The Sinclair QL Forum

therapist bills with Emacs

Luckily it has one built in

Write the code, worry about the colour of the bikeshed later!

Two guesses!

1) Impedance of TV is too low and its pulling too much current - put an amplifier between the two
2) Floating earth, the TV and QL don't agree on what 0v is and there is a large voltage differential - stop connecting them it could cause damage.

I've tried connecting the Speech Synthesiser to my screen (basically a TV with VGA input and a 3.5mm jack for audio input - works fine with QSound output)

But all I get is a very short crackle and then the speech module dies until power cycled

I'm assuming there is some kind of electrical ...

Because you are using lots of flying wires you might be reaching the capacitance limit on the bus.

Time to learn kicad and get some PCBs

No damage at all.

Today I received ... the keys to our new house in Dyke, a small village near Forres up here in NE Scotland. It's taken three years but we've finally found a house! The bad news is, the mobile phone reception there is worse than it is here, so our hope of mobile broadband working better than here ...

t0nyt wrote: Tue Sep 09, 2025 1:27 pm Damn, I now have 2 different devices using the same address ID and neither has the option to change the address ID

Time to learn about i2c muxes then

I think we should get you a "Member of the I2C Club" badge now

No idea on your problem!

But not all i2c addresses are valid so you can speed up your loop by skipping the invalid ones!

https://www.i2c-bus.org/addressing/