Hi Guys,
I have a Pololu ACS715 (0 to 30A) Pololu - ACS715 Current Sensor Carrier 0 to 30A current sensor, connected to a 'standard' RC ESC (Electronic Speed Control). Problem is the car runs fine on it's own, the minute I connect the current sensor it refuses to move. I am not sure if this is a connection problem (as in a wiring problem) , incompatible ESC or if this is me being a fool. Any ideas or suggestions ?
Done some Google searches but seems most (if not all) gives code and examples on how to read the sensor, or connect to some thingy or another, none seem to have a rebellious ESC like I do.
This is all done and controlled with the transmitter at this stage, the vehicle is not yet controlled by the Arduino. The purpose of the Arduino at this point is just to read the sensor values (that part is working fine it seems). Ultimately I would like to move towards an autonomous RC, but for now I just want to test/see how the bits-n-bops will all work.
So my hardware setup is as follows:
Arduino Uno R3
RC Receiver: HiTec HP-ZRNB
ESC: HiTec EZX-R
Battery: Orion 7.2V 1800mA/h Ni-MH
DC Brushed motor: Tamiya Super Stock 53696-3300
Current Sensor: ACS715, 0A to 30A
(I have also attached a quick hand drawn image - no Picasso so please excuse the quality).
The ESC seems to supply a nice steady 5V (it is/has a BEC - Battery Eliminator Circuit).
Basic wiring (as I have done it and understood it):
ESC connects to RX (Receiver) via Y-Servo Cable. One end of the Y-Cable is connected to the RX, the other is connected to the Arduino (pins Vin for 5V, and GND for , well ground, both from the ESC), signal pin is not connected to the Arduino - I am not interested in the ESC signal just yet. The sensor (ACS715) is powered from the same 5V supply (and ground) as the Arduino and the feedback pin from the ACS715 connected to the A0 pin on the Arduino. The positive terminal of the ESC connects to the 'current-in' pin on the sensor and the 'current-out' pin connects to the positive terminal on the DC motor.
And when I hit the throttle it should go, right ?
That's it, thanks.
