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Booster Plug - What's Actually Inside
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Booster Plug - What's Actually Inside
Quote:You still need a controller for that module as it's just a digipot with i2c interface, controller could be made very small and cheap using pickaxe with ds18b20 digital temp sensor and programmed to suit (for clever folk a bare pic would be cheaper but I'm not clever),the digipot itself would be cheaper off board and on the same board as the pic.
It's a digipot + I2C + temperature sensor.

The resistance/temperature curve is stored in NVM

 

Once programmed it can be used as a standalone device, and even it's startup setting can be configured. It then replaces the thermistor (3mA max current), and just needs a stabilised DC supply

 

I think the only homework required is to measure the resistance of the original air intake thermistor across it's temperature range, program the DS1841 to match it in terms of the temperature/resistance curve, and use the second NVram LUT to add the required 5% or whatever extra fuel across the temperature range.

 

The manufacturer's datasheet calls it a temperature controlled resistor https://www.analog.com/media/en/technica...DS1841.pdf

 

A potential problem is that one side of the wiper track is ground referenced, but I'm not sure if thats also the case for the thermistor fitted to the air intake, but if it is, it ought to be a straight swap. Program once, and that's that

<p style="text-align:center;">Ohlins, PC3, fuel cut defeat, +4deg timing, 17" front wheel.


Messages In This Thread
Booster Plug - What's Actually Inside - by drewpy - 18-12-2023, 01:35 PM
Booster Plug - What's Actually Inside - by Tor - 08-01-2024, 03:10 PM
Booster Plug - What's Actually Inside - by thong - 13-01-2024, 06:30 PM
Booster Plug - What's Actually Inside - by fixitsan - 18-01-2024, 03:16 PM

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