Solenoid engine V8 crossplane - with hall sensor and arduino

Home made solenoid engine with 2 hall sensors and arduino pro mini. One sensor for 360 degree rotation and one for 90 degree rotation. Firing order is like a crossplane V8 4 stroke engine. The cylinders are pushing, not pulling like most solenoid engines. It is also possible to run it as a 2 stroke. Then two cylinders will fire at the same time. Each coil has an indication led, mosfet driver and diode on top of it. Al parts are home made.