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(Updated) [Staking] Reddcoin Core client GUI wallet on a Raspberry Pi Model 3B

Intro

This thread is an update to my first Reddcoin staking tutorial that was written 7 months ago.
 
The reason for the update
My Reddcoin Core software crashed and became unusable. My Raspberry Pi 3B would lag and freeze, I couldn't stake anymore.
 
Instead of just redoing everything the same way, I wanted to see if I could improve on 3 points:
 
The updates
 
If you would like to tip me
Writing a tutorial like this takes time and effort; tips are appreciated. My Reddcoin address: RqvdnNX5MTam855Y2Vudv7yVgtXdcYaQAW.
     

Overview

 

Steps

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     

Video

https://www.youtube.com/watch?v=Snr5e8bzftI
This video shows how long it takes to start Reddcoin Core.   TL;DR:
     

Extra

Backup
Backup your wallet to prevent losing the RDDs in your wallet! There are two methods to backup, do both. Make new backups if you create a new receiving address!
 
 
   
Boot with only 1 USB drive plugged in:
Make sure only the USB drive (with the swap partition and data partition) is plugged in when you boot up your Raspberry Pi. This to make sure the swap partition (/dev/sda1) is recognized correctly.   If you boot up with multiple USB drives, Lubuntu might see the USB drive with the swap partition as the second drive (instead of the first drive), and ignore the 2 GB swap partition. If this happens, starting Reddcoin can render the Raspberry Pi unresponsive.
   
Connection issues If you have issues syncing the blockchain because you have 0 network connections, please follow the instructions in this thread.
   
Start Reddcoin Core easier
Run a shell script (.sh file), so you can start Reddcoin just by double clicking on an icon on your Desktop.
   
Minimization options
Adjust minimization options, so you can safely press on the X button (the close/exit button on the upper right corner).
   
RealVNC VNC Viewer (client) and VNC Connect (server): To remote connect to the Raspberry Pi, I use VNC Viewer ad VNC Connect from RealVNC.
 
   
Chromium as browser: The updates break Firefox, the browser crashes when you try to run it. Install another browser, Chromium, to solve this issue.
   
Updates / Upgrades
If Software Updater shows up and tells you that there is updated software available, do not install the updates using Software Updater. Use LXTerminal to update Lubuntu.  
     

Credits:

   
Credits in previous tutorial:
submitted by Yavuz_Selim to reddCoin [link] [comments]

[Guide] Python-Trezor on cold offline Raspberry Pi

I am happy to report that the python-trezor command line scripts work successfully on a Piper which is really a Raspberry Pi running Debian wheezy.
This does require you to connect your Piper online initially, so I recommend buying a new 4GB SD card and flashing the piper firmware if you have already used piper to generate cold offline keys. You'll need this for the hexagonal screws and this for the wiring
You can download the latest firmware ISO here and here is how you burn the image
From there I did sudo apt-get update and installed the Trezor dependencies including cython, libusb, python-trezor, cython-hidapi, trezor-common and ran sudo python setup.py build/install as per these 2 guides edit : and pip install trezor as per stickac (I have not yet tried the electrum 2 beta parts of the guides, as I don't require cold offline electrum 2)
https://bitcointalk.org/index.php?topic=122438.msg9262821#msg9262821
http://www.reddit.com/TREZOcomments/2jp9uk/tutorial_install_electrum_20_beta_with_trezo
This still does not install the english wordlist which you will need to do manually.
Edit : Adding BIP39 library should also install english.txt
You might also want to download my hidden passphrase/PIN entry python-trezor fork
Lastly I needed to unplug the USB mouse from my keyboard hub, in order to provide Trezor with adequate power.
Confirm that everything is working
./cmdtr.py list
./helloworld.py
Pull out the Ethernet cable, and never plug it back in (without first wiping the SD card)
Congratulations you can now initialize and restore Trezor - in a fully cold offline environment - and if you wish, provide your own entropy
Expert tips :
Delete your shell history
semi-securely delete files off SD flash
Version 2 :
I have added support for the latest electrum 2.0 beta, trezor support and btchip support
Update to the newest github versions
navigate to /python-trezor and git pull navigate to /python-mnemonic and git pull
Update libraries
sudo apt-get update sudo apt-get upgrade sudo apt-get install -f 
Install dependencies
sudo apt-get install python-qt4 python-dev pyqt-dev-tools python-pip sudo apt-get install python-usb libusb-dev sudo pip install --upgrade pyusb 
Install btchip support
mkdir btchip cd btchip get https://hardwarewallet.com/zip/add_btchip_driver.sh sudo bash add_btchip_driver.sh git clone https://github.com/btchip/btchip-python cd btchip-python sudo python setup.py install 
Tests
cd samples python getFirmwareVersion.py cd ../btchip python btchipPersoWizard.py 
btchipPersoWizard.py should bring up a GUI setup wizard if core.usb is setup properly
cd ../.. git clone https://github.com/btchip/btchip-c-api.git cd btchip-c-api mkdir bin make cd bin ./btchip_getFirmwareVersion 
Install electrum 2.0 Beta
git clone https://github.com/spesmilo/electrum cd electrum sudo python setup.py install pyrcc4 icons.qrc -o gui/qt/icons_rc.py python setup.py sdist --format=zip,gztar electrum 
File > New > Hardware wallet. Both Trezor and btchip work as they do on OSX, apart from the Pi's slow CPU taking ages to generate the HD tree and Sync.
Limitations
At this stage a Pi is too slow to receive btchip's 2fa OTP confirmation code, with the auto-type saturating the text buffer. I'm confident Nicholas can fix this in firmware. Edit: an ipad2 + Apple CCK is too slow to buffer the seed about 1/4 times. Edit 2: an iPhone5/retina iPad mini + Lighning to USB camera cable works with btchip with iOS 8.1 with selected text editors.
You can use btchipPersoWizard.py to restore a BIP39 mnemonic, however btchip's HW1 is unable to support on-device BIP39 seed+passphrase, but this feature might be added to the electrum plugin later.
I don't know if greenaddress CRX will work on piper, there doesn't seem to be an official armhf build available from google, and the latest sudo apt-get install chromium version is v22 whereas Chrome is at v38. (it might be possible to download https://github.com/greenaddress/WalletCrx and pack/drag-drop the extension manually in developer mode)
submitted by Aussiehash to Bitcoin [link] [comments]

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