Adventures with I2C & Minerva Mk2

[t0nyt]

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 look forward to it!

[t0nyt]

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 look forward to it!

Well it _looks_ simple enough... have ordered a couple to have a play

[t0nyt]

Looking at the CAD drawing for the Mk2 remake it doesn't look like there are any pull up resistors on the mk2 board

I'm wondering if the odd things I'm seeing with a couple of devices could be down to a lack of pull-up's?

Could I cause any damage by fitting a couple of 10k resistors somewhere between the mk2 and the i2c devices please?

I understand what they do to the i2c bus, but am not confident enough to just shove them in yet

Many thanks
Tony

[XorA]

No damage at all.

[t0nyt]

No damage at all.

Many thanks, will try fitting a pair just before the breakout board to see what happens then

Many thanks
Tony

[XorA]

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

[t0nyt]

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

Maybe

But the devices in question (like 32kb) still play up when connected directly to bus on their own without the breakout

[t0nyt]

Mind you, the device I have most trouble with has it's own pull up resistors on-board, so I may be barking up the wrong tree here (for now at least)