniff

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@jpm I discovered today that some tentacled beast snuck in and ate all my 4.7k and 10k resistors.

timrichards, to history
@timrichards@aus.social avatar

I like this shot I took just after sunset on Saturday - my new iPhone does a great job with after-dark photography compared to the previous one (which was five years old).

This sculpture is a tribute to the Great Petition, an enormous scroll of signatures in favour of women's voting rights which was presented to the Victorian Parliament in the 1890s. It's located just behind the Parliament building.

PCOWandre,
@PCOWandre@jauntygoat.net avatar

@timrichards Aah, I've seen that petition. Was always a popular item on the repo tour.

decryption, to random
@decryption@aus.social avatar

deleted_by_author

    •
    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @decryption I know someone trying to offload a Tektronix colour laser if you're interested?

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @decryption I'll email the guy and ask. From memory it's a big bastard, A3, CYMK, proper postscript, ethernet, etc.

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @decryption The model is the Phaser 7300. There's also a spare parts Phaser 7300 with a dead motherboard. Duplexer unit installed in good machine.

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @decryption They're absolutely free. Zero cost. He'd like to suggest you'd be doing him a big favour by clearing space in his garage so he can put more power tools in there. He's had them there for some years, so I don't imagine they'll be going anyway in a month.

    jpm, (edited ) to random
    @jpm@aus.social avatar

    USB hotplate pulling double-duty this morning, before I build up a few more of the PCAL6534EV breakout boards

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm What's causing the shorts? The solder balls melting together?

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm Do you add solder for BGAs? I always thought it was just flux and heat and the balls melt into place.

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm 🙂

    But if you use more heat, will you get your balls to the wall?

    PCOWandre, to random
    @PCOWandre@jauntygoat.net avatar

    Say, if anyone is looking to get rid of unwanted USB chargers, even the first-gen 500mA ones, I'll take 'em.

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @decryption I'm in! Let me know how much & how to pay the postage.

    I'm building some air quality sensors at the moment and USB supplies make life a lot easier than building a 5V supply with Hy-Link modules and their supporting parts.

    jpm, to random
    @jpm@aus.social avatar

    All aboard the train!

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm I have a spool of solder that smells exactly like the back alley behind a cheap Chinese restaurant at closing time.

    jpm, to random
    @jpm@aus.social avatar

    I suspect that may be structural coffee tar attached to the group head shower sceeen now

    Unrealated: when was the last time you cleaned your espresso machine?

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm ultrasonic cleaning for portafilters?

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm See, now I have some extra justification to pick up an ultrasonic cleaner. I usually just remove the handles from the portafilters and then dump them in a solution of espresso cleaner and hot water for a long soak. Or, err, put them in the dishwasher, which I know is probably evil but does work pretty well.

    jpm, to random
    @jpm@aus.social avatar

    Another little blue box of electronics crimes has arrived

    PCOWandre,
    @PCOWandre@jauntygoat.net avatar

    @jpm Nice!

    Hang on, is the mask covering U1?

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