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by bensimmo
Sat Oct 20, 2018 7:53 pm
Forum: Beginners
Topic: Measuring speed with a Pi
Replies: 7
Views: 212

Re: Measuring speed with a Pi

The low power Arduino and similar board probably.
ESP8266 or it newer ESP32 ?

I know of them and people that use them for low power potable devices, logging data and sending it on.
by bensimmo
Sat Oct 20, 2018 5:02 pm
Forum: Beginners
Topic: How to turn off Camera IR LEDs?
Replies: 8
Views: 153

Re: How to turn off Camera IR LEDs?

Technically the LEDs are pulling more power than the camera cable/setup on the Pi was designed for (that came from an RPI engineer). It's why everything, especially a PiZero get very hot when using them. I would measure what the LEDs need, they are LEDs so have a positive and a negative. Unfortunate...
by bensimmo
Sat Oct 20, 2018 10:35 am
Forum: Beginners
Topic: How to turn off Camera IR LEDs?
Replies: 8
Views: 153

Re: How to turn off Camera IR LEDs?

Hi guys i just bought camera from Aliexpress. It's this one: https://www.aliexpress.com/item/New-Raspberry-Pi-3-IR-CUT-Camera-Night-Vision-Focal-Adjustable-5-MP-OV5647-Automatically-Switch/32831783732.html?spm=a2g0s.9042311.0.0.27424c4d9bterb Hope putting link is OK. The camera has those IR LEDs on...
by bensimmo
Fri Oct 19, 2018 6:51 pm
Forum: Media centres
Topic: New TV Tuner from HQ
Replies: 52
Views: 1150

Re: New TV Tuner from HQ

Paul Webster wrote:
Fri Oct 19, 2018 6:22 pm
... and shipping packaging shows uHat (can’t find the micro symbol on phone keyboard) confirming the new name.
Google Keyboard (Gboard)
Then find the screen with the Greek symbols along the top, hold down π for a bit and you get to select μ
by bensimmo
Fri Oct 19, 2018 5:55 pm
Forum: Media centres
Topic: New TV Tuner from HQ
Replies: 52
Views: 1150

Re: New TV Tuner from HQ

Nice photos, can you show the bottom of the board or how you put in on? Bottom of the board here - http://cdn.shopify.com/s/files/1/0176/3274/files/DVB-TV-uHAT-Assembly-2.png Anyone know what the two header holes are for ? EEPROM ? It connects to that little chip that connects to the ID pins. (Top ...
by bensimmo
Fri Oct 19, 2018 5:44 pm
Forum: Media centres
Topic: New TV Tuner from HQ
Replies: 52
Views: 1150

Re: New TV Tuner from HQ

Either try the CEC as mentioned above if connected directly to a TV.
Or try a Bluetooth Kodi remote (I just search and there seems to be loads to choose from :-) )
Or you mobile phone with a Kodi Remote app over WiFi etc.

I've not used one though.
by bensimmo
Fri Oct 19, 2018 5:41 pm
Forum: Off topic discussion
Topic: My ‘senior’ moment
Replies: 1
Views: 71

Re: My ‘senior’ moment

First option sounds like a much better and exciting plan.
Why make it simple for yourself.
by bensimmo
Fri Oct 19, 2018 5:39 pm
Forum: Other projects
Topic: Full moon light ?
Replies: 5
Views: 112

Re: Full moon light ?

Andy, it's not mains really. One last the plug, it is 15V. You can switch it on and off by cutting the cable and sticking a switch of some sort in there. Yo cannot connect that directly to the Pi. Fenyx, if you measure the voltage of the circuit to the LEDs themselves, you will have more idea what y...
by bensimmo
Fri Oct 19, 2018 5:16 pm
Forum: Troubleshooting
Topic: Raspberry Pi and Arduino For Live Sensor Data Plotting
Replies: 1
Views: 25

Re: Raspberry Pi and Arduino For Live Sensor Data Plotting

You haven't given the full error, so have to guess at where its happening. Assuming it is dataArray = ser.readline() methane = str ("dataArray") dataArray is probably coming in as binary (depends what you are sending? Maybe) Then methane is being set to dataArray which is already a string...beacuse....
by bensimmo
Fri Oct 19, 2018 3:07 pm
Forum: Media centres
Topic: New TV Tuner from HQ
Replies: 52
Views: 1150

Re: New TV Tuner from HQ

I guess some people will be looking at SDR capabilities, I've not read the release yet though. I did not find anything useful in that respect when I looked. There is no documentation on the chip used I could find and no one else seems to have had any luck either. Can it do S2 or is it just T2 ? Jus...
by bensimmo
Fri Oct 19, 2018 10:55 am
Forum: Off topic discussion
Topic: Is .io ethical?
Replies: 4
Views: 179

Re: Is .io ethical?

But it is two different situations. One is money wrangling buying and selling and by a government. The other is a company just doing the job. No difference bar one government wishes to make money out of it and managed to front the start while other companies make/have made a lot more out of it. (Art...
by bensimmo
Fri Oct 19, 2018 10:30 am
Forum: Off topic discussion
Topic: Is .io ethical?
Replies: 4
Views: 179

Re: Is .io ethical?

Really, it's just some text after a dot.
People use all sorts, why should the money go to anyone but the people who have the hardware and are administering the few text characters.
by bensimmo
Fri Oct 19, 2018 10:24 am
Forum: General discussion
Topic: Case for stacked hats
Replies: 7
Views: 224

Re: Case for stacked hats

That's the IQaudIO DAQ case so will accommodate the DAQ. Or I at least hope it does what it's designed for. I was then thinking buy the spacers for the middle. But if they say it will not work, I'd assume it doesn't. https://shop.pimoroni.com/products/pibow-modification-layers?variant=1039417249 Car...
by bensimmo
Fri Oct 19, 2018 7:25 am
Forum: Advanced users
Topic: Why is frequency at GPIO 4 (pin 7) only 1/2 the set freq?
Replies: 5
Views: 170

Re: Why is frequency at GPIO 4 (pin 7) only 1/2 the set freq?

You should be able to use piscope http://abyz.me.uk/rpi/pigpio/piscope.html to see what the gpio is seeing. No expert, I've just piscope for switching pulses before. I think you can also use pigpio to create the wave for you http://abyz.me.uk/rpi/pigpio/python.html# hardware_clock but unsure as not ...
by bensimmo
Fri Oct 19, 2018 6:35 am
Forum: Media centres
Topic: New TV Tuner from HQ
Replies: 52
Views: 1150

Re: New TV Tuner from HQ

I wondered when they would bring that out, the rpi-tv overlay had been there since the beginning of the year, at least iirc. Nice to see more useful HATs :-) I guess some people will be looking at SDR capabilities, I've not read the release yet though. Can it do S2 or is it just T2 ? Has anyone brou...
by bensimmo
Thu Oct 18, 2018 7:48 pm
Forum: General discussion
Topic: Case for stacked hats
Replies: 7
Views: 224

Re: Case for stacked hats

And on a look to see what the audio hat is. I see Pimoroni make pibow case for it. https://shop.pimoroni.com/products/pibow-audio?variant=5472074753 I think you can buy spacers to suit and raise your the lid, you can with other pibow setups. I would send them and email or tweet and see if they can s...
by bensimmo
Thu Oct 18, 2018 7:42 pm
Forum: General discussion
Topic: Case for stacked hats
Replies: 7
Views: 224

Re: Case for stacked hats

Ignore me, I've just tried a SenseHAT upside down (the black connector is on the top on a SenseHAT). And what I say is not going to work. Get out the solding iron and fit a some new longer pins to the pi ;-). https://www.ebay.com/itm/5PCS-1-40-40Pin-2-54mm-19mm-Long-single-row-Male-Breakable-Pin-Hea...
by bensimmo
Thu Oct 18, 2018 7:27 pm
Forum: General discussion
Topic: Case for stacked hats
Replies: 7
Views: 224

Re: Case for stacked hats

This is untested as I do not have a poehat, I do have sense hats though with similar passthroughs. On your long pin header were there any spacers? Mine all came with them (and a bugger to get off). Not that you need them I would see how far down you could put it and attach a normal extender header o...
by bensimmo
Thu Oct 18, 2018 5:02 pm
Forum: Python
Topic: Speed of indexing vs looping
Replies: 16
Views: 331

Re: Speed of indexing vs looping

I wonder at which point splicing to and from the half length mark would be quicker than the added time it takes to get the length of the string. That's an interesting question. I tested that, as per other tests - def Check_Four(s): n = len(s) // 2 return s[:n] == s[:n-1:-1] Times came in on the sam...
by bensimmo
Thu Oct 18, 2018 2:04 pm
Forum: Python
Topic: Speed of indexing vs looping
Replies: 16
Views: 331

Re: Speed of indexing vs looping

But again, that very inefficient. You are creating an entirely new string, one character at a time. All you want to do is compare. ... or something. Which will also be inefficient, creating two single character strings as it goes. That's all Python allows for. Underneath the hood it's different. Bu...
by bensimmo
Thu Oct 18, 2018 7:37 am
Forum: Troubleshooting
Topic: Undervoltage detected on old Pi
Replies: 4
Views: 119

Re: Undervoltage detected on old Pi

Check the uUSB connector, remove dirt and check the connections.
I've found loss there before, cable all fine just the connector.
by bensimmo
Thu Oct 18, 2018 7:33 am
Forum: Off topic discussion
Topic: When will Pi Zero W be updated?
Replies: 7
Views: 320

Re: When will Pi Zero W be updated?

There is a well/was well use dual core (on a PiZero style/size device) SoC out there, it was used in the original FireTV Stick, Broadcom Capri 28155 2x 1GHz A9's VC4 and 1GHz RAM (they used it split 512/512) Useful and to Pi Specs, i've no idea. I don't see the point in the large 3.5mm socket. Just ...
by bensimmo
Wed Oct 17, 2018 4:24 pm
Forum: Beginners
Topic: What Command is Used to Display RPi Firmware Number?
Replies: 3
Views: 129

Re: What Command is Used to Display RPi Firmware Number?

The firmware is software
When you update the OS
e.g.
sudo apt update
sudo apt upgrade
It updates the firmware too, if there is a newer one.
by bensimmo
Wed Oct 17, 2018 1:32 pm
Forum: Troubleshooting
Topic: Warranty Replacement
Replies: 3
Views: 97

Re: Warranty Replacement

your warranty is with whoever you bought it off, not the foundation [unless it is a Pi0] Even with the Pi Zeroes the warranty is most likely through the retailer. Apparently not so in the USA (from another thread I was reading this morning) For them it is with the manufacturer. My advice would be t...
by bensimmo
Wed Oct 17, 2018 11:09 am
Forum: Troubleshooting
Topic: SerialException: could not open port /dev/ttyAMA0: [Errno 13] Permission denied: '/dev/ttyAMA0'
Replies: 14
Views: 307

Re: SerialException: could not open port /dev/ttyAMA0: [Errno 13] Permission denied: '/dev/ttyAMA0'

First try sudo systemctl stop [email protected].service sudo systemctl disable [email protected].service (just something I noticed going over what you did, which was basically a bit of everything, be it useful or not) But to get back I would do something like from /boot/config.txt remove dtove...

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