Fixing SPEEDUINO Noise & Connection Dropout Issues | DIY ECU PART-5

ON THIS EPISODE WE FIX THE NOISE MYSTERY THAT HAS BEEN HAUNTING US FOR WEEKS.
SPEEDUINO IS A WONDERFUL ECU BUT IF YOU GET STUCK IN A NOISE OR FALSE SIGNAL ISSUE THEN IT WILL TAKE AWAY YOUR GOOD NIGHT SLEEP.

[@Zagatto7]

In fact, the original Speeduino is an amateur project, without any protection against electromagnetic interference and in the VR conditioner, precisely where it is most needed for the vehicle to function properly. These PCBs do not have grounding planes (there should be at least 3), do not have adequate filtering on the 12V line (Pi filters with inductors and capacitors). The VR conditioner used is very sensitive to electromagnetic noise (EMI and RFI), normally generated by the switching of coils, injectors, actuators, relays and electric fans in any vehicle. To make matters worse, the VR conditioner is mounted on a separate PCB, making it even more sensitive to EMI and RFI, which does not occur with professional ECU designs. I have been dealing with these problems for more than 2 years on a Speeduino V.04.3b and the best solution is to use a professional PCB design, with Pi filters, several grounding planes and a properly grounded metal case, as on the Speeduino DropBear. Only then will your problems end. Alternatively, I recommend using Hall sensors and shielded cables in the rotation and phase signal, eliminating the VR conditioner, soldering the configuration jumpers directly to the PCB and installing the PCB in a properly grounded metal box (Faraday cage immune to EMI and RFI) . It is also essential that the harness is well constructed, with wires of a diameter compatible with the signals, braid the sensor wires and ground them directly on the negative pole of the battery, and use high quality spark plugs and suppressive cables. Even doing all this and adding a large filter capacitor to the cooling electric fan, I still have problems with the rotation signal failing while the vehicle is driving and the engine turning off at idle when the electric fan is activated with V.04.3b. I plan to switch soon to a DropBear or a Professional Programmable ECU.

[@NaughtyNut]

Very true, the VR sensor is so sensitive that I can trigger it just by touching it. I shifted to Hall sensor finally after getting tired. Now it’s all good.

[@vg23air]

oem obd2 has shielded cable and the ecu is in a metal box grounded

[@vg23air]

shouldn't your ecu be in a steel box that is grounded to the frame

[@kawaiirunnersdriftclub]

Not really, Speeduinos are built different

[@vg23air]

@@kawaiirunnersdriftclub so they reject the RF signal interference of a passing trucker running an illegal 100 watt cb amplifier ?

[@kawaiirunnersdriftclub]

@@vg23air I think speeduino will get interference no matter what. In some cases it doesn't have a case like mine and the one in the video, so we have to get creative...

[@andresrodascassagne8911]

The noise comes from imput voltaje , you could try to update the the output capacitors to a more capacitance value from the the 5 volts regulator toi the a more stable voltaje, but if you do that the moment when you conect it to the source 12volt you are gonna get a spike because of the bigger capacitor, in that case you could try to make another Imut voltaje board , similar to the inverter igbt welder they use a resistor in parallel with a capacitor .

[@NaughtyNut]

the noise is really annoying. we are going to shift from VR to HALL. hopefully that will resolve the issue.

[@giorgioc.8394]

I think the newest SMD board and firmware solved this problem. I have a very similar setup as yours and I had zero noise problems

[@lavanaykumar1810]

Great progress from before man , NOICE liked it 👍

[@elcascoviejo5347]

why is this happening, i have a similar problem that the arduino stop procecing information traing to start

[@beau9765]

add a bluetooth module HC06 not spp-c, they work well and wont disconnect with noise.

[@NaughtyNut]

Yes that’s coming up next

[@andresrodascassagne8911]

I saw a video from a guy showing its speeduino running nice , he didn't talk about it but I saw another tipe of capacitor atvthe imput , a bigger ones but not ceramic

[@NaughtyNut]

ya i've tried the capacitors. still there is noise.

[@zx3]

Did you use resistor spark plug?

[@NaughtyNut]

Hard to get em here in India

[@Elchapo62]

The coils too close to wiring harness, use resistor coil wires move coil close to spark plug. The last coil too close to vr pick up.

[@vg23air]

good video

[@vg23air]

kzbin.info/www/bejne/d2iXhnahiZ6Jj6csi=vtQHUXGxutwxWLur

[@revanjoshi2824]

Please participate in Formula drift with this build 🔰

[@NaughtyNut]

Would love to do that.. but need four digit power figures to participate in FD. But yes I’ll surely put all my efforts.

[@revanjoshi2824]

@@NaughtyNut not necessary bhai. People are competing with 800 hps too. So you can also represent India there 😉