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Here are quick resume of what I’m working with an another setup using esp32 s3 and a nano. Updated architecture for my Jeep ESP32-S3 fan controller project. I moved the LFT (radiator outlet temperature sensor) processing completely off ESP32-S3 #1 and into the Arduino Nano. The Nano now...

I mange to get the ac signal from the inside ac board. Thanks a lot.

Thanks a lot. This info will help a lot

Hi, can you tell me what cable is the one you used for the ac signal. I have been trying to find it but I have a few solid green cables from the ac dash controller. Thank you for your help

Hello. Honestly, you should use the Zener diode. The fan will start around 4 to 5 amps ( around 20 to 25 % duty cycle). When AC is on, the jeep most likely it will need more than that to keep up. I don’t know what are your ambient temps but here during the summer, will be around 115 f during the...

Hi. In the event that the Arduino Nano fails, the sketch will still follow the LFT sensor readings. If both Arduinos fail, I have the Lingenfelter controller installed in parallel with the Arduinos. In that case, if there is an issue, I can simply turn on five switches and the Lingenfelter will...

this is how the jeeps data shows on my phone.

This is the hardware currently used in my Arduino-based cooling fan controller system. The setup uses two microcontrollers and OBD2 data to control an electric radiator fan based on multiple inputs. Microcontrollers Arduino UNO R4 WiFi Main controller responsible for: Fan control logic PWM...

Just an small example on the log file.

Since I started working with the Arduino, I set up an SD card to store the readings. Over time, I changed the way the fan reacts based on temperature readings, RPM, ambient temperature, and other inputs.

Hello everyone, here is a recap of what I have accomplished with my last sketch using an arduino. I asked ChatGPT to do recap, just want to share. Arduino Jeep Electric Fan Controller – Control Logic Explanation I have been developing an Arduino-based electric fan controller for my Jeep...

A couple of tips I can remember right now. I used this tool to trim the fan. It’s actually very useful. And also, make sure you mark the polarity on the cable if you are cutting it. Read the post at the beginning.

This how it looks on my iPhone. I build an app for it. I’m reading all the data using two arduinos and one obd2 controller. With the Camaro fan also. 👍👍

Hello everyone! Just to share my experience, at 115f ambiente, and driving at 70 miles per hours with the AC on, it will make a difference on the ECT temp and also the air coming out the AC. With the fan off on those conditions, the ect temp will probably go to 220 but the ac will be impacted...

Hi. I would like to take this approach. Can you tell me the steps you take in order to accomplish this project?

Hello everyone. I just want to give you an update on the setup I have using the arduino. My temperatures reading are from 199 F to 205 f while driving below 50 miles per hour with AC on. Driving at 65 miles or more temp will be close to 210 F with ac on. The max amps reading I got so far is...

here is the code for reference // —- Pin Definitions —- const int FAN_PWM_PIN = 9; // Digital pin for fan PWM control const int NTC_ANALOG_PIN = A1; // Analog pin for NTC thermistor input // —- Fan Speed Parameters —- const int PWM_MIN_SPEED = 38; // 15% duty cycle (base speed) const int...

All this was accomplished with the information already provided on this post of course.