Alternate switching of 5 relays. After each lap of relay switching, there is a situation when all relays are disconnected. Pulse OFF PULSE turns off the relay immediately. The next impulse turns it on again.
unique 24-bit high accuracy hx-711 to measure every thing more accurate with XOD IDE time number of sample, gain is equal 80h and chose your pins for Dout and SCk connected to your module and UPD on loop or what ever you want