PlainDAQ new feature reccomendation.

[AlperenAkkuncu]

Hello everyone, I decided to remove the wi-fi module as Raspberry pico W is out and I am considering adding a new feature.

What do you think I should add?

These are some of the things I thought of adding:

• Storage (RAM, SDCard etc.)
• Variable power supply

What are your suggestions?

[shanemmattner]

The Espotek Labador seems similar to PlainDAQ, albeit with a simpler analog front end and no wireless connectivity. Take a look and see if there's anything worth stealing.

Ideas/Comments

• Use ESP32 instead of RPi Pico W
  • Advantages: Faster, FPU, lower sleep current, longer history in market, cheaper, smaller, professional quality chip, availability
• SD card is a good idea for longer term captures
• Extra RAM is probably useful, is it necessary yet?
• Couldn't the DAC act as a variable power supply?
• Logic analyzer/generator
• Battery circuit
• Larger input range
  • How high of voltage is practical (10v/20v/...)?
• Circuit protection like fuses and TVS diodes

[AlperenAkkuncu]

The Espotek Labador seems similar to PlainDAQ, albeit with a simpler analog front end and no wireless connectivity. Take a look and see if there's anything worth stealing.

Ideas/Comments

• Use ESP32 instead of RPi Pico W

  • Advantages: Faster, FPU, lower sleep current, longer history in market, cheaper, smaller, professional quality chip, availability
• SD card is a good idea for longer term captures
• Extra RAM is probably useful, is it necessary yet?
• Couldn't the DAC act as a variable power supply?
• Logic analyzer/generator
• Battery circuit

• Larger input range

  • How high of voltage is practical (10v/20v/...)?
• Circuit protection like fuses and TVS diodes

Thank you for your contribution

I'll consider all of them, but I don't want to add too much functionality because I want to make something affordable and easy to manufacture. SDCard is definitely great as it's cheap to just add a connector, that's almost no brainer.

Extra RAM is quite good actually, but it's actually a bit expensive, but it might worth it.

It's kind of easy to add variable supply if things works according to my plan. I am planing to build a simple PWM DAC to create a variable supply, we'll see what I can do :)

I'll consider all of them for the future updates, thanks a lot.

Feedbacks like this motivates me.