+ // pcb holder - pcb side only
+ translate([-pcb_len/2-wall, -batt_diam/2-wall, 0])
+ hull() {
+ cube([pcb_groove + wall, batt_diam/2 + wall, base_h + pcb_width + wall - pcb_groove]);
+ translate([-3*(pcb_groove+wall), 0, 0])
+ cube([4*(pcb_groove+wall), batt_diam/2 + wall, base_h]);
+ };