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by bholland84
Wed Mar 20, 2019 10:34 pm
Forum: General discussion
Topic: arm ml processor
Replies: 2
Views: 230

arm ml processor

Hello all, If you haven't heard, someone is building out an ARM processor to do ML. https://developer.arm.com/products/processors/machine-learning/arm-ml-processor This seems like a really great idea for a HAT. Is anyone willing to build it out or help me build out a HAT for it? I can program but I ...
by bholland84
Sat Mar 09, 2019 3:50 am
Forum: General discussion
Topic: Is there a cheap and reliable UPS for raspberry pi 3b+?
Replies: 52
Views: 3268

Re: Is there a cheap and reliable UPS for raspberry pi 3b+?

Lets get real here for a second. The Rpi3b+ is a whole 35$. An 8gb SD card, more than enough for Raspbian desktop installs is 10$ while a 16GB SD card is 20$. If you manage to destroy your rpi3, you are out 35$. If you manage to destroy your SD card, you are out about 10$. If you absolutely NEED 24/...
by bholland84
Thu Mar 07, 2019 5:29 pm
Forum: Beginners
Topic: GPIO Resources
Replies: 4
Views: 219

Re: GPIO Resources

https://www.raspberrypi.org/blog/new-magpi-essentials-book-simple-electronics/ I know that adafruit has a few books too. TBH, most tutorials are not very good. They are either too advanced or too simplistic. Books are where you probably want to be. Oh yea, the 40 pin gpio should be the same across a...
by bholland84
Wed Mar 06, 2019 3:47 pm
Forum: Python
Topic: running two functions simultaneously
Replies: 16
Views: 1598

Re: running two functions simultaneously

Okay, so the real answer is that you can't. The GIL (global interpreter lock) will prevent exactly what you are trying to do. There are ways around this using multiple shells but let's just avoid that. BTW, this is the one area where python fails and the hacks to get around the GIL are really bad. T...
by bholland84
Wed Mar 06, 2019 3:37 pm
Forum: Advanced users
Topic: Ping sweep of my network
Replies: 15
Views: 1075

Re: Ping sweep of my network

This is actually the exact opposite way to do it. You don't want to check to see if something doesn't work. You want the thing that doesn't work to report it doesn't work. What I would do is figure out a way to physically attach something to the network devices that check to see it is running and re...
by bholland84
Wed Mar 06, 2019 1:46 am
Forum: Beginners
Topic: Controlling Raspberry Pi wirelessly
Replies: 3
Views: 298

Re: Controlling Raspberry Pi wirelessly

Run a Django website on your pi using nginx and connect to your pi from your network. I would assign an ip address from your router to your pi's mac address. If you want to connect to it from your ip, create your port forwarding rules to assign port 80 or 23 to your pi. Now you have a fully function...
by bholland84
Wed Mar 06, 2019 1:38 am
Forum: Beginners
Topic: Will IKEA KOPPLA power supply 5V 2.4A work with a Seagate Expansion Portable Drive, without external power source?
Replies: 14
Views: 994

Re: Will IKEA KOPPLA power supply 5V 2.4A work with a Seagate Expansion Portable Drive, without external power source?

Get a good power supply. The rpi ones run at 5.25V so even voltage drops are not a problem. I wouldn't be cheap with power. I have 1 drive attached and there isn't a problem.
by bholland84
Mon Mar 04, 2019 4:25 am
Forum: Networking and servers
Topic: Using transmission over a VPN
Replies: 5
Views: 2461

Using transmission over a VPN

Hello all. I wanted to provide the means to use the raspberry pi 3 as a transmission server over a VPN. This includes a kill switch using ip tables. This is fairly complex so I included a markdown file describing exactly what I did to make using transmission to torrent over a VPN work. Feel free to ...
by bholland84
Mon Jul 23, 2018 2:56 pm
Forum: General discussion
Topic: Y splitter for power pins?
Replies: 3
Views: 646

Y splitter for power pins?

Hi all, I have a bit of a problem. I have a few breakout boards and not enough power and ground pins. I don't need a lot of draw (very low amp boards) but I do need a few more 5v or 3.3v pins and better-placed ground pins. This isn't for passing data but just for power and signal voltages. Also, it ...
by bholland84
Tue Mar 14, 2017 3:56 am
Forum: Troubleshooting
Topic: Cannot ping or ssh over WiFi
Replies: 5
Views: 1742

Cannot ping or ssh over WiFi

The subject says it all. I booted up my pi using the vanilla SD card that came with the pi, attempted to ssh into it over wifi, it didn't work. I tried to ping it. That didn't work. I plugged it into my router, both work. When it isn't plugged into the router, I can access anything online, including...

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