> For the complete documentation index, see [llms.txt](https://mstrthealias.gitbook.io/teensy-fan-controller/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mstrthealias.gitbook.io/teensy-fan-controller/hardware/prototype.md).

# Prototype

Schmart Board based Teensy Fan Controller prototype v1:

![Schmart Board based prototype - top](/files/-M1XDbOaxar3NI0SqLaz) ![Schmart Board based prototype - bottom](/files/-M1XDbOcDHvZv4jEVr9q)

Design files available at: [Hardware/Schmart Board](https://github.com/mstrthealias/TeensyFanController/tree/master/Hardware/Schmart%20Board)

## Notes

* 1% accuracy resistors should be used, though resistances are configurable to calibrate readings
* The jumper in the middle ties v3.3 to ADC reference voltage
* The capacitors are not described in the prototype layout
* Only 3 of the 4 sensor resistors are soldered in the images
* The 4 fan headers in a row should be split in the middle, or possibly re-arranged in a 3 x 2 configuration