I really wanted to control my Enzo pedal using my main MIDI controller : the Behringer FCB1010. For this, I needed a MIDI Box to convert a 5-pin MIDI plug into a MIDI jack. Indeed, all Meris pedals are equipped with a TRS jack to use either a MIDI box or an expression pedal.
On their online shop, Meris are selling their MIDI I/O 89$ : way too much in my humble opinion... I decided to create my own DIY MIDI box.
First of all, here is how the MIDI jack is used by any Meris pedal: