message: added stepper motor to BOM
diff: @@ -24,16 +24,19 @@ Latest progress on 3d-printed part design is found in
  ### Purchasing source abbreviations
  * **C** = McMaster-Carr
  +* **Z** = Amazon
  | RefDes | Quantity | Manufacturer | Part # | Price($) | Sources | Notes |
  | ------ |---------:| ------------- | ------------------- | ------------:|-----------------| ----- |
  -| 1 | 1 | McMaster-Carr | 92095A218 | 7.64 / 25 | [C][1mcmc] | M5x30mm button head. Axle for bearing. |
  -| 2 | 3 | McMaster-Carr | 91294A128 | 4.82 / 100 | [C][2mcmc] | M3x8mm flat head. Attaches frame to stepper body |
  -| 3 | 1 | McMaster-Carr | 91390A117 | 4.75 / 100 | [C][3mcmc] | M5x5mm set screw. Attaches rotor to stepper |
  -
  -[1mcmc]: https://www.mcmaster.com/catalog/92095A218
  -[2mcmc]: https://www.mcmaster.com/catalog/91294A128
  -[3mcmc]: https://www.mcmaster.com/catalog/91390A117
  +| 1 | 1 | STEPPERONLINE | 17HS19-2004S2 | 14.99 | [Z][1amzn] | Stepper motor. Make sure to get one with the D-Cut shaft |
  +| 2 | 1 | McMaster-Carr | 92095A218 | 7.64 / 25 | [C][2mcmc] | M5x30mm button head. Axle for bearing. |
  +| 3 | 3 | McMaster-Carr | 91294A128 | 4.82 / 100 | [C][3mcmc] | M3x8mm flat head. Attaches frame to stepper body |
  +| 4 | 1 | McMaster-Carr | 91390A117 | 4.75 / 100 | [C][4mcmc] | M5x5mm set screw. Attaches rotor to stepper |
  +
  +[1amzn]: https://www.amazon.com/dp/B07Z1J8JWH/ref=cm_sw_r_cp_api_i_d.zUEbRBKGSVW
  +[2mcmc]: https://www.mcmaster.com/catalog/92095A218
  +[3mcmc]: https://www.mcmaster.com/catalog/91294A128
  +[4mcmc]: https://www.mcmaster.com/catalog/91390A117
  ## Assembly
  