Robbie3337

Ok great, thanks a lot Muttley! I appreciate your help :)

Thanks for the rapid response Muttley! I bought the same power supply and DC - DC voltage buck converter as per your original post. I always ran it on 24V, but I changed it to 18V now without any success. Maybe I should just accept the new MV ranges and recalibrate?

Hi all, I'm having a bit of an issue here. My tank volume stopped calculating correctly and just showed it was full (I didn't fix the calculation yet, so it shows 10284L when full). Upon investigating, I discovered that the MV has suddenly changed after months of reading the same values. We did not change the tank or anything like that. The last "loss of data" is a result of unplugging our whole network to protect our devices from lightning. After restoring power to our network equipment, the voltage had jumped quite significantly. I did not cut the power to any smart device, just a simple network disconnect and reconnect after a few hours. Does anyone maybe know what the issue could be? I can, of course, just recalibrate, but I'm really curious to find out the cause of this change. I'd appreciate any kind of insight on this.

Can you please link the post where one of the forum members de-soldered the chip and replaced it with an ESP32? I'm done with this Tuya rubbish

Hi @fourwp , I have looked at my temps from Home Assistant from beginning of June, as that was when mine was last working without the element. I have attached the results (we were using warm water as well in this timeframe. It basically took 4 hours to reach 60c from 49c I do have a question though, how did you add your Magneto / EMS to Home Assistant? I tried after receiving my replacement unit, but can't remember what I'm doing wrong haha.

Your suspicions about the DFRobot sensor were correct. Thanks for that! I'll be doing the other 2 JoJo tanks as well that's on out farm.

Update: So the issue was indeed the INA219 sensor from DFRobot. When I changed the INA219 with the suggested generic sensor, everything worked, even the tank volume started updating! Thanks especially to @Muttley for your help! I'm going to experiment on the "days of water left" and the "Tank Refill Rate" This is amazing!

Hi everyone, I finally got time to change the INA219 sensor and things are looking very promising. I'm just waiting a bit for more data and then I'll report back. Thanks for the help!

Just an update, I have received the INA219 from PiShop and will be replacing the DFRobot this weekend 😁

LOL, I really hope that won't be the case 🤣🤣 I will surely do so, thank you so much! 😁

I think it's good to have a bit of humour while we struggle with these wonderful devices. It helps taking the focus off of the frustration a bit. But yes, I definitely agree. We will get this right eventually 😂 Thanks for the tip on the DF Robot sensor! I will buy the generic INA219 as per one of your links. I agree with your approach to diagnosing the issue. It will probably only arrive early next week, so I will post back when the new INA219 has been installed. Thanks again!

Haha yes they did 🤣 I did a reboot on my side and my power and current values were restored the same as yours, thanks! It happened twice since your reply, so the second time I added a button to reboot the ESP32 to be able to reboot it remotely which also works. It seems like the jaggered graph is a result of whenever the current and power values go down to 0 or unavailable, because when I reboot the ESP, then the graph begins to normalize after the values restored. The reason I used 2700mm as the height is due to the spec sheet. It seems that the overflow level is at that level. Please see the picture attached. Why do you think that my probe reading outside of the tank has an extra "0" compared to yours? After making the change as per your recommendation in the "Tank Volume" template section in the code, I still cannot get the "Current Full %" and "Tank Volume" readings to work. It just stays at a constant level. I asked claude.ai to adapt the template sensor code to my existing ESPHome code and this is what it came up with: template: - sensor: - name: "Water Level Template" unique_id: water_level_template unit_of_measurement: "m" state: > {% set current = states('sensor.jojo_1_ina219_current') | float(default=0) %} {% set height = ((current - 4) / (12 - 4) * 2.70) | round(3) %} {% if 0.000 <= height <= 2.700 %} {{ height }} {% else %} unknown {% endif %} Does it look fine? Here is my latest ESPHome configuration: web_server: captive_portal: button: - platform: restart name: "JoJo1 Restart" i2c: sda: 21 scl: 22 sensor: - platform: ina219 address: 0x45 shunt_resistance: 0.1 ohm current: name: "INA219 Current" id: ina_current accuracy_decimals: 5 filters: - multiply: 1000 #convert from Amps to mA unit_of_measurement: "mA" power: name: "INA219 Power" accuracy_decimals: 5 bus_voltage: name: "INA219 Bus Voltage" accuracy_decimals: 2 shunt_voltage: name: "INA219 Shunt Voltage" id: ina219_shunt_voltage accuracy_decimals: 5 max_voltage: 32.0V max_current: 400mA update_interval: 10s - platform: template name: "Water Level" id: water_level unit_of_measurement: 'm' accuracy_decimals: 3 update_interval: 60s lambda: |- float shunt_voltage = id(ina219_shunt_voltage).state; float full_voltage = 0.00012; // Voltage at full condition float empty_voltage = 0.00004; // Voltage at empty condition float max_height = 2.70; // Adjust the max height as needed // Calculate water level based on calibration float slope = (max_height - 0.0) / (full_voltage - empty_voltage); float intercept = max_height - slope * full_voltage; float water_level = slope * shunt_voltage + intercept; // Ensure water level is within bounds water_level = water_level < 0.0 ? 0.0 : water_level; water_level = water_level > max_height ? max_height : water_level; ESP_LOGD("custom", "Shunt Voltage: %.5f V", id(ina219_shunt_voltage).state); ESP_LOGD("custom", "Water Level: %.5f m", water_level); return water_level; - platform: template name: "Current Full Percentage" id: current_full_percentage unit_of_measurement: '%' accuracy_decimals: 1 update_interval: 60s lambda: |- float max_full_reading = 12; // Adjust the maximum reading at full water level float min_empty_reading = 4; // Adjust the minimum reading at empty water level float current_reading = id(ina_current).state; if (current_reading <= min_empty_reading) { return 0.0; } else if (current_reading >= max_full_reading) { return 100.0; } else { float current_full_percentage = 100 * (current_reading - min_empty_reading) / (max_full_reading - min_empty_reading); return current_full_percentage; } - platform: template name: "Tank Volume" id: tank_volume unit_of_measurement: "litres" lambda: |- constexpr float tank_radius = 1.10; // Adjust the tank radius as needed constexpr float max_height = 2.70; // Adjust the max height as needed constexpr float pi = 3.14159265f; constexpr float total_volume = pi * tank_radius * tank_radius * max_height * 1000; float percentage_full = id(current_full_percentage).state; float water_level = max_height * (percentage_full / 100.0f); float current_volume = pi * tank_radius * tank_radius * water_level * 1000; return current_volume; Please let me know if you need any additional information Thanks! 😁

Haha, you said it 🤣 I honestly hoped it was my problem, but sadly after updating, it did not work. It's as if the tank volume is just static. 3 Things bothering me are: My calibration value outside of the tank is indeed 0.00004V - I bought the one from DIY Electronics. I have attached a spreadsheet (history (9).csv) of the reading last year when I first connected the device. After copying your new code and adding the template sensor in the "configuration.yaml" - I still cannot get the Tank Volume & Current Full % to work. In the Developer Tools, I get an "unknown" output when testing the code for the template sensor. I attached the sensor ID I have as well as the states that Home Assistant is reading. The "Shunt Voltage" graph seemed to work fine, but after all the fiddling, it seems like I'm back to square one. Please see the "Correct" and "Incorrect" graph screenshots attached. I'm sorry to trouble you so much! I do appreciate your help though. history (9).csv

Thanks! I'll test and report back.

Thank you so much for your swift reply! Regarding the ina219 sensor - I could not find the one that you linked in stock, so I bought this one instead. According to this wiki, I matched the address with the DIP switch configuration. I added a "0" after the "2.7" Yesterday after your reply, and I think that was the problem. I'm still monitoring, but it looks positive, thank you! I'm busy draining the tank to recalibrate everything. I will keep you posted. Do you maybe know why my "Tank Volume" and "Current Full Percentage" aren't showing any data? Again, thank you so much!