arduino:arduino_without_a_bootloader
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| arduino:arduino_without_a_bootloader [2021/04/22 01:01] – [Case 3: Pro Mini 3.3V/8MHz with USBtinyISP] mithat | arduino:arduino_without_a_bootloader [2021/04/22 01:01] – [Case 3: Pro Mini 3.3V/8MHz with USBtinyISP] mithat | ||
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| <WRAP center round important 80%> | <WRAP center round important 80%> | ||
| - | **Make sure your USBtinyISP level shifts the I/O before attempting this approach.** | + | **Make sure your USBtinyISP level shifts the I/O before attempting this method.** |
| Version 1 of the Adafruit USBtinyISP has a jumper that disconnects the internal VCC from the programming headers, but it does //not// level-shift the I/O. All the thrid-party USBtinyISP clones I've encountered have the VCC jumper as well as the needed circuitry to level shift the I/O. But it's entirely likely that there are some that don't. | Version 1 of the Adafruit USBtinyISP has a jumper that disconnects the internal VCC from the programming headers, but it does //not// level-shift the I/O. All the thrid-party USBtinyISP clones I've encountered have the VCC jumper as well as the needed circuitry to level shift the I/O. But it's entirely likely that there are some that don't. | ||
arduino/arduino_without_a_bootloader.txt · Last modified: 2022/05/30 05:46 by mithat