You have bad wire or connection.
i swapped wire and still got 1ohm to .0.9ohm then i decided to test some other wires not on the breadboard when i prob end to end i also get 1 ohm to 0.9 ohm they all bad wires then?
Maybe yes. Put your multimeter probes together to verify zero.
0.5ohms to 0.4ohms when i touch the probs together
you probably say get a new multimeter and get new esp32s lol
Yep. At this point. MM Probes together has to be zero.
Anyway, when you go forward, with 120ohm resistor, you have to have 1.1-2.6V voltage between gnd and analog wire. It’s no Esp related, just simple voltage divider. And you don’t need that “resistance component” in esphome, since your final interest is not resistance, but analog voltage.
Edit: check once again, maybe your multimeter was showing milliohms???
so i removed the resistance part… and on my meter i have it set to 200 if you look in the pics above… so i guessing thats up to 200 ohms
so i tried i seen there is a 2nd ground on the esp32… so i probed it and the gpio35 analgoue input… when at full i get 3.14-3.22 volts when i set it to empty i get 3.24 - 3.26volts
thats using the other side ground… does that mean anything now its more then 2.6 volts thats messed… maybe its not compatible these minis and i need those bigger boards least i ordered it…
I didn’t understand anything from last post.
I repeat, until you have 1.1-2.6V on analog against GND, it’s not Esp related. Which means you have bad wiring/soldering. Look at the wiring image I posted. Disconnect analog wire (green in my image) from ESP and measure voltage between Gnd and that green wire.
ya my mistake plus i have dislexia so what makes sense for me doesnt always
i was stating there is 2 grounds on a esp32
well the 2nd ground gives me 3 volts but i miss interppted it since its not a soldered ground so i cant put the ground wire to the 2nd ground on the esp32 so thats why i guess i got 3 volts just gpio to ground nothing in between
ya your ? mark prob still only 0.12` volts to 0.3 volts
ill tackle this tomorrow solder some wires to a circuit board since i not getting voltage… either its cuz its not soldered… or maybe the mini just not putting out enough power or its drawing more power? it says 5volts and u shouldnt use 5 volts why is that? is it possible damage… i was wondering maybe this thing needs more power then 3.3v? but ill solder some sold wires and the resistor tommorow
cuz i getting frustrated and i figured it was plug and play like the example on the resistance page and i was set to go… and frustrating for me cuz i do not practice electronics everyday
It is really plug and play. It’s not related to any internals of your ESP32 board until you confirm that voltage on post above. You sound tired and you multimeter might be crap. Anyway, time to sleep for me…
i appreciate the help so far… have a good sleep and ill get this working if it kills me (: if not i ordered some new esp so if this one is faulty least the new ones shouldnt be (:
@karosm so i got a new esp32… same issues… it looks like maybe 120 is not right it caps outs at… i re added the resistance sensor it was easier to read… i can not get past 57. ohms
this pic is 51.2 ohms
[18:18:42][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 51.2Ω
[18:18:42][D][sensor:094]: 'Fuel Tank Sensor': Sending state 51.20623 Ω with 1 decimals of accuracy
[18:18:47][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.99000 V with 2 decimals of accuracy
[18:18:47][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 51.4Ω
[18:18:47][D][sensor:094]: 'Fuel Tank Sensor': Sending state 51.42857 Ω with 1 decimals of accuracy
[18:18:52][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.98800 V with 2 decimals of accuracy
[18:18:52][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 51.3Ω
[18:18:52][D][sensor:094]: 'Fuel Tank Sensor': Sending state 51.28027 Ω with 1 decimals of accuracy
[18:18:57][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.99400 V with 2 decimals of accuracy
[18:18:57][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 51.7Ω
[18:18:57][D][sensor:094]: 'Fuel Tank Sensor': Sending state 51.72593 Ω with 1 decimals of accuracy
[18:19:02][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.99300 V with 2 decimals of accuracy
[18:19:02][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 51.7Ω
[18:19:02][D][sensor:094]: 'Fuel Tank Sensor': Sending state 51.65150 Ω with 1 decimals of accuracy
[18:19:07][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.99300 V with 2 decimals of accuracy
[18:19:07][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 51.7Ω
[18:19:07][D][sensor:094]: 'Fuel Tank Sensor': Sending state 51.65150 Ω with 1 decimals of accuracy
this is where its capped out at 56 ohms it cant read past 56 ohms
[18:22:42][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 56.1Ω
[18:22:42][D][sensor:094]: 'Fuel Tank Sensor': Sending state 56.07825 Ω with 1 decimals of accuracy
[18:22:47][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.05100 V with 2 decimals of accuracy
[18:22:47][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 56.1Ω
[18:22:47][D][sensor:094]: 'Fuel Tank Sensor': Sending state 56.07825 Ω with 1 decimals of accuracy
[18:22:52][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.05100 V with 2 decimals of accuracy
[18:22:52][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 56.1Ω
[18:22:52][D][sensor:094]: 'Fuel Tank Sensor': Sending state 56.07825 Ω with 1 decimals of accuracy
[18:22:57][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.05100 V with 2 decimals of accuracy
[18:22:57][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 56.1Ω
[18:22:57][D][sensor:094]: 'Fuel Tank Sensor': Sending state 56.07825 Ω with 1 decimals of accuracy
[18:23:02][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 1.05100 V with 2 decimals of accuracy
[18:23:02][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 56.1Ω
here its full at 34 ohms but really 33 ohms
[18:24:07][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 34.4Ω
[18:24:07][D][sensor:094]: 'Fuel Tank Sensor': Sending state 34.38597 Ω with 1 decimals of accuracy
[18:24:12][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.73800 V with 2 decimals of accuracy
[18:24:12][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 34.6Ω
[18:24:12][D][sensor:094]: 'Fuel Tank Sensor': Sending state 34.56674 Ω with 1 decimals of accuracy
[18:24:17][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.73400 V with 2 decimals of accuracy
[18:24:17][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 34.3Ω
[18:24:17][D][sensor:094]: 'Fuel Tank Sensor': Sending state 34.32580 Ω with 1 decimals of accuracy
[18:24:22][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.73600 V with 2 decimals of accuracy
[18:24:22][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 34.4Ω
[18:24:22][D][sensor:094]: 'Fuel Tank Sensor': Sending state 34.44618 Ω with 1 decimals of accuracy
[18:24:27][D][sensor:094]: 'Fuel_Tank_Sensor': Sending state 0.73200 V with 2 decimals of accuracy
[18:24:27][D][resistance:039]: 'Fuel Tank Sensor' - Resistance 34.2Ω
[18:24:27][D][sensor:094]: 'Fuel Tank Sensor': Sending state 34.20561 Ω with 1 decimals of accuracy
do i need a small resistor or a bigger resistor. maybe do i need 240 ohm resistor? as it hits the ceiling at 56 ohms and the rest of the rod reads 56 ohms in esphome
You should read what I’m writing. You are dealing with simple voltage divider.
Look at the image I posted #47. Wire it like that and measure the voltage of analog input wire(disconnected from ESP). What you get?
0.3v for full
1.05v for the around 56 ohm postion in pic
0.11v for when its empty postion
??? What are you doing?
thats what i did
and i put it back on the esp32 and it caps out at
1.05100 V after 5 inchs or so
wire input off and multimeter it says 1.12v for that 5 inch position
