Hi Martyn, I'm afraid I never learnt to solder, so that option is not for me. However, Amazon had the following when I searched, would this or similar be suitable do you know?martyn_hill wrote:Hi Sparrowhawk
As regards power-supply - I am using a regular USB-type 'wall-wart' supply that can supply up to 1A, but I hacked the mini-USB end off and soldered-on the 2.1mm plug (+5V to the inner conductor) - which are pretty standard and easy to get a-hold of.
https://www.amazon.co.uk/gp/aw/d/B071G22MST/
Thanks
Jean-Yves