Hacker News new | ask | show | jobs
by MadnessASAP 18 days ago
The spec page says 100 kHz BW on the oscilloscope, the FAQ says 400 kHz. In either case calling it an "oscilloscope" is a stretch, its the ADC channels on an MCU.

I find it curious that all their promo shots seem to only show the back of the board. I couldnt find any of the component side, or any information about what components are used. My guess would be:

- a very small dual rail supply

- AVR or STM MCU

- Signal generator is PWM through an RC low pass filter

- Oscilloscope is potentially just the input through a resistor network to shift +/- 5V to 0-5V, maybe a buffer to keep input impedance high.

I just don't see $170-200 of value here, or anything close to that.

2 comments

Even weirder: the Kickstarter campaign says it’s 4 MSPS per channel. 100kHz bandwidth with 4 MSPS per channel just doesn’t make sense. However, they have “verified” 400kHz on their Kickstarter. Not sure who verified it, but it’s verified.

The Kickstarter does have product photos of the back in a gif but be forewarned: they don’t include any chip designations.

The specs are underwhelming, but I could see the value to a beginner being in the software that accompanies it tightly integrated with parts kits and instructions. I'd honestly prefer to see a logic analyzer instead of a mediocre oscilloscope; I feel like the projects that most people learning want to do these days are digital, and simple logic analyzers are more amenable to being cheap while still being useful.
I feel like building an nLab would be a far more valuable learning experience then using one.

The caveat being not just as a DIY soldering kit but as a full "course" in the design and construction of it.

Its got a power supply, an MCU, analog I/O, digital I/O. Learning the theory of how to read a 100kHz analog signal is far more valuable then a device that can read a 100 kHz signal.