My boost voltage is only reading 12v.
Was I also supposed to do -U eeprom:w:iveep.hex?
Was I supposed to change any fuse bits?
avrdude [...] -u -U lfuse:w:0xE2:m -u -U hfuse:w:0xC6:m -u -U efuse:w:0x01:m
jarchie wrote:Adafruit support won't answer this question because this isn't an Adafruit kit.
Ouch, that's harsh. I appreciate your response.
% make -n full
avrdude -p atmega328p -P /dev/ttyACM0 -c usbtiny -u -U lfuse:w:0xE2:m -u -U hfuse:w:0xc6:m
avrdude -p atmega328p -P /dev/ttyACM0 -c usbtiny -B 5 -U flash:w:iv.hex
avrdude -p atmega328p -P /dev/ttyACM0 -c usbtiny -B 5 -U eeprom:w:iveep.hex
Ouch, that's harsh
Sorry. I figured if I "yelled" at you, others wouldn't.
You are welcome to discuss your clock projects here.
I've managed to set the fuse bits and flashed (and reflashed) the flash and eeprom memory.
I still get my post beep, but still only getting 12v out of the boost circuit.
I'll post my success (or failure) in case it might help others down the road.
jarchie wrote:On my clock, I set the brightness to 1 (the default brightness for the Adafruit firmware), and the boost voltage was 13.3v without the display attached. A reading of 12 volts is probably okay. I would swear that the voltage was higher when I first assembled the kit, but I trust my multimeter more than my memory. My apologies for leading you astray.
@7805 - 12.4v in, 4.9v out
@Q2/L1 Junction (bridged pins of Q2) - 12.4v
@D3 - 12.4v
@IC1-12(Boost) - 0.00v It appears the boost pin is staying low which would simply pass my 12.4v across L1 to C5/C6 and out to +UB... unboosted.
On powerup, success! Kind of...
board vias and top-trace connections were difficult under the PLCC socket. I'm seeing if I can do some corrective surgery on it, if not I'll be removong, fixing, and replacing the PLCC socket.
In the guide, it suggestes that when testing boost output, the reading should not be below 40v. This is misleading, mine was 12.4.
As said before, thanks for all the help with this. I'll update again as I make progress, and hopefully eventually a fully functional photo.
Users browsing this forum: No registered users and 4 guests