My Location

Wookey Hole Wells BA5 UK N 51°13’40.79″, W 2°40’17.21″ http://maps.google.com/maps?q=loc:51.22800%2C-02.67145

My Location

Old Station Approach Burnham-on-Sea TA8 UK N 51°13’47.55″, W 2°59’56.51″ http://maps.google.com/maps?q=loc:51.22988%2C-02.99903

Cryptocoin Mining With Raspberry Pi

Now i’ve clearly missed the boat on bitcoin mining and it seems that unless you have a datacentre crammed full of racks with hardware you can’t make any decent return on it. An ex colleague of mine did ‘well’l on it at one point but not sure if he’s still running it these days. That said it’s something i’ve always been interested in and with a pi sitting idle I thought I would give it a go.

Hardware

Raspberry Pi Model B + Case + PSU
Transcend 4GB Class 10 SD Card
7 Port Powered USB Hub (I had a spare anker usb 3.0 one)
SD card reader/writer
Arctic usb powered fan (the asics run hot!) £5.99 at the time of this article

Software

Win32 Disk Imager
Minepeon

How To

Download and install Win32 disk imager

Download the Minepeon pi image file from their site i’ve also hosted it here MinePeon-0.2.4.6-RaspberryPi.img.zip sha256sum 3b85225252795e53e22f23b07bf54a3423db73112e78f022023b55ec825fe82c as per https://downloads.mineforeman.com/minepeon/sha256sum.txt

Extract the image file

Insert SD card into your reader

Run Win32 disk imager

Select your sd card device on the right i.e [H\] WARNING make sure you choose the correct drive letter or you may end up erasing the wrong drive!

Click the folder icon and browse to the image file you extracted earlier.

Check the destination drive letter is right!

Check the destination drive letter is right!

Click ‘Write’

Once the image has been written stick it in your pi

Connect pi to a monitor and ethernet port on your router

Switch on the pi, the boot screen will load and it will try and obtain an ip via dhcp, it boots really quickly so i missed the ip it got so I did an nmap to find it.

Put the ip into your browser and you will probably get a security warning (just accept it).

Login with

Username: minepeon
Password: peon

You should be greeted with the main dashboard.

hashradashboard

The settings menu allows you to change your password, restart miner ever x hours, define SHA cores on dual mode and specify update url.

The help menu unfortunately only displays “Work in progress”

Update allows you to update Hashra, when I clicked on it it stated “A newer version is available, do you want to Update?” but I have decided not to do this for now.

Back on the dashboard I ntoced that it said “Running in SCRYPT mode” obviously if your only wanting to mine Litecoin for example you can leave it set to this. Below are some mining stats/hash rate etc.

The final selectable options are Scrypt SHA256 and Dual which you’ll need to set depending on what you want to mine, after choosing you will need to ‘Save and restart’.

Coin Mining With Raspberry Pi And Gridseed 5 Mini Part 1

While researching bitcoin mining hardware and was considering purchasing the Antminer U3 as I liked it’s apparent ease of setup and higher hash rate then a usb asic I stumbled upon the Gridseed 5 Chip Dual ASIC Miner GC3355. The Gridssed had similar form factor but the added bonus that it is a dual miner and can do either SHA-256 (Bitcoin) OR Scrypt (i.e litecoin) and even both simultaneously.

Specifications

Dimensions
9.5cm x 7cm
Weight
418 grams
Power input
12v DC input
Cooling
Large heatsink and fan ensure it runs cool
Hashing Speed
Mode SHA256 (Bitcoin) Scrypt (Litecoin/Dogecoin) Power Consumtion (watts)
Dual Mode 8 gh/s 300 kh/s 60 watts
Scrypt Only Mode OFF 330 kh/s 7 watts

Software

As it was always the intention to use my spare Pi B as the controller I spent some time looking for suitable compatible software. One thing I wanted specifically was a web based control panel so I could setup monitoring on a seperate screen and for the ease of learning what all the differnet numbers mean.
I cam across this useful blog post on cryptomining-blog I narrowed my choice down to Scripta and Hashra. On the post they gave the highest props to Scripta however a downside is that it supports SHA-256 (Botcoin) mining only. While this is new to me I didn’t want to limit myself to just Bitcoin so the obvious choice was Hashra as it supports scrypt only (bfgminer), SHA-256 (cgminer) only or dual-mining mode (cpuminer + cgminer).

After managing to win one on ebay I obviously decided to drop my previous BTC/Minepoen project.

How To

Download and install Win32 disk imager

Hashra, they have different images on their site to use depending on your hardware choice. As I will be using the Gridseed 5 Mini I downloaded the following image HASHRA MINI CONTROLA FIRMWARE DOWNLOAD I have also hosted it on theoutpost as an alternative location. sha256sum 7FC32B10DD6CC9B1046954159E9808DB356112A7D686C9597178873F546D1A0E

Extract the image file

Insert SD card into your reader

Run Win32 disk imager

Select your sd card device on the right i.e [H\] WARNING make sure you choose the correct drive letter or you may end up erasing the wrong drive!

Click the folder icon and browse to the image file you extracted earlier.

Check the destination drive letter is right!

Check the destination drive letter is right!

Click ‘Write’

Once the image has been written stick it in your pi

Connect pi to a monitor and ethernet port on your router

Switch on the pi, the boot screen will load and it will try and obtain an ip via dhcp, once it’s finished booting just before the login prompt it should display it’s ip address.

Put the ip into your browser i.e http://192.168.1.211/ and you should get the login page

hashraloginpagefull

Login with

Username: hashra

Password: hashra

You should then see the main dashboard.

hashradashboard

The settings menu allows you to change your password, restart miner ever x hours, define SHA cores on dual mode and specify update url.

The help menu unfortunately only displays “Work in progress”

Update allows you to update Hashra, when I clicked on it it stated “A newer version is available, do you want to Update?” but I have decided not to do this for now.

Back on the dashboard I ntoced that it said “Running in SCRYPT mode” obviously if your only wanting to mine Litecoin for example you can leave it set to this. Below are some mining stats/hash rate etc.

On the right are boxes for you to set your mining pools and adjust the clock rate of your miners.

The final selectable options are Scrypt SHA256 and Dual which you’ll need to set depending on what you want to mine, after choosing you will need to ‘Save and restart’.
After this I logged into the pi via ssh using

User: pi

Password: 3K4Hb8FMeZjQZJEX6scYzZa

I was happy to find that it was running Raspbian GNU/Linux 7 \n \l with apt-get etc installed as well as sudo.

My Location

30 Euston Rd Kings Cross, London NW1 2SA UK N 51°31’50.35″, W 0°7’23.35″ http://maps.google.com/maps?q=loc:51.53065%2C-00.12315

TP Link WR1043 recovery without serial

The tftp recovery method is the same as the WDR3600 except the image needs to be named wr1043v3_tp_recovery.bin

http://www.theoutpost.org/6-techy/tp-link-wdr3600-recovery-without-serial/

My Location

N 52°5’02.77″, E 1°25’59.02″ http://maps.google.com/maps?q=loc:52.08410%2C01.43306

Raspberry PiZero Inside A 4.3″ Monitor Enclosure

As I’m due to tow horses for this years show season I thought it would be a good idea to have a camera in the trailer and monitor in the car so I can see how the horse is doing. I looked at off the shelf systems but they were all £100 plus and a lot weren’t wireless and required a constant power supply for the camera in the trailer. So it got me thinking that maybe I could knock something utilising my used pi zero’s. Project brief My idea is to use a pi zero enclosed in a monitor case and connected to it via it’s ‘TV’ pads and all powered via 5v. The camera end will again be a pi zero in some sort of enclosure running off a usb battery bank.

Read more

Raspberry Pi usb power bank ups pass through

I use my Pi B in my car to do timelapse photos powered off a cigarette to usb plug however I found that sometimes the plug would fall out and thus power down the pi. I also had the problem that even if I wanted to stop for 5 minutes which meant turning the engine off again the pi would be powered down. TO overcome this I thought I would look into using a usb power bank as a mini ups and here are the results of my testing.

I tested for both pass-through charging i.e. a power bank which allows to be charged while powering a device AND ‘UPS’ which is a usb bank which supports pass-through charging with the added feature of power to the connected device (pi) being uninteruppted when the mains charger was switched off/on.

Read more

My Location

Felixstowe, Suffolk N 51°57’08.52″, E 1°20’21.33″ http://maps.google.com/maps?q=loc:51.95237%2C01.33926