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I have bins full of components an have written many basic codes but nothing this complicated yet , if i posted this in the wrong section i apologize

As for the "air solinoid" what i meant was a pneumatic solinoid.
And the boost can be controlled by this solinoid,  if the solinoid is not energized then the car wil only boost wastegate pressure. If the solinoid is energized then the pathway goes through a regulator witch will increase the boost pressure.

Your project sounds very interesting indeed.

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Programming Questions / Re: nano timers
Last post by cattledog - Today at 07:25 am
Did you set PB1 as an OUTPUT?
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Thanks man , It worked
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Hi

You can find the two images attached. Yeah but that's okay right? they should be different.
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General Electronics / Re: Circuit Schematic Question
Last post by ShermanP - Today at 07:11 am
I don't understand what you're saying about the MCP73871.  Charge termination is described in Section 4.7 of the datasheet.

Here's  an article about lithium charging:

https://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

Included there is this statement:

"Li-ion cannot absorb overcharge. When fully charged, the charge current must be cut off. A continuous trickle charge would cause plating of metallic lithium and compromise safety."

Also see the "trickle charging" entry on Wikipedia.
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Audio / Re: Piezzo trigger working pro...
Last post by Grumpy_Mike - Today at 07:08 am
What are you using for a schematic to connect the sensor to the Arduino?

Yes this sort of thing will happen because the sensor output rings and it will pass through the threshold value many times. You can try making this threshold value higher, or add a small delay just after you detect a hit ( send out a MIDI message ) or address the problem in hardware with a capacitor.

This is the sort of signal you are seeing from your sensor.

Notice the multiple edges on the signal as the sensor rings above and below the threshold. Note here the logic low indicates a hit on the sensor.

Note from that site that what he calls a zinner diode is in fact a zener diode. The code is very naive and many times longer than it should be.
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Deutsch / Re: RFID Projekt und EEPROM Sp...
Last post by noiasca - Today at 07:08 am
dein Sketch aus dem Eröffnungspost macht aus den gelesenen BYTES folgendes

Code: [Select]

for (byte i = 0; i < mfrc522.uid.size; i++)
{
code=((code+mfrc522.uid.uidByte[i])*10);
}


warum auch immer. Aber so stehts halt da.

einen anderen Sketch hast du nicht gezeigt. Aber da blank zwischen den Zahlen sind, nehme ich an, der andere gibt die gelesenen Bytes einfach Byteweise mit blank aus.

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Reserved : Arduino PUI code
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Sensors / Implementing a DHT library
Last post by cheche_romo - Today at 07:01 am
Hi I know there are plenty of DHT libraries available to use, but I need to build mine for being able to port it to other embedded systems, the thing is that I can't seem to understand this one wire communication protocol.

I understand that the DHT sends 40 bits, but before you need to negative pulse of at least 1 ms for it to notice you are polling data.

Before the data transmission begins the aduino should recieve a logic low of 80 us followed by a logic high of 80 us. This is where it gets all wrong, because I am getting a pulses of around 300 us. Can someone point me to a datasheet that is actually translated? Can someone explain a little bit more about this protocol?
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Reserved : Arduino DTU code
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