Chris Wolfson wrote: ↑Sun Jan 17, 2021 2:12 am
If you do not have the room to fit diodes, you can not fit them. I was so naive to think all MosFet switches would need one. Many MosFet I know have them build in, anyhow. Could that be a solution?
Hi Chris,
there it is, the classical misunderstanding.....
The used Mosfets already have a integrated body diode (max reverse current 2A).
AO3400A.png (48.24 KiB) Viewed 5827 times
I was talking about the external flyback diode (parallel to the inductive load). In most cases it is always better to eliminate the inducted reverse energy direct on the source.
Using flyback diodes parallel to the injectors would also affect the timing as the switch off duration would be longer and could interfere your injection timing. The inductivity of the injectors isn't too large to cause severe problems with that mosfets. But further tests will be done for sure....
Chris Wolfson wrote: ↑Sun Jan 17, 2021 2:12 am
It should have a great future, as long as you stay sub 100 US$. Also, the lower the price, the safer you stay from copy cat´s.
We want to stay at less than 50 US$ for the complete ECU with connectors if this is possible. And the primary goal is not to produce them for the masses. We will release all sources that everybody could produce them
easily direct by his own or some people order them together. Or somebody else will produce them. We aren't afraid of copy cats as it is intended that others will produce them. This is no design to generate money, it was made for the public!
The last batch of 5 quite full assembled prototype pcbs was only 135 Euros, shipped and taxes already paid by the producer. And the more you order, they will get cheaper. In the minimal batch of 5 pieces the revision 0.0.6 was something around 27 Euros per pcb direct to your home.
This was the primary goal of this ECU, a cheap thing that works and you can use in most use cases with a maximum of 4 cylinders and already integrated wideband controller. Not more and not less.
Best regards,
Chris