I just noticed this easy entry into FPGA'S on Sparkfun: https://www.youtube.com/watch?v=dbQj3vNcPAY

@berkseo said in Temperature and humidity sensor with 1.54 E-Paper display:
... At the moment there is one problem, the lack of space in atmega328.

Maybe use an nRF52832 instead? Relatively speaking, they have much more available memory. It would be a shame to lose the nice look of your display.

Here's the finished unit:

What it does is completely eliminate the audible PWM noise from the fan on the Prusa I3 MK3. Now it can run practically silent.

For this project box that I'm making (actually printing it as I type this), I found an easy way to add ventilation: use a hex infill and turn off the upper and bottom layers.

As you can see, it can still have standoffs for screwing down a PCB and for securing a lid.

@nca78 By the way, were you ever able to get multiple different interrupts working?

Here we are a year later, and I guess there's still no final silicon for the nRF52840?

Thanks. Unfortunately, none of those resources had the part identifiers for the parts that I have. So, lesson learned: I'll create my own ID catalog every time I buy a receive a new part. That way, if need be, I can identify it later.

I thought there would be a website where I just type in the letters/digits on a chip and it would tell me what it is. Couldn't find one. I tried googling. Nope. Is there a place to go to find out? I have what I think may be some PFET or NFET smd chips, but I want to find out for sure what they are and then their datasheets.

Surely it can't be this hard? Where do I go to find out?

@sundberg84 Different SMD capacitors?

@nca78 said in Best options for a low current display for a battery operated node?:

By the way I realized there are others drivers from Microchip with even lower power consumption, like PCF8551: at 3.3V <0.6uA supply current for the IC and down to 2.5uA supply for the LCD, it would mean an always on LCD below 5uA. Added to cart but it will take time before I place order and even longer before I have a PCB to test it...

Sounds like a winner!

@nca78 said in SMD Reflow Oven / PID:

remotely following the reflow profile for this solder type

To approximate the reflow profile, did you manually adjust the temperatures by hand while looking at a clock or something?