InaMORata 2.0: Difference between revisions
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You'll need a hot air gun and a soldering iron (plus whatever you use to assemble the Mo-Ra, and attach things to it). | You'll need a hot air gun and a soldering iron (plus whatever you use to assemble the Mo-Ra, and attach things to it). | ||
==Microelectronics== | |||
* Solder the ESP32 onto the perfboard | |||
* Solder the 3x Molex 4-pin fan headers onto the perfboard | |||
** It's best to solder all 4 pins, but you **must** solder the last two | |||
* Wire the 3V3 and GND pins of the ESP32 to the right side's +/- channels | |||
===For PWM speed control=== | |||
* Wire the fourth pin (PWM) of each fan header to pins 33, 32, and 25 on the ESP32 | |||
===For tachometry=== | |||
* Wire the third pin (tach) of each fan header to the other side of the perfboard | |||
* Solder a 10kΩ resistor to the + channel to the tach pin's row | |||
* Solder a 3.3kΩ resistor from each tach pin's row down to the next row | |||
* Solder a 0.1nF capacitor from each of these rows to the - channel | |||
* Wire these same rows to pins 5, 22, and 23 on the ESP32 | |||
===For ambient temp sensing=== | |||
* Solder a 4.7kΩ resistor from the + channel to some row | |||
* Wire this row to pin 4 on the ESP32 | |||
* Solder the yellow (data) wire of the DS18B20 to this same row | |||
* Solder the black (ground) wire of the DS18B20 to the - channel | |||
* Solder the black (ground) wire of the DS18B20 to the + channel | |||
==Power== | ==Power== | ||