We have progress
I have been busy swapping the Genboard into the intended Alubus 'Vems' case. While at it I soldered new EGT2, VR2 and P259 chip on board, so far everything checks out
, although i have no way of checking the VR chip
Anyway. I source some 0.6w Metal film resistors and soldered everything onto the P&H board excluding the flyback diodes and transister as discussed with Jean. One thing i did do was solder on the resistor and zener diode which is also part of this circuit, This wont be a problem will it Jean?
I also changed the resistors on the Genboard which is after the FET driver chip and before the FETs, changed them to 102s (1000 ohm). see picture, resistors circled in yellow
I removed the four FETs from the middle row and moved them to the ignition chanels to keep the output capebility. At the same time I installed two new IGTBs for possible future COP/ sequential ignition.
After moving the above FETs, i soldered on wires from the P&H board to the FET pads, checked everything was good with no shorts. The P&H board is mounted, inverted, on the top part of the Alubos case, with one end of the board in the second pcb chanel, with the other end fitted with two stand offs. The FETs are clamped in a similar fashion to the Genboard with insulator sheet between the case and the FETs, FETs checked for any shorts to the case or each other. All good. I think its quite neatly packaged to be honest. Maybe worth considering a longer board to use the pcb slots and just clamp the FETs, obviously VEMS specific then, but how many people would use these to justify the need
It may be possible to get two of these boards in the case back to back, as Jead had designed for Megasquirt, but it will be damd tight with the wiring, but not impossible
I now need to rewire the Econoseal connectors and reconfigure the P259 outputs back to my original configuration, rewire the injector to the correct chanel, remove the resistor, and start again with the calibration
.
Oh one other thing, I remover the Transient surpression diode from the flyback wire inside the case so I can install it in the loom instead, that way I can keep an eye on its temperature and remove it if required. I know you stated to remove it Rob, but Jean said to keep it, so im going to do the research on it to find out one way or the other. Still not really sure on whether its required or not.
Just a note on the config of the injector, currently the single injector is configured in the H[0] tabele as 0-1 with the divider as 1. The question i am asking, is if I set the divider to two, will this reduce the injector firing by half? IE instead of firing every 360 degrees per cycle, it fires once every 720 degrees per cycle??
Reason I ask this is, as i have mentioned previously, the injector Im using is providing far more fuel that it did on the OEM system and wodering if the divider is a factor in this, not knowing how many times the OEM system fired the injector per cycle.
Onwards and upwards, I aint smoked it yet
