Unstable Potantiometer

Projects Programming
1

For my project I disassemble my drone's remote controller. I add arduino and other stuffs in it. But I have very interesting problem. Let me show this problem with pictures.

When my pot 0 degree (example) it shows 23
When my pot 50 degree (example) it shows 70
When my pot 100 degree (example) it shows 250

trying to say : before 50(example) degree its 10value per degree
after 50 degree its 40 value per degree

numbers are for examples

help me please I didn't understand what am I doing wrong

The real values are :

in middle : 60
down : 43
up : 243

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2

Show your circuit. Have you connected the pot to 0 V, 5 V and an analog input? Could it be that your pot is not linear?

3

My circuit is basicly that

Pot 1 ------- 5v
------- GND
------- Analog 0

Pot 2 ------- 5v
------- GND
------- Analog 1

Pot 3 ------- 5v
------- GND
------- Analog 2

nRF24L01 --- its regulator ---- 5v
--- And other cables
--- And other cables
--- And other cables

LCD (16,2) -------- 5V
-------- GND
-------- SDA
-------- SCL

I dont know what is Linear Potantiometer. It is in a drone remote controller

4

Is the potentiometer a linear or a logarithmic type ?
If it is an audio pot (say a designed as a volume control) the chances are that it is logarithmic.
For most Arduino applications, a linear type is appropriate.

5

The values you showed earlier change like in a logarithmic potentiometer.

6

You connected the pots incorrectly. Disconnect them right now, they could be shorting out your power supply, burning the carbon traces.

The left pin should go to ground, the center pin (wiper) to the analog pin, end the right pin to Vcc.

7

No no. Cable colors are Red - Black - White. I connect it like 5V - GND - Analog Pin. is it wrong?. And if it wrong how can it works (working wrong but it works :D)

8

You can't always trust color coding, but in this case, it's probably correct.
If so, then you're probably dealing with a logarithmic potentiometer, as others have suggested. They consist of two linear traces with a different resistance to approximate a logarithmic taper: