Firmware GensAce Imars II

[gyanyeugen]

Hello. I have an GensAce Imars II charger and suddenly started showing on LCD only black squares. I tried to reflash with different firmware but only I have achieved was continuous beep or with another firmware intermitent beep. I also tried to rewrite the original firmware, but nothing has changed. Photos with my charger are located at http://www.rcgroups.com/forums/showthread.php?t=1951734&page=22 Is there any solution to fix it?

Best wishes!

[stawel]

please see: https://github.com/stawel/cheali-charger#troubleshooting "reset atmega32 fuses using avrdude:" also check the pin layout - which pins are connected to the LCD: see: https://github.com/stawel/cheali-charger/blob/master/src/hardware/atmega32/generic/50W/imaxB6-pins.h#L45-L50

[gyanyeugen]

Hello Pawel.Thanks very much. I do not know if it helps, but I looked at PCB, took some mesurements and I drew the pinout in the picture attachment file.Pins 23 and 24 are conected at 2 smd transistors under the LCD (I must desolder LCD to take masurements and a photo)

 On Sunday, May 24, 2015 3:57 PM, Paweł Stawicki <notifications@github.com> wrote:

please see: https://github.com/stawel/cheali-charger#troubleshooting "reset atmega32 fuses using avrdude:" also check the pin layout - which pins are connected to the LCD: see: https://github.com/stawel/cheali-charger/blob/master/src/hardware/atmega32/generic/50W/imaxB6-pins.h#L45-L50— Reply to this email directly or view it on GitHub.

[gyanyeugen]

Thank you Pawel, My mistake, I've replied from yahoo where I put an attachment file. The photo with pinout is located at http://www.rcgroups.com/forums/showthread.php?t=1951734&page=22#post31698837 and in the below picture.

It seems to be another hardware architechture. The pinouts are: Atmega 32A LCD Pin 40 Pin7 Pin 41 Pin8 Pin42 Pin9 Pin43 Pin10

[stawel]

It seems to be another hardware architechture.

Yes, you are right, if you what you can try to add support to your charger into cheali-charger, but you should be aware that this will take time. Unfortunately I'm also a little busy right now so you will be mostly on your own.

if you are interested then you should also check other LCD connections, see: http://www.engineersgarage.com/electronic-components/16x2-lcd-module-datasheet

It seems to me that your charger uses LCD pins: Register Select Read/write Enable DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7

[stawel]

Hi @gyanyeugen, How is your reverse engineering going? Do You need any help?

[gyanyeugen]

Hello Pawel. I didn't do  anything more to the charger. I wrote to GensAce to send me the firmware, but no response from them.I finished my 4 axis CNC hot wire and I was busy.As you said before, it takes a lot of time programming and I am not too good at that.Thanks a lot, keeping touch. Sincerely, Eugen

 On Friday, July 3, 2015 10:28 PM, Paweł Stawicki <notifications@github.com> wrote:

Hi @gyanyeugen, How is your reverse engineering going? Do You need any help?— Reply to this email directly or view it on GitHub.

[stawel]

As you said before, it takes a lot of time programming and I am not too good at that.Thanks a lot, keeping touch.

If you have free time and want to, we could try to add your charger to the project together, I will do the programming part and you will do the testing, what do you think?

[gyanyeugen]

It's ok Pawel.Tomorow I'll go on holiday, and I'll be back after 12 days. After that we could try work on this project. Best wishesEugen

 On Saturday, July 11, 2015 5:27 PM, Paweł Stawicki <notifications@github.com> wrote:

As you said before, it takes a lot of time programming and I am not too good at that.Thanks a lot, keeping touch. If you have free time and want to, we could try to add your charger to the project together, I will do the programming part and you will do the testing, what do you think?— Reply to this email directly or view it on GitHub.