"Like Vernon said many of the Usb-ISP interfaces will not address mega 2560 256k and write bootloader or arducopter above 128k
To test try loading something like the Blink program to low memory and see if it…"
Sean Hayden's Discussions
Bricked my APM 2.5? Help please!
Started this discussion. Last reply by John Mulligan Sep 13, 2012. 20 Replies 0 Likes
Hi all, sorry this is my first post and please excuse any mistakes I make in this post.Last night I was setting up my hexadrone based on the 3DR hexa, with APM 2.5 and there was an audible pop from…Continue
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Vernon Barry replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"What programmer? My usbtiny from adafruit does this on Mega(s) 1280s or 2560s
I bought a real AVRmk2 just because of that error, but as other say, it may have flashed it, that's an error in reading back, not flashing technically."
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"So after seeing which chip blew up on the board, I think I know what went wrong. I think I plugged in a camera gimbal servo to the ISP header. Mea culpa."
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Hi Steven, yeah I thought so. After flashing through the ISP interface failed I busted out my trusty scope and started looking at the board. I can't find the chip I smoked in the Eagle schematics, it's not in the same place or…"
Steven G replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Yes, u have released magic smoke. Unfortunately, I think I read somewhere that 3DR does not do repairs. $$$ or digikey a shopping we will go. Btw, I can't find a BOM for the APM 2 or 2.5. Does anyone know of one. I got a APM 2.5 missing a pull…"
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Sorry for the cam quality, it's an old AO Spencer scope with a cheesy USB sensor."
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"I think I smoked something else on the board:
Also, his neighbor to the south has a weird dot on him:
"
Drone Savant replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"I've seen this before and sometimes it can be brushed off... was this after it went most of the way through the flash? Check it with Mission Planner, it may work fine at this point anyway. "
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Something appears to be off:
avrdude: verification error, first mismatch at byte 0x1e000 0xff != 0x0davrdude: verification error; content mismatch
Any thoughts?"
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Thanks for the info Vernon, I'll go ahead and flash and report back."
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Thanks for the code Drone, I appreciate the help."
Vernon Barry replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Yes, that's correct. I would use Arduino for sanity. The correct port is next to the USB for the 2560. Using the Arduino IDE, if you tried the one for the 32u2, it would fail and not flash the chip by accident.
"
Sean Hayden replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Thanks guys, just for a sanity check, can you confirm the location of the ISP pins on the board? I see 6 empty through holes forward on the board on the starboard side near the two GPS headers that look suspiciously like where an ISP header…"
Vernon Barry replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"Also, let's go over some gotcha's based on the scenario. The OSD chips are know to run hot. This could have been the cause of the failure. That MAX OSD chip connects to output pins on the 328P and then the same 328P connects to the UART0…"
Vernon Barry replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"If the thing shows up when he plugs it into windows, obviously the PPM/USB to serial is working. Thus any ISP AVR programmer can flash a standard 2560 bootloader on the main chip.
I would definitely leave the PPM alone since we know it's…"
Drone Savant replied to Sean Hayden's discussion Bricked my APM 2.5? Help please!"I've attached the Atmega 2560 bootloader for the APM2.0 and the default code for the 32U2 chip as well. I would guess that it is the same at the 2.5. Flashing the bootloader may very well help you out, however I can obviously make no promises.…"
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