For this week I´ve been trying to make the hello.video board without much succes. I assembled two boards: In both I could program the ATtiny, this was the outcome in the terminal:
C:\Users\Japi\Documents\My Box Files\___MASTER___\__fabAcademy__\Week_13_Output
devices\hello video>make -f hello.video.44.make program-usbtiny
avr-gcc -mmcu=attiny44 -Wall -Os -DF_CPU=20000000 -I./ -o hello.video.44.out hel
lo.video.44.c
avr-objcopy -O ihex hello.video.44.out hello.video.44.c.hex;\
avr-size --mcu=attiny44 --format=avr hello.video.44.out
AVR Memory Usage
----------------
Device: attiny44
Program: 374 bytes (9.1% Full)
(.text + .data + .bootloader)
Data: 126 bytes (49.2% Full)
(.data + .bss + .noinit)
avrdude -p t44 -P usb -c usbtiny -U flash:w:hello.video.44.c.hex
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.02s
avrdude: Device signature = 0x1e9207
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "hello.video.44.c.hex"
avrdude: input file hello.video.44.c.hex auto detected as Intel Hex
avrdude: writing flash (374 bytes):
Writing | ################################################## | 100% 0.38s
avrdude: 374 bytes of flash written
avrdude: verifying flash memory against hello.video.44.c.hex:
avrdude: load data flash data from input file hello.video.44.c.hex:
avrdude: input file hello.video.44.c.hex auto detected as Intel Hex
avrdude: input file hello.video.44.c.hex contains 374 bytes
avrdude: reading on-chip flash data:
Reading | ################################################## | 100% 0.22s
avrdude: verifying ...
avrdude: 374 bytes of flash verified
avrdude: safemode: Fuses OK
avrdude done. Thank you.
C:\Users\Japi\Documents\My Box Files\___MASTER___\__fabAcademy__\Week_13_Output
devices\hello video>
but when I plugged in into an LCD monitor it didn´t work, I just couldn´t get any image, just a no input signal. I built the second one because I realized the ATtiny got too hot when connected either to the FABisp or to the battery. With the second one I was extremely careful soldering the ATtiny and all the components, and still didn´t work:
This time the ATtiny temperature was fine but, again I couldn´t get any image. I checked the board with the multimeter, continuity and voltage. Between signal and ground of the jumper 3 (video output) I got the next:
1.- 2,53 V measured as continuous 2.- Oscillating numbers between 0,6 and 0,9 measured as alternating current.
I don´t know how to go on with this board...