Paso 1: fuentes de
Aquí está mi lista:
1 x soporte de batería de 9V (http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_109154_-1)
1 x zumbador (http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_24872_-1)
1 x conector de tope (Stop) (http://www.waytekwire.com/item/30560/22-18-GA-BUTT-CONNECTORS/)
2 x conector de anillo (ojo) (http://www.waytekwire.com/item/30200/22-18-GA-4-RING-TERMINAL/)
1 x Clip de papel (http://www.staples.com/OIC-Premium-Paper-Clips-Smooth-1000-Pk/product_SS2267728)
2 x tornillos (http://www.boltdepot.com/Product-Details.aspx?product=9658)
3 x tuercas (http://www.boltdepot.com/Product-Details.aspx?product=2564)
2 x arandelas (https://www.boltdepot.com/Product-Details.aspx?product=2948)
1 x contenedor de plástico (http://www.usplastic.com/catalog/item.aspx?itemid=42761)
1 x tapa de envase de plástico (http://www.usplastic.com/catalog/item.aspx?itemid=42769)
1 x pila de 9V (http://www.ebay.com/itm/Wholesale-Bulk-Lots-Panasonic-Super-Heavy-Duty-Batteries-AAA-AA-C-D-9V-/380804323339?ssPageName=ADME:L:OC:US:3160)