- Wed Aug 30, 2023 4:46 am #64664
chaoschris wrote: ↑Tue Aug 29, 2023 6:59 pmWas thinking of r8 coils or toyota coilsrunesm wrote: ↑Tue Aug 29, 2023 5:45 pm Are the injector drivers capable of 2 injectors per output? And likewise, can the ignition output take 2 coils per output?Yes, the injector outputs are capable to drive two high-impedance injectors in parallel. Low-impedance injectors will reduce this to one injector per channel. Until now there was no long-term test with low-impedance injectors, so this is also theoretical.
The ignition outputs are capable to serve up to 3A per channel. But this would be only possible if you set the coil signal voltage to 12V. Driving the coils with a 5V output signal the maximal current is limited by the onboard 5 Volt voltage regulator. So please don't try to serve coils with a low impedance towards the ground when ignition setting is set to 5 V. Internal pull-ups with a low impedance inside your coils won't have any effect as long they won't exceed the maximum current to ground. You can check the input impedance towards the ground with a multimeter and then do an approximation of the currents on all ignition channels...
What kind of ignition do you want to drive?