"C:\Users\jhobbs\AppData\Local\Arduino15\packages\MiniCore\tools\avrdude\7.2-arduino.1/bin/avrdude" "-CC:\Users\jhobbs\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.1/avrdude.conf" -v -patmega328 -cusbtiny -B32 -e -Ulock:w:0xff:m -Uefuse:w:0b11111111:m -Uhfuse:w:0xd7:m -Ulfuse:w:0b11110…

[image] cheapjeep78: initialization failed, rc=-1 Perhaps this post can help I simply googled "initialization failed, rc=-1"

i have the 328p which is a tiny surface mount and its mounted on a board. i have wires soldered to it correctly to reset, mosi, sck...etc... it always says failed to erase and error: initialization failed. Tried another board but same result. on win10 64bit and it could be driver related but i am t…

[image] cheapjeep78: and its mounted on a board. Are there any other components connected to those MOSI, MISO, SCK and RST pins via the traces on that board? e.g. a SPI radio module device?

Do you have them connected like: If you follow the ISP Header 6-pin and connect the MISO to the MISO on the chip SCK to SCK on the chip? i.e. not like using the MISO for communications. I have been using a USBasp board for my ATTiny84 with great success. Do you have a bootloader you plan on loa…

yes i have it connected pin to pin as in:miso to miso sck to sck reset to reset mosi to mosi and 5v and gnd respectively. i am using the bootloader in the arduino ide for atmega 328p

i don't think so. it is on a flight controller but the radio module is removed. It is an old oversky mul a flight controller I got several cheap to learn with and i can't seem to update the 328p. i used dozer's tutorial and the only thing different is i am using a usbtinyisp instead of the usbasp th…

Programming atmega328 with usbtinyisp first time user

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JohnRob April 3, 2024, 3:53am 2

Perhaps this post can help

I simply googled "initialization failed, rc=-1"

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Programming atmega328 with usbtinyisp first time user

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