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Arduino

A Pile of Used Tech

February 3, 2020

I recently had an idea occur to me that I might be able to pick up used Raspberry Pis off of eBay more affordably than buying them new. I didn’t really find a ton of savings, but I did pick up an auction for a lot of various parts for fairly cheap.

I am not sure what I’m going to do with all of this, but it seemed like a deal for around $50. I was worried that it wouldn’t all be included, but it was. Not everything is what I had hoped though. Two of the three Raspberry Pi 2s seem to be dead. I’ve tried several trouble shooting methods so far. They turn on, but don’t seem to real SD cards at all.

The arduino is a genuine Arduino, which is nice, but its a fairly older model. Not a huge issue, but it is what it is. The screens were a nice bonus. I’ve been looking into getting a screen of some sort of my Pis, possibly for a RetroPi handheld build. I have not tested the larger screen yet, it seems to work off of a funky daisy chain of an extra board and some cables. I did get the smaller screen working… ish.

It’s a nice little touch screen that fits nicely on top of the Pi. I have not had a chance to properly troubleshoot it, but the touch works kind of funky on it. For one, it seems to function more like a track pad than a straight touch. Two, the mouse cursor only wants to move along a diagonal axis across the screen.

This all kind of feels like a configuration issue however, so there is some hope. Plus I am not sure I really need a touch interface for a RetroPi handheld build.

There’s some other fun stuff that I have not had a chance to mess with yet. There were a ton of ultra sonic sensors. I’m not sure what exactly these could be useful for, but I am wondering if they would be able to do 3D imaging of an object or a space.

There’s some funky board with a digital display on it that seems to be some sort of power board. I am not sure I’m going to have a use for this at all.

Lastly, there is a Raspberry Pi camera module. I have not had a chance to test it out yet, but like the screen, this was something I’ve been wanting to try out.

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Posted in: Arduino, Raspberry Pi Tagged: Arduino, Electronics, Raspberry Pi

Internet of Things, Internet of Stuff

June 21, 2016

I wanted to take some time to touch on my every changing collection of Internet of Things style devices.  Honestly, it’s kind of iffy what constitutes an “IOT” device, but for the most part I’m sticking with “cheap” and “non traditional computing devices”.

The chief player among these are of course…

The Raspberry Pi

I’m up to 5 Raspberry Pis, a B+, two B2s, one B3, and one Pi Zero.  I have already discuss these quite a bit so they don’t need a ton of additional discussion.  The B+ still operates my DNS/DHCP server, one B2 still runs my IRC stuff, one B2 still runs a Minecraft server.  I actually have not yet come up with a good use for the B3 and Zero yet.  I’ve started messing with Windows 10 IOT on the B3 a bit and there is a Retro Gaming GameBoy project using the Pi Zero floating around on Reddit I may have a go at.

Arduino

If Raspberry Pi is the king of IOT, then Arduino is definitely the Queen. I’ve kind of dropped out of doing Arduino projects a bit and dismantled most of the ones I had built.  Other than adding a WiFi enabled board to my set (by mistake, I thought I was ordering a Shield not a board), not much has changed on my Arduino library.

i did try to build a little digital hourglass project I found online but it’s not going super great.  Stay Tuned for More

Next Thing’s CHIP

CHIP is still one of the most annoying and impossible to search for terms online.  I’m up to three CHIPs now, I’ve received my second Kickstarter CHIP and my VGA DIP.  I’ve still been having some bad luck getting my CHIPs to do much of anything.  I tried to build an Amazon Alexa with no luck in the end after a ton of troubleshooting.  I’ve been trying to get Synergy combined and running on one to let it work with my multi monitor set up.

Now that the Kickstarter campaign is more or less finished and the CHIP is reaching a wider audience I’m hoping it starts to get more support online.

Remix Mini

Another kickstarter product, the Remix Mini is a small computer that runs Android as a desktop.  It works pretty well, I mostly used it last year while traveling for work in the Hotel Room.  I have not touched it since, for one simple, stupid reason.  The HDMI output doesn’t support any of my HDMI to DVI cables.  I can’t plug it into a regular monitor, so I just have… not used it.  I could plug it into a TV but it’s effectively a simple desktop machine and doesn’t work as well for a “lean back” experience.  Maybe if I had a wireless KB and Mouse it would work better.

It’s a shame to because I was really looking forward to this one and it runs a lot of my apps surprisingly well.

ChromeCast

I picked up a Chromecast last year on Black Friday. I used it a bit but in the end, it’s ended up in a drawer.  It’s just too much of a hassle and it caused too many problems.  First off, the hassle.  My crappy old Nexus 7 is partially to blame here but in general the lack of any built in interface is just a flat out pain.  Having to dig out my tablet to use it is a pain.

Worse yet, it was causing problems with the Wireless in the house.  I disabled guest mode which eliminated the problem (eliminating the interference) but it’s still kind of lame that it was an issue to start with.

Kindle Fire Stick

A more recent addition to the network, I added a Kindle Fire Stick.  This is effectively the same as the Chromecast, without the hassle and bull shit of needing a separate device to use it.  It’s not completely without it’s issues but it works pretty well.  The main problem I’ve had is that it loses signal, a lot.  It doesn’t work as all directly hooked to my HDMI switch and at this point it’s cabled out and laying out on the floor behind everything to get it away from any interference.

It runs Amazon videos, which I don’t really use, it runs Netflix, which is used a lot.  It also works well with the fact that I buy my MP3s primarily through Amazon.  Another nice bonus, I use Amazon Cloud to backup all of my Photos, so they are all available through the Fire Stick now to view on the TV.

SteamBox

 Another newer addition is the SteamBox.  Specifically, the cheap streaming box.  It works pretty nicely.  I haven’t had a chance to really put it through the loops yet but my first tests worked well.  I’ll probably do a more in depth write up at some point on it.

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Posted in: Arduino, CHIP, Devices, Raspberry Pi Tagged: Arduino, Chromecast, FireStick, IOT, NextThing CHIP, Raspbery Pi

NextThing CHIP and Raspberry Pi Zero

May 10, 2016

Raspberry Pi Zero and Next Thing's CHIPI’ve already briefly discussed my NextThing CHIP computers before. A few weeks ago I was purchasing a Raspberry Pi 3 and found that the store had Pi Zeros in stock as well, so I tossed one on because, hey, $5, and they are apparently hard to find.

These two little devices are pretty similar, but at the same time so different.

Both are small computers, not just microcontrollers like an Arduino, but little Linux machines. Both have GPIO pins, both can be used as a regular “desktop” if you wanted, both cost less than $10… Mostly…

Raspberry Pi ZeroThe cost is where things get tricky, especially for the Raspberry Pi Zero. Upfront, the Pi Zero is only $5, which looks great on paper, and it’s still pretty cheap. That five dollars gets you a small flat circuit board with a few low profile ports on it. Chances are you’ll need a power supply, if you want to be able to configure it at all you’ll also need a way to plug a standard USB hub for keyboard and mouse into a micro USB port. The display out is a mini HDMI port, which you’ll likely also need an adaptor for. The Pi Zero also doesn’t have any sort of case on it. All of this is stuff that you may or may not need, you might have on hand, or, if you’re programming many Zeros, you can reuse the adapters and parts on all of the Pi Zeros you want, once configured.

The point is, after picking up even some cheap accessories, you’re probably looking at closer to $15 for a Pi Zero. Still cheap, just not quite AS cheap.

Next Thing CHIPThe CHIP on the other hand, is $9. It has built in WiFi and Bluetooth, it comes with a little plastic case for the underside of the board, and it comes with an RCA adapter. The RCA isn’t ideal and an HDMI or VGA attachment are both coming (for $10-$15) but the RCA is usable for setting up WiFi easily for SSH or VNC access. It even has built in storage. For $9, you’re pretty much up and running right out of the box. The Pi Zero is actually kind of useless all on it’s lonesome.

That doesn’t necessarily mean the CHIP is better.

Both The Raspberry Pi Zero and Next Thing’s CHIP run an arm based version of Debian (by default, but this could be changed), thus both have a lot of common in terms of what sorts of software can be used. The CHIP however seriously lacks the Raspberry Pi’s strong community. I’ve not been able to find any decent resources for how to even use the GPIO pins, for example. I had hoped to use one of my CHIPs for a project in the garage but I’ve hit some roadblocks.

chipdesktopI’ve actually had lots of roadblocks with the CHIP. Initially they were unstable, requiring a firmware update. I’ve had many strange problems getting software packages to work properly, even when following tutorials put out by others. The closest I’ve come to finishing a project is making a homemade Alexa clone. Even after buying identical parts (Mic and Button really), after trying many fixes and even wiping the thing out and starting from scratch, I still get errors with the Audio about “Period too large”.

Everything being built in is really convenient though. I honestly haven’t come up with any ideas yet for what to do with my Pi Zero. It ends up with some goofy dongles all over it to make it functional and I have 4 full sized Raspberry Pis at my disposal for other projects. I’ve seen an interesting Game Boy emulator build using the Zero I will probably try but so far, it’s pretty much just been running quietly on my workspace counter.

Personally, I think that ultimately it comes down to there is a point where these things become too cheap or small to be useful, at least for my needs. The sorts of projects a smaller board like this may be useful for feel like they would be better suited for an Arduino. Most of the projects I use my Pis for amount to “Hardware VMs”. Single task servers that can easily be repurposed or swapped out (using SD cards).

 

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Posted in: Arduino, CHIP Tagged: CHIP, NextThing, PiZero, Raspberry Pi, RaspberryPi Zero
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