WordPress Mix Posts and Custom Post Types in the main blog page
<?
function ng_mix_posts_cpts_in_blog ( $query ) {
if( !is_admin() && $query->is_main_query() ) {
if ( $query->is_home()) {
$query->set('post_type', array('post','yourCPTname'));//swap in your cpt name
}
}
}
add_action('pre_get_posts', 'ng_mix_posts_cpts_in_blog' );
//doesnt show for admin, only runs for main query on blog page