Martin Hapl

Results 32 comments of Martin Hapl

Interesting. I have just connected Noctua fan (via 74AHCT125 - QUAD LEVEL-SHIFTER) to GPIO19 (it is supposed to be one of the hardware PWM pins), and it seems to work...

Well, this is what most people struggle with. The documentation says: _External pull-up is not necessary as the signal is pulled up to 3,3V/5V inside the fan._ People discuss this...

Guys, you are forcing me to buy a scope and check what's going on with my fan that it works :-) Anyway, people recommend to use https://github.com/joan2937/pigpio, that should be...

It is weird. The enclosure plugin suddenly lost the ability to control the fan, and I had to install pigpio + hardwarePWM. That works just fine...

I would love to have one, especially if there's a service that can ship an assembled one to Europe. My only reservation is the fan. 30mm fans tend to be...

Heh, look no further: https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf

I very much agree with external 40mm fan (and save space on the board). The processor on 4B doesn't get hotter than 60º with no fan anyway. This is the...

Very nice board, I was thinking about doing something similar, glad that I don't need to refresh my Eagle skills :-) Can you please add a relay, pretty please? That...

I see, it is a hat. I can't say I like hats, but since there's everything, it is probably OK. What is the standoff height to mount it? And fait...

If you want to keep it simple, then it would be enough to trigger specific action (send PWM value) at a configured time. Basically I need to turn the display...