Upgrading from 4.0 to 4.2


 
J

Jon Zoss

New member
So.. I have to do a bit more testing, but my 4.0 board decided to die in the middle of a cook. Good times I know, works over usb, but not with the AC plug.. Now if I can't track it down.. I sorta want to build a 4.2 build anyway.. So.. I was wondering what parts make sense to take from the 4.0 board. I don't care enough to pull the all the capacitors and stuff, but I was think of pulling off the parts that make sense.. Just wondering if you guys have any suggestions , so far I came up with

1. Raspberry Pi :)
2. Fan, servo
3. LCD
4. Maybe the Socket, and 4 jacks?
5. Micro-controller

Anything else worth pulling off? Any of these so I just buy new?

Thanks
 
For my 4.0 to 4.2, I am just reusing the Raspberry Pi, LCD, and ATMega .. ordered everything else fresh. Especially since the ATMega was backordered (from the one place I checked).

The rest is not worth pulling off considering the cost.
 
I usually move the LCD, ATmega, and 5V power module. Also the button if I haven't soldered it down, but that's not a big deal. 1/3rd of the cost is the LCD, the rest isn't much.
 
I'm lazy, really lazy, and I also hate desoldering. I ended up not reusing my LCD from the 4.0 and picked up a new one, to avoid cursing at trying to de-solder the old LCD.

Other than that, reused my ATMega and RPi - disconnected the RPi from the 4.0, mated up to 4.2, and voila. Everything came up as normal


Haven't soldered SMD in forever.. looks like crap to me, but, everything meters as it should. I'm going servo this time so just sitting back til case and damper arrive then it is party time...
 
I bought one of those solder suckers and I love it for removing solder from things like power connectors, and probe Jacks.

But, every LCD I have tried to remove has been ruined, lol. So, I don't think it's not being lazy those things that have multiple solder points are a pain and it's less of a hassle to just get a new one.

I have learned a new trick although I have not had to use it yet and that's to get a thin wire and put it along the solder joints on the LCD. Then you solder the wire to all the pins and then you take your soldering iron and heat the wire until all the pins are hot enough for the solder to melt and the LCD should be able to be removed.
 
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