Scioly.org

kendreaditya wrote: ↑November 4th, 2019, 4:58 pm

TheMysteriousMapMan wrote: ↑November 4th, 2019, 3:51 pm With these clarifications, would an Arduino Uno still work? I'm better with the microcontroller software/circuit construction than the microcontroller hardware.

Yes, with the spesifcations, the Uno is legal.

Yeah, I'd agree that any microprocessors with an onboard ADC would be legal. As far as I know, all Arduino's have a built in ADC. External ones may be better but I guess they're all out. According to this, Raspberry PIs don't have ADCs so this rule clarification makes them illegal too (unless you can do this without an ADC).


Teaching the Raspberry Pi how to read analog inputs is easier than you think! The Pi does not include a hardware analog-to-digital converter, but an external ADC (such as the MCP3008) can be used, along with some SPI code in Python to read external analog devices.
https://learn.adafruit.com/reading-a-an ... i?view=all

But according to the rules, RPIs are allowable:

Devices must be built using a microcontroller or microcontroller board (e.g., TI Innovator, Raspberry Pi, Arduino), a display, LED lights, and a participant-built sensor/probe.


In the end, the biggest problem with the clarification is that what it states and implies conflicts with the stated rules.

Did anyone notice that analog sensors (with a linear function) predict with greater error at colder temperatures (i.e. closer to 0 C)? How are you guys compensating for this? I think piecewise functions were mentioned earlier.

Does anyone know of any microcontrollers with a high-resolution onboard ADC? The best one I have found so far only has 13 bits of useful resolution (16 bits with 3 noisy bits).

I am reading the temperature in a loop. Will the event supervisors wait for 2 minutes and take the reading or they will take the temperature closest to the thermometer reading within the allotted time of 2 minutes.

They banned PCBs

Are through-hole prototyping boards still allowed? Being forced to put everything on unreliable breadboards or solder everything together directly would both be bad.

TapuCosmo wrote: ↑November 8th, 2019, 8:59 pm Are through-hole prototyping boards still allowed? Being forced to put everything on unreliable breadboards or solder everything together directly would both be bad.

I think it's too ambiguous. The event rules seem to be being made up as they go along. I'm very disappointed in how poorly thought out the event has shown itself to be.

TapuCosmo wrote: ↑November 6th, 2019, 4:00 pm Does anyone know of any microcontrollers with a high-resolution onboard ADC? The best one I have found so far only has 13 bits of useful resolution (16 bits with 3 noisy bits).

How do you find out how many bits are noisy? From the documentation or another way?

sciencegirl03 wrote: ↑November 10th, 2019, 7:54 pm

TapuCosmo wrote: ↑November 6th, 2019, 4:00 pm Does anyone know of any microcontrollers with a high-resolution onboard ADC? The best one I have found so far only has 13 bits of useful resolution (16 bits with 3 noisy bits).

How do you find out how many bits are noisy? From the documentation or another way?

I read on the Teensy forums that the onboard ADC actually outputs 16 bits, but the official specs list it as 13 bits due to noise.

https://forum.pjrc.com/threads/41911-Te ... post144190

Just asking for clarification, does the display on a calculator/laptop count as the display?