I completed my project on controlling the power of the haldex_5 pump. I encountered the Clutch of haldex_5 when buying my Yeti with a mileage of 10000km. I bought a used car, thought to test all-wheel drive, but my yeti got stuck in the seashore! The problem with Haldex_5 is that the clutch needs to change oil more often than expected and the pump needs to clean the filter. The filter is non-replaceable, it is simply a strainer. I think anyone with a modern four-wheel drive car will encounter problems with haldex_5. If the strainer is not cleaned in time, the pump will run at idle because there is no oil circulation, it will wear out and be replaced. But the owner of the car does not feel it, but drives and thinks that all-wheel drive is in order. There is no original indication for this. So I figured I could set up a pump control. Normally, at max pump load current is about 10-12 A. If the pump is clogged with dirt and idling, the current will be low. This can be used to infer the condition of the pump and the operation of the haldex unit. The project involves viewing the pump current as a percentage of the maximum current value and in Amps without tenths. First test max current, then program this value as 100% in the settings display. A module from ebay with ACS712 (20A) is used as a power meter. it should be mounted on the bottom of the car in the pump circuit. I sealed this plate with a Raychem thermal tube. I use one of the original buttons on the car to switch modes. I use a PC817 optocoupler in the circuit so that any polarity can be used to switch and have electrical isolation from the circuit. The SSD1306's miniature display looks very good in any modern car interior dominated by white dashboard lighting. The project shows how this small display can be used for practical purposes and how to use different font sizes. The only misfortune is that the display changes variables slowly, data exchange is too slow. We can discuss it.
I completed my project on controlling the power of the haldex_5 pump. I encountered the Clutch of haldex_5 when buying my Yeti with a mileage of 10000km. I bought a used car, thought to test all-wheel drive, but my yeti got stuck in the seashore! The problem with Haldex_5 is that the clutch needs to change oil more often than expected and the pump needs to clean the filter. The filter is non-replaceable, it is simply a strainer. I think anyone with a modern four-wheel drive car will encounter problems with haldex_5. If the strainer is not cleaned in time, the pump will run at idle because there is no oil circulation, it will wear out and be replaced. But the owner of the car does not feel it, but drives and thinks that all-wheel drive is in order. There is no original indication for this. So I figured I could set up a pump control. Normally, at max pump load current is about 10-12 A. If the pump is clogged with dirt and idling, the current will be low. This can be used to infer the condition of the pump and the operation of the haldex unit. The project involves viewing the pump current as a percentage of the maximum current value and in Amps without tenths. First test max current, then program this value as 100% in the settings display. A module from ebay with ACS712 (20A) is used as a power meter. it should be mounted on the bottom of the car in the pump circuit. I sealed this plate with a Raychem thermal tube. I use one of the original buttons on the car to switch modes. I use a PC817 optocoupler in the circuit so that any polarity can be used to switch and have electrical isolation from the circuit. The SSD1306's miniature display looks very good in any modern car interior dominated by white dashboard lighting. The project shows how this small display can be used for practical purposes and how to use different font sizes. The only misfortune is that the display changes variables slowly, data exchange is too slow. We can discuss it.
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I hope someone in my project will be inspired to use the capabilities of the GCB to operate the SSD1306 for practical purposes.
Excellent posting. Shows what can be achieved!!
Thanks!