ssd – Cubicgarden.com…

Plotting and harvesting Chia cryptocurrancy for a more green crypto future?

I have admit over the last 2 months I setup a cryptocurrancy rig in my flat. Now when most people think about cryptocurrancy they think of bitcoin and the absolute insane amount of power going into mining bitcoins. This is why when I saw Bram Cohen (creator of BitTorrent) talk about creating something different (proof of space+time) I was always interested. To be fair I since BitTorrent I’ve been watching what he’s been up to, Bram is just one of those serial entrepreneur I keep an eye on.

After hearing about Chia, I downloaded the Linux app and got it up and running on a old laptop I use for bits and bobs. I would have used one of my my Raspberry PIs if I had Ubuntu installed. I plugged in a external USB to SATA SSD which I was using to run my old Dell XPS13 work laptop, when the internal drive got screwed up. Then plugged in a old USB to SATA caddy/docking bay with one of my old 2TB mechanical hard drives from my old server (pre NAS).

My Chia plot

Then left it plotting and harvesting my 1 single plot for a month or so.

At the time, the estimated time to win a Chia was 8 months. As I had the laptop on doing other things all the time, it wasn’t a big deal for me. Actually removing my server and replacing it with the NAS, 2x Raspberry Pis and this laptop is actually less electricity than my single home made server with 7 drives and 4 fans. I hear most of you say wtf! I do have a lot of devices on in my flat and my electricity is high compared to typical single person but everything else (heating, water, etc) is low.

It was about 4-5 weeks when I was telling someone about Chia and noticed I had harvested 2 chia’s unbeknownst to me. To be clear I have 1 single 100gig plot and although I tried setting up 2 plots afterwards in parallel, I decided it was too much for my old laptop’s little quad core CPU and switched back to a single 100gig plot again (to be clear its more the parallel part which was the problem and CPU is only really used)

Chia CPU and Memory load in Htop

With all this in mind, I was introduced to the Reddit subthread for Chia, where I saw people building massive rigs to plot and harvest. Its quite insane and then hearing how Chia is being blamed for shortages in HDDs and SSDs. Of course why most people are interested in Chia (including myself) is the proof of space & time rather than proof of work. This realistically could be far more sustainable than proof of work models like Bitcoin. I say “could” because seeing these massive rigs seems to throw oil over the notion of Chia’s green attributes.

Although its tempted to add some more plots, I’m not going to change my setup because its sustainable for me. Little has changed on my network or on my physical desk. Getting in early was something very good but I got lucky with 2 Chia already.

Yesterday a friend mentioned Elon had tweeted about Tesla not taking Bitcoin for their electric cars.

Tesla & Bitcoin pic.twitter.com/YSswJmVZhP

— Elon Musk (@elonmusk) May 12, 2021

I can’t say anything profound about Chia except I’m more than interested because its not just a speculated currency like Bitcoin. Although the price is super surprising for a new cryptocurrency. I said similar about Ethereum because of the smart contracts, NFTs and other things. The currency side is only slightly interesting while things like ChiaLisp for Identity spikes my interest.

The Asus C434 Chromebook

Asus Chromebook Flip C434 review image 1

I recently bought myself a new Chromebook. I considered getting a Dell XPS13 (which is my work machine) or Lenovo X1 carbon but decided I wanted to replace my old Asus Chromebook which I was giving to my parents to replace their very old Samsung Chromebook.

Its been good to have my own laptop as a backup when my work laptop goes wrong for what ever reason (i’m currently running it off a external SSD). I have enjoyed the Android integration in the past but when I learned about the Linux integration and I was sold.

I opted for the i5 version with 128gig of storage and 8 gig of memory. Why? Well I decided it needed to be slightly more powerful and act a bit more like a full laptop if it was going to run Linux apps. I see this Chromebook as a laptop I can use for most things including audio/image editing. Originally I got a good deal on a refurbished version which was great except Bluetooth was broken and it had to go back. I then bought this laptop brand new and it was shopped and delivered in all of 18 hours!

So far I have only installed htop, inkscape, Joplin, audacity, barrier, cheese and firefox in the linux terminal (love that its ian@penguin in the terminal and I have firefox installed!) then decided to install Flatpak on ChromeOS, I considered installing Snap but it sounds problematic currently.

Just checking out a bunch of ChromeOS blogs and I found this reddit faq useful to fix my linux install when it broke after I installed it and shutdown my chromebook too early.

Generally I’m very happy with this Asus Chromebook and its a good size, weight and I still love the tablet mode.

Pacemaker big battery replacement

Thanks to our excellent lab technician Elizabeth. I bought a 3.7v battery to replace the one in my 2nd pacemaker. I previously had replaced the 1.8 inch SSD with a SD card, so knew there was more room in the pacemaker case.

I had hoped to buy a very thin battery which I could slip under the SD card but I couldn’t find one with a higher capacity than 500mAh. Instead I looked for the highest capacity I could get which fit into the same battery space. I found a few 1100mAh batteries but then finally found one which was 1500mAh and the same voltage.

Old Pacemaker with new 1500mAh battery

I unfortunately couldn’t didn’t quite get the right size, I was about 1-2mm’s off in height. The only way to make it fit was to remove the brackets which protected the old SSD/HD from the battery. As there was no drive anymore I decided its ok to remove them. With them gone, I could shift the battery over a bit and fit it in.

Old Pacemaker with new 1500mAh battery

With some great soldering from Elizabeth, I was able to get everything back in the case and screw the whole thing together.

Looking forward to doing similar with my main pacemaker device, maybe?

Pacemaker device finally upgraded with a SD card

This time while upgrading the Pacemaker device it was a success. Its a strange combination because I got a Micro SD stuck in a SD card which is stuck in a Compact Flash card which is connected to the Pacemaker device with a tight Zif cable.

Its not so tight as when I had the 1.8inch SSD but the zif cable is still not in the best position it could be if it was shorter, as I noted on my original pacemaker device.

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Next stop is to upgrade that battery. I’m thinking about a larger flat battery which can lay on top of the compact flash holder?

Upgrading the pacemaker device with a SD card, not this time!

Its a short story (not in effort and time). I tried it after a colleague suggested it instead of SSD a while ago. I tried it but found the card reader the Kalea Informatique adapter, didn’t support SD cards over 32gig. The description said 64gig but everytime I restored the pacemaker firmware it would only format to 32gig. Even using Gparted (like partition magic) to extend the Fat32 partition caused the pacemaker to no longer be accessible by my laptop (it comes up as generic Linux storage device).

I haven’t given up, I’m returning the Kalea adapter and have bought a Kalea adaptor converter but the compact flash version. Yes in short it would be a ZIF LIF to Compact Flash to SD card.

Hopefully this will actually work

Upgrading the Pacemaker’s hard drive

Been doing some of the odd jobs I’ve been meaning to do.

One such task was finally buying the right SSD from Amazon and replacing the old Pacemaker hard drive.

I was looking at the pacemaker forum where someone posted how they replaced their original hard drive with a Solid State Drive (SSD). So after much time I decided to buy the Kingspec 1.8inch drive from Amazon. Its only 64gig big but to be honest with the old drive I was only using 32gig anyway.

For those thinking about doing the same theres a number of things to bear in mind… You need a ZIF 40-pin SSD/PATA Solid State Disk (MLC type). Zif is the connection and its a ribbon connection like you see on motherboards.

Everything was pretty straight forward till it came to putting in the new drive.

As the forum post wrote…

DO NOT MAKE THE SAME MISTAKE I DID AND RELEASE THE ZIF RIBBON FROM THE ACTUAL PMD MAINBOARD ITSELF! IT WILL MAKE YOUR LIFE EASIER IF YOU LEAVE IT IN PLACE AND ATTACH THE NEW HARD DRIVE TO IT!

Well somehow I started to rip the ZIF ribbon when moving the drive about and so I was forced to use the longer version which came with the SSD. That extra length is a real pain as you have to fold it without breaking it when putting the device back together.

Carefully I put the whole thing back together and as the post says, it came on and complained the device needs a firmware update. After doing that and loading all the music back on to the device from the pacemaker app I was back in action again.

To date everything has worked and the battery life is much better than with the hard drive. Things seems a little more punchy too, so menu updates, etc are a tiny bit quicker (but it was already pretty quick). Can’t wait to put in the new battery and boost that up too.

As you can see in the photo, I’m planning on replacing the battery at some point. The battery seems easier but will need some soldering as the one I got has no connector. From the forums it looks like the battery is a 3.7V 1600mAh lithium battery Polymer while the one I got from ebay is a 3.7V 1000mAh lithium Battery Rechargeable Polymer Li-Po. The hope is that my pacemaker battery which back in 2007 lasted on average about 5hours but only last 30-40mins now will jump to about 3-4hours with 1000mAh.

Pacemaker hard drive problems

It was always going to happen…

A portable dj device which I tend to walk around with while mixing to myself. I accidentally dropped while in the middle of recording a mix. Ever since its been acting a little weird and worst still crashing mid mix.

The song which seems to trigger the hard drive to start clicking happens to be JS16’s Rosegarden 2.0 ironically.

Anyway after 6+ years of use I think its about time I made some upgrades. The great thing about the pacemaker is its pretty much a Linux PC. So a lot of the upgrades should be pretty simple. Of course the pacemaker community can help with everything…

First the hard drive, going with my wired, tired, expired. Its time to move to a solid state drive. I only tend to use about 30gigs of my 120gigs of pacemaker storage. So I’m thinking about getting a 64gigs or even 32gigs… The drive as you can imagine is needs to be a 1.8inch drive, and needs to be ZIF/PATA rather than SATA. According to the post there are two different ZIF connections 0.2 mm and 0.3 mm, although its not clear which one I actually should get.

While I’m doing that I might as well do a replacement on the battery which lasts about a hour right now. Although I discovered I could charge the pacemaker over USB while using it if the USB is pure power and not a computer. Of course I also have the AC adapter but nothing beats having lots of battery power.

This looks to be better done in a workshop?

Thanks goodness the Pacemaker isn’t made up of custom hardware bits…