Megadrum by Japi - Documentation / Pictures -

[Synthex]

Is the brightness of the backlight is too low or there is no backlight ?

You can "put" or solder a 33 ohm resistor on top of the other, in parallel.

[japi]

There's no backlit at all
I will try the 33 resistor hack and post it results here

[japi]

The hack worked!!! I have backlit again!!!!!!!!!!!!!!!!!!!!!!!!
Thanks all for your support !!!!!!!!!!!!

DSC00016.JPG

[Synthex]

Great !!!

[gyro]

Is the brightness of the backlight is too low or there is no backlight ?

You can "put" or solder a 33 ohm resistor on top of the other, in parallel.

Sorry, but Synthex seems to be the fastest ...

[japi]

Dmitri first won the contest with this statement

Replace the 470 Ohm resistor coming from the pin 15 of the lcd connector with a ~33-68 Ohm resistor.

[japi]

I plan to apply the bootloader to the atmega so upcoming firmwares can be uploaded easily via usb. Questions:

1) Does the ICSP cable is the same for dmitris and synthex 2.5 boards? same pinout? I previously flashed my atmega with dmitris board but now I have a 2.5, so I need to know if I can use the same cable

2) My atmega already has a firmware. Is this a problem to the bootloader? Or the bootloader is flashed in a distinct area of the chip? Can I upload the bootloader directly and be done? Or I will have to upload the main firmware again ?

Thanks

[gastric]

Japi, all your hard work and new grey hairs have really paid off. Nice work! Hopefully after the holidays I'll finish mine up with the same success.

[dmitri]

I plan to apply the bootloader to the atmega so upcoming firmwares can be uploaded easily via usb. Questions:

1) Does the ICSP cable is the same for dmitris and synthex 2.5 boards? same pinout? I previously flashed my atmega with dmitris board but now I have a 2.5, so I need to know if I can use the same cable

Should be the same

2) My atmega already has a firmware. Is this a problem to the bootloader? Or the bootloader is flashed in a distinct area of the chip? Can I upload the bootloader directly and be done? Or I will have to upload the main firmware again ?

Writing the bootloader will erase everything in Atmega so you'll have to upload the MegaDrum firmware again. But it is not a problem, is it?:)

[japi]

Thanks!
Without the help from all of you from this forum I couldn't have done it. Thank you all

Hope you can sort out the problems with your board