Doctorbass
100 GW
Note;
I suspect that it has been plugged (by the previous owner) to the wrong harness and the wrong voltage at input blown something on the pcb.
I decided to open it and as well to also show you what's inside as Alan Hu does not respond to anybody that need help so ... why not to reveal it once for all! :
I found a arduino MEGA2560 PRO board inside that is connected to a display NEXTION touch screen model : NX4024K032_011
Arduino: https://robotdyn.com/mega-2560-pro-embed-ch340g-atmega2560-16au.html
Display: https://nextion.ca/datasheets/nx4024k032_011/
On the Arduino, there are two voltage regulator that i suspect maybe one to be blown. one is 5.0V 800mA and the second one is 3.3V 800mA, both model AMS1117.
The 5V input of the NXT is showing 7.58ohms which at 5V is not normal as it's like 650mA of current draw
The 5V input of the HIGO connector is directly connected to the 5V output of the AMS1117-5.0V.
The 5v output of that regulator goes to the input of the AMS1117_3.3V regulator.
BUT! the 5V is showing 7.58 ohm so i suspect that the 3.3V regulator might be ok and the 5V regulator is just blown.
It seem that the Eggrider connector is not only different voltage but also have teh RX and TX reversed compared to the NXT
I got a BAC8000 and a NXT display( the "X" shape model) and it seem that the display is broken.
I will replace it and see if it can work.
Coming next: DIY harness NXT to BAC8000.
Doc
- I have no wirring harness for connections to the BAC8000
- This BAC8000 apparently is locked from ERT and it is not possible to reprogram it unless i get help from Alan?
- I did not attempt to connect it with wrong harness, ex: litespeedbike eggrider harness
- It overload the USB input of my computer when i connect the micro usb of the inside arduino board to my PC
I suspect that it has been plugged (by the previous owner) to the wrong harness and the wrong voltage at input blown something on the pcb.
I decided to open it and as well to also show you what's inside as Alan Hu does not respond to anybody that need help so ... why not to reveal it once for all! :
I found a arduino MEGA2560 PRO board inside that is connected to a display NEXTION touch screen model : NX4024K032_011
Arduino: https://robotdyn.com/mega-2560-pro-embed-ch340g-atmega2560-16au.html
Display: https://nextion.ca/datasheets/nx4024k032_011/
On the Arduino, there are two voltage regulator that i suspect maybe one to be blown. one is 5.0V 800mA and the second one is 3.3V 800mA, both model AMS1117.
The 5V input of the NXT is showing 7.58ohms which at 5V is not normal as it's like 650mA of current draw
The 5V input of the HIGO connector is directly connected to the 5V output of the AMS1117-5.0V.
The 5v output of that regulator goes to the input of the AMS1117_3.3V regulator.
BUT! the 5V is showing 7.58 ohm so i suspect that the 3.3V regulator might be ok and the 5V regulator is just blown.
It seem that the Eggrider connector is not only different voltage but also have teh RX and TX reversed compared to the NXT
I got a BAC8000 and a NXT display( the "X" shape model) and it seem that the display is broken.
I will replace it and see if it can work.
Coming next: DIY harness NXT to BAC8000.
Doc