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Thanks for the comment. I need to get 0.1mg resolution data (@ 1000samples/sec) from an accelerometer for my project. Since I couldn't find any accelerometers with ranges smaller than +/- 1g, I need a lot of resolution on the ADC to achieve 0.1 mg resolution. But I gave up on this particular...

so I tried single-ended mode like you said above (but without a reference voltage source; I'm using a standard 3.3V regulator for AREF). I'm still getting noise (using all the capacitors and AGND etc). It seems it's either that the AREF needs a decent reference source, or the only way to get...

BTW, I absolutely don't mind ditching Arduino IDE if I have to (to access the differential pins). I might still be a noob in plain 'ole C, but I'm willing to try (and my experience in other languages will help). Besides, I've programmed a few ATMega's to blink LEDs and other cool stuff. How hard...

I'm sorry for the late reply. I had some issues with the data being sent from the T3 to the PC (through USB Serial), and so I spent a lot of time trying to debug it and fix it. Basically, whenever I use Serial.println to send commands, I would notice that (after about 10 mins from startup), the...

@Constantin thanks again for the massive amount of knowledge passed down. I will try to respond point by point. - I tried bypassing the internal regulator in the T3 (using 3.3V reg), and I kept getting the same noise, with and without caps. In fact, things started getting crazy with the analog...

xD I meant kOhms (ouch) lol, I was also looking at filters at that time and confused the units xD

@Constantin I just realized that I never knew the impedance value of the signal. It turns out it's around 32kHz, but I have no idea what that means (is it too high in this case?) But, first, the attempt to bypass the internal voltage regulator. I already previously cut the VIN pad (in fact, I...

I wanted to thank you for taking the time to reply. :D I ran it off 3 AA batteries (4.5V) regulated to 3.3V (by a typical LD33V fixed regulator). However, I connected that through the VIN pin (had no idea that I could've bypassed the internal regulator and straight into the 3.3V pin). Also, I...

Just an update (to help others): I tried the ADC of the Teensy3, and I noticed it had a TON of noise on it (practically not even close to 16-bit. Maybe even 13 or 12). It was THAT bad. So, I thought the noise could be coming from the USB power. So I ran the Teensy off of battery power...

thanks for the information. The Teensy probably won't be doing a lot of stuff (only reading ADC and sending through USB), but I guess there is no way to find out how much noise there will be without trying it myself. Thanks again, everyone! May the Teensy be with you! :cool:

My bad for asking an RTFM-worthy question; I just checked the website and realized the Teensy 3.0 has a 3.3V regulator. Also (obviously), its I/O pins operate at 3.3V

@Nantonos I previously looked into dedicated ADC chips (similar to the ADS1115), but the low sampling rate makes it unusable for my application. I haven't had much luck finding a dedicated ADC with high-resolution and high sampling rate and decent price. On top of that, most of the high...

Thank you all for helping! I'll buy a Teensy 3.0 and test it out. I'll let you know if I need more help! :)

I can't believe I missed that pinouts link XD Great post! Certainly helpful! I realistically only need about 2k samples per second, so I'm probably not going to write my own code :D If this thing pulls off 2k SPS with 16-bit resolution, then HELL YEAH I'm buying one! :D but I do notice that...

hey everyone, I'm new to this microcontroller programming stuff, so bear with me. I just need to double check that I have the details about the ADC correct here: The Teensy 3.0 has the MK20DX128 microprocessor, and so the datasheet here has the details. Check page 37. So does this mean the...