Changes
/* DIY gaz detector */
** Piezzo
** ...
* PCB order for 30 pieces
** [http://www.circuit-electronique.fr/circuit-imprime-sur-mesure.php] 422CHF
** [http://www.util-pocket.com/electronique/circuit_imprime.htm] ~300CHF
** [http://circuitsimprimes.free.fr/] ~265CHF
** [http://be.eurocircuits.com/shop/ecbasket/services.aspx?lang=en] 280CHF
=== Pictures ===
