![]() ![]() ![]() STK600 Latest development board for all AVRs, with plugins for all devices.STK500 Development board for all AVRs, including Xmega and AVR32, now discontinued.STK200 Designed for basic training on AVR microcontroller programming.All have their uses but the basic difference is summarised here: If you are a novice with AVR microcontrollers, you have a few basic choices if we exclude lots of Chinese clones – STK200 from Kanda, STK500 or STK600 from Atmel and Arduino. Arduino has also entered the market but this serves a different purpose and won’t actually teach you much about microcontrollers. It was originally designed for Atmel and was the first low cost microcontroller training kit on the market and helped launch the AVR as a popular microcontroller.Ītmel have since moved on to STK500 and STK600 as the AVR portfolio has expanded but the original kit has many advantages, especially for beginners. Soldering in another AVR would be quicker, however.Kanda have been making the STK200 starter kit for 15 years and it is still proving to be very popular. This should work regardless of the fuse settings. Note that this uses high voltage (12 V) signals, so be sure to remove things like voltage regulators. This will require you to remove most components from this PCB and connect about two dozen wires between the Dragon and this board. Wire the AVR up for high-voltage parallel programming. This should recover from most incorrect fuse settings. Try removing the crystal and feed a 1 MHz clock to XTAL1 (the Dragon may have an output, or generate it with another AVR with CLKOUT or a function generator). Test for shorts between any of the pins you connect (e.g. The new version was much better, but it is still not the most robust tool without any case. The old version (pre-2009 or so) without mounting holes was quite fragile and used to kill its DC-DC converter if you looked at it funny. Just to be sure, you did not succeed one time in programming and somehow changed the fuses? Is the ATmega328p blank or was it loaded with an Arduino bootloader or something else that might have changed its fuse settings? The other things I can think off is apart from verifying all connections are: - Test ISP from the Dragon to some other, known-working, target. I assume ground and +5V are also connected to the header (shown on the schematic, but for troubleshooting you sometimes have to ask the stupid questions)? With default fuse settings the crystal should not matter, since it is using the internal 8 MHz RC oscillator with /8 divider. ![]()
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