Box double pwm fan temperature control
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# Box double pwm fan temperature control I need to extract more hot air from my wood stove convection tube and I've put 6 fans standard 140mm into [2 ventilation](https://fr.ofenseite.com/7400058-grille-de-ventilation-avec-gaze-metallique-noir-450-x-170-mm) grids 450x170mm it fits like a charm. Need 2 pwm fan controllers ## Dimension of the box : - 90x56mm inside with 3mm wall. - 120x62mm with screw support. ## required : - pwm fan (take the [be quiet! Pure Wings 2 140mm PWM](https://www.reichelt.de/be/fr/be-quiet-pure-wings-2-140-mm-pwm-bqt-bl040-p161430.html) 9,10€ good price/silent ratio, the Pure wings 3 is more silent but +50% price) - [2 pwm controllers for 3 fans](https://fr.aliexpress.com/item/32964848566.html) - 2 thermals sensors (include with the controllers) - [1 thermal switch 45° NO](https://fr.aliexpress.com/item/32989746405.html) - 1 dc jack - 1 fuse 1A + case with cables - 8 screws 3mm - 1 transformer dc 12v 1A ## Connection : - dc jack --> red --> fuse 1A --> thermal switch external --> 2 pwm controllers - dc jack --> back --> 2 pwm controllers ## print instruction : Work without support for me, the holes are to small. In PLA : 20% infill cubic with 0.2 layer, nozzle 0.4mm and print width 0.6 (save time) The cover feet nice on the box with the 0.1mm space I've printed in ABS too, but the cover don't fit well, like to small an same with the holes, maybe my printer or filament to configured more precisely...
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