so the resistor seems to be 120 ohms
when full mark it seems to be 33 ohms and empty down to the 240 ohms
Sounds perfect, so connect everything and measure the voltage that goes to analog pin. Voltage between Gnd and analog intput.
at empty the multi meter says between 0.13 - 0.09v it fluxates
at Full it says 0.03 - 0.04v it fluxates back and for there
but the esphome logger still shows the same fro full and empty
[17:53:30][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[17:53:30][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[17:53:30][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
[17:53:35][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[17:53:35][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[17:53:35][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
[17:53:40][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[17:53:40][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[17:53:40][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
you have some disconnection there in wiring, voltage should be between 1.1 and 2.6V. Put your multimeter in “continuity mode” and control your wiring from gnd
up to analog pin step by step
maybe i probed the voltage wrong? here is pics… as for continunity… i went from the ground and tested all wires i do get a reading as it doesnt beep just numbers to a 1 i miss my old meter that beeped
but here is how i read it earlier maybe i did it wrong for ya
0.03v is when the float is at the full point
0.12v is when the float is at the bottom point
do i need a mulitplier/? i read something for a nodemcu you do…
ill order the bigger esp32wrooms later maybe they work better too?
Your issue is probably disconnect wire… Anyway I kindly recommend to use those standard Wroom 32 boards!
If you don’t have “continuity” on yout meter you can follow the wiring just with resistance. Between gnd and sensor brown output it should be between 33 and 240.
Between brown output and 3.3V it should be 220. Between brown and analog input pin it should be zero.
if i pull the gpio 35 wire off then the logger reads a different ohm reading and then when i put it back goes back to the same number
[18:23:42][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[18:23:42][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[18:23:42][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
[18:23:47][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[18:23:47][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[18:23:47][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
[18:23:52][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.07500 V with 2 decimals of accuracy
[18:23:52][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 2.8Ω
[18:23:52][D][sensor:094]: 'Fuel Tank Sensor': Sending state 2.79070 Ω with 1 decimals of accuracy
[18:23:57][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.07500 V with 2 decimals of accuracy
[18:23:57][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 2.8Ω
[18:23:57][D][sensor:094]: 'Fuel Tank Sensor': Sending state 2.79070 Ω with 1 decimals of accuracy
[18:24:02][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[18:24:02][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[18:24:02][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
[18:24:07][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.03300 V with 2 decimals of accuracy
[18:24:07][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 54.7Ω
[18:24:07][D][sensor:094]: 'Fuel Tank Sensor': Sending state 54.68019 Ω with 1 decimals of accuracy
so i do get those ohms as you seen above photos…
as for volts i use the brown wire connection and the Resistor side of the 3.3v in the pic as it was the easiest… and i got 0.11volts and across the 2 posts i got 0.02 volts not 0 volts
but i guess ill order a standard sized esp32 on amazon now to make sure i get this working
Follow all the steps on post 27 above, otherwise it’s just a guesswork.
Esphome doesn’t have any role in this trial.
so i re do this its too complicated to send pics to hold camera etc… and i thought i did it right in the previous post and i dont have numbers so i dont know what a number 26 is…
so from Brown wire to ESP32 3.3v pin Ohms is 119.8 - 120 ohms this is for full or empty i dont get no 33 or 240 probably cuz of the 120ohm reisistor in the way
when i do the blue to brown wire directly thats when iu get the 33 and 240 ohm
when i do brown wire to gnd on ESP32 is some numbers then dead short
and Brown wire to Analog Input on ESP32 is 1.0 - 0.9 ohms
this is with it powered off not sure if you want it powered on same time
hope i did it right this time for you
ok until here.
This is not ok. From brown wire to esp32 analog pin is just a wire, resistance has to be zero.
You have flimsy connection on you breadboard or you made some erratic wiring not visible on the photos. Do you follow me?
i ordered a couple of these so hopefully in a few days or so maybe it will work better then the problems i having with this mini
https://www.amazon.ca/ESP-WROOM-32-NodeMCU-Development-Bluetooth-Microcontroller/dp/B0C9VSYS4N/ref=sr_1_5?crid=1I3XZICXBFO7D&dib=eyJ2IjoiMSJ9.mo9DhyQNaGfHqTBifi0RUwWZhjHAKFZKI1ZpOs3A9ecd_h7ujH4go7Juyd2c0H7A_Ze3zFH1i6VRov609lkU7cf3XJvCzmktd91IzVKgCOs32FfUQVrJkrG2tXrH9HMYeGdJBrzY50RJUH876EOQpMKgnFFSbUKG-5evDUZZW6j4IsDjqjVA7S0OJfZWdk3ZiG1F5lEa8-E3GNO9gxDHvU5Y-ogO7nG-pFGfjl9G0Jtf5DptumB48twYvj2GKyzvvma8N9xdgFjA-VbJqYkr78xB2SqQCkNxK8G4OCLHHGg.0kStJgIKJgTdEJAXwgYiieIRgNubI7gT10eZtE-jcwA&dib_tag=se&keywords=esp32%2Bwroom&qid=1723245739&sprefix=esp32%2Bw%2Caps%2C1140&sr=8-5&th=1
its just the wires you buy for bread boards… i stuck it in stuck resistor in and plugged into the esp32 thats it like u see in the pic nothing else
Good choice. But not related to your problem. Until you have 1.1-2.6V voltage between GND and analog wire, it’s not related to esp at all.
ill retest wiggle wires… and ill multimeter gnd to gpio 35 analog input and see what it says with the multimeter… other then soldering wires to a board only other thing i can think of but id wait till i got the new boards but ill re test your test
its frustrating and when you new to this its frustrating cuz u dont have the experts beside u looking over your shoulder lol
so with the multi meter on gnd and gpio 35 pin on the esp32 with the sending unit at full i get like .03volts
when i set it at empty
and do the same the mulit meter starts at 0.5v jumpts to 0.9v 1v drops down 0.5 0.4v drops down to 0.12v
Don’t complicate thigs, think simple…
It’s just a wire, if it’s not 0, it’s broken or not connected.
i get 0.9 ohms when i measure ohms testing it your way i dont get 0 i get 0.9 fluxates 1 ohm to 0.9 ohms