UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

GrahamN · 27th Oct 2018, 9:56 am

I like the idea of 'typing' in the code automatically - apart from the reasons stated above it just seems so flexible, and can easily be modified to suit other computers of that era relatively simply (I'm thinking KIM1, Acorn System 1, etc.).

Anyway, I'm not too hot on circuit design, but I think I'm going to have a go. I did think about Arduino relay boards for real simplicity, but looking up the price of optocouplers on eBay, I find I can get 50 for less than £2 delivered! So - I've placed an order and I'll spend the few weeks until they arrive sketching out some designs.

I quite like the idea of serial rather than USB as again it seems appropriate when using vintage technology - but in any case it's very easy to convert between the two and I'm pretty sure I have some circuits around for driving multiple relays from serial inputs which should be straightforward to modify.

27th Oct 2018, 9:56 am	#113
GrahamN Hexode Join Date: Jun 2008 Location: Burnham on Crouch, Essex, UK. Posts: 391	Re: MK14 schematic revisions I like the idea of 'typing' in the code automatically - apart from the reasons stated above it just seems so flexible, and can easily be modified to suit other computers of that era relatively simply (I'm thinking KIM1, Acorn System 1, etc.). Anyway, I'm not too hot on circuit design, but I think I'm going to have a go. I did think about Arduino relay boards for real simplicity, but looking up the price of optocouplers on eBay, I find I can get 50 for less than £2 delivered! So - I've placed an order and I'll spend the few weeks until they arrive sketching out some designs. I quite like the idea of serial rather than USB as again it seems appropriate when using vintage technology - but in any case it's very easy to convert between the two and I'm pretty sure I have some circuits around for driving multiple relays from serial inputs which should be straightforward to modify.