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--- arduino:arduino_without_a_bootloader [2021/04/22 00:40] – [Cursed is the bootloader] mithat
+++ arduino:arduino_without_a_bootloader [2021/04/22 00:50] – [Hardware] mithat
@@ Line 27: / Line 27: @@
 That's a lot of options!
-Below, I cover a few cases to get you started. Most of these use the USBtinyISP.((As near as I can tell, the original source of the USBtinyISP design is Dick Streefland's [[https://dicks.home.xs4all.nl/avr/usbtiny/|USBtiny]]. Additional development and refinement leading to the [[https://learn.adafruit.com/usbtinyisp|USBtinyISP]] was done by Limor Fried. The software and hardware are open source (GPL and CC BY-SA 2.5), leading to many clones and derivatives.)) Owing to its low cost and wide availability, the USBtinyISP is one of the most popular options. The [[https://learn.adafruit.com/usbtinyisp|original USBtinyISP]] is available sporadically through Adafruit, and clones derived from its open source design along the lines of [[https://www.ebay.com/itm/USBTiny-USBtinyISP-AVR-ISP-programmer-for-Arduino-bootloader-Meag2560-uno-r3/382580265905|this one]] are widely available at auction sites, Amazon, Banggood, etc. All my testing was done using USBtinyISP clones from two different suppliers.
+==== USBtinyISP ====
-The original USBtinyISP has a built-in 3x2 IDC cable that carries the signals needed for ISP (in-system programming). It also has a 5x2 IDC cable that carries the same signals but in a different layout.
+Below, I cover a few cases to get you started. Most of these use the USBtinyISP.((As near as I can tell, the original source of the USBtinyISP design is Dick Streefland's [[https://dicks.home.xs4all.nl/avr/usbtiny/|USBtiny]]. Additional development and refinement leading to the [[https://learn.adafruit.com/usbtinyisp|USBtinyISP]] was done by Limor Fried. The software and hardware are open source (GPL and CC BY-SA 2.5), leading to many clones and derivatives.)) Owing to its low cost and wide availability, the USBtinyISP is one of the most popular options. The [[https://learn.adafruit.com/usbtinyisp|original USBtinyISP]] is available sporadically through Adafruit, and clones derived from its open source design along the lines of [[https://www.ebay.com/itm/400368767664|this one]] are widely available at auction sites, Amazon, Banggood, etc. All my testing was done using USBtinyISP clones from two different suppliers.
-If you are using a USBtinyISP clone, there's a good chance it has a keyed 3x2 ISP header in addition to a keyed 5x2 ISP header. The following assumes this is the case and that you have a 3x2 keyed IDC cable. Such a cable is often included with USBtinyISP clone purchases. Finally, I'm assuming it works at 5VDC, which is the defacto standard.
+The original USBtinyISP has a built-in 3x2 IDC cable that carries the signals needed for ISP (in-system programming) and a 5x2 IDC cable that carries the same signals but in a different layout. If you're using a USBtinyISP clone, there's a good chance it has a keyed 3x2 and 5x2 headers instead of build-in cables. The following assumes this is the case and that you are using a 3x2 keyed IDC cable. Such a cable is often included with USBtinyISP clone purchases. Finally, I'm assuming the USBtinyISP works at 5VDC, which is the defacto standard.
-Depending on the board you are programming, you may need to use Dupont wires (M to F or F to F depending on your USBtinyISP) instead of the IDC cable.
+Depending on the board you are programming, you may find it easier to use Dupont wires (M to F or F to F) instead of the IDC cable.
 <WRAP center round tip 80%>