Raspberry Pi Forums

mattmiller

does

sudo synaptic-pkexec

get you anywhere?

mattmiller

The only viable way for such a quantity is (as you've worked out) to make 20 single purchases for the PiZero and PiZeroW

Any UK distributor is allowed to sell you 20 PiZeroWH so that might be an option for you if no-one in USA will do so

mattmiller

JFI Some routers/switches suppress TCP/IP broadcasts so that can bring such projects to a halt

mattmiller

There has been an minor issue with shorting 3v3 to 5v causing the PMIC to die. We've done all that we can to prevent this sort of user error from damaging the board.

Does that mean changes have been made to to the original Pi3B+ design to mitigate this issue?

Is so , what changes have been made?

mattmiller

<> means not equal to

I don't program in Python 3 but try replacing with != and see if that works

mattmiller

As @gordon77 points out - I used Python 2 - hopefully it's just the print's that need translating

mattmiller

I use all sorts of physical computing devices - Pi, Arduino, Microbit and Crumble - all the others need control from another computer so remoting into the Pi is intriguing enough

mattmiller

Google for Amazon Dash button projects as this is exactly what they do - listen out for a Dash button powering up

mattmiller

If you can afford to use another Pi with a camera and you can mount it to look across the area, you can get it to decide whether your car is exceeding its area bounds and send it a signal (i recommend MQTT for this). The hard part is getting the car to be uniquely recognised - you can use colour for...

mattmiller

I've used MQTT to send positional information of a robot to/from a laptop with a camera
Once you've got the hang of using MQTT, its easy to use for this sort of thing

mattmiller

JFI I just tried rebooting my Pi3B+ to see what happens and its kept its MAC address of b8:27:eb:7f:21:68 so it doesn't happen to them all

mattmiller

Hi
Could you describe what is not working for you in more detail?

And what is your end goal in wanting both working at the same time?

mattmiller

@bensimmo - have you replied to the wrong post?

mattmiller

The best VFM way to use a Pi is to plug in a keyboard,mouse and screen. - fraction of the price of a Pi Top setup If your having to move your a class set around then an integrated solution is more convenient. If your Pi are staying within one school, I'd personally run them headless and VNC into the...

mattmiller

Got it now ta - didn't know the metal thing with raspberry logo was the WiFi chip!

mattmiller

#LOL
I looked for a triangle shape but couldn't find it it (eyesight genuinely not good any more) - what big thing is it near ?

mattmiller

JAAMOI Where is the wi-fi antenna on a Pi3B+ ?

mattmiller

Are you suggesting that instead of rattling on ad-infinitum (as is normal) that people should move on?

#Radical

mattmiller

Just had a quick look at it - I don't think it will run well at all on a Pi - looks very resource hungry

So I wouldn't go to the trouble of trying to compile it myself

mattmiller

I don't use any of my Pi as day-day machines - I use them for programming and gpio type stuff I've seen a few of these threads about is it suitable/is it not suitable as desktop machine so I decided to try it out just now (Pi3B+) Launched Chromium - loaded in gmail - all OK Loaded up BBC news websit...

mattmiller

I played with midi a while ago - this thread might give you some pointers to getting started

viewtopic.php?p=1275176

mattmiller

I've got two sensehats and not noticed any unreliability and I suspect its not a common issue You really have to test things like this out with a known reliable power supply. I have one official Raspberry PSU that I use for this (I use other ones for real-world projects) Until you've tried it out on...

mattmiller

For some strange reason, no-one at RPi seems to have noticed that this issue keeps on being raised

mattmiller

The amazon dash technique is just a program running that detects a device joining a LAN- it just waits for a specific MAC address to appear. You can use something like a WEMOS D1 mini and use its reset button to make it disconnect and reconnect to your LAN and then detect it rejoining Alternatively,...

mattmiller

JFI - You can now get Pi friendly ultrasonics that don't need resistors and work from 3.3V supply

I highly recommend using them instead of the old 5V ones

example of a 3.3V one
(note no metal can in-between the sensors)

https://www.ebay.com/c/564102643

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