MTB 3x9 to 1x9 conversion... part deux.

A few test rides quickly demonstrated that a single-speed specific 'narrow wide' chainring was needed (the chain dropped whenever I went all the way down the cassette).

I went for the Race Face 'narrow wide' (cheaper from the US on eBay).

http://www.raceface.com/components/rings/rings/single-ring-narrow-wide/

Half the weight and easy to install... and it looks pretty good...

Let the testing begin...

Raspberry Pi hack #1

Floppy music...

Starting with a clean or dirty SD card..

1. Ensure the card lock is disabled
2. Download chose distribution
3. Use Win32DiskImager (or FlashNul) to write OS image to SD card.

I chose Noobs (Raspbian) then started from scratch with a Raspbian image because I'd downloaded loads of chuff onto the SD card.

4. Run config - sudo raspi-config
5. Change hostname
6. Expand disk
7. Enable SSH
8. Reboot
9. Install Xrdp - sudo apt-get install xrdp (to allow RDP connection)
10. Use Notepad++ with NppFTP plugin to edit (python) and putty/plink to execute.
11. Test GPIO by enabling the 'SD' onboard LED (goled.py)

Pin assignments for floppy music: