This is in a 1圆 straight header format, so it will mate nicely with your 6-pin Jumper wire. SPI Interface (1圆 header) - These headers provide optional direct access to the SPI lines. Isolation Switch IC - The multiplexer IC that disconnects the SPI lines from your Pi to the Target. Closing more than one jumper will damage your Raspi. Please only close one of these jumpers at a time. Also note that the 3.3V and 5V options are provided from those voltages on the Raspi 2x20 headers. 'TARGET' is the default setting for this jumper. Note: The 'TARGET' option means that the target IC will provide the logic level reference voltage.

Speed Test - We take the HAT for a speed test and see just how fast it goes!.

A nice one-click solution for programming your Arduino with the speed of ISP.

ISP Programming: Within the Arduino IDE - How to use the HAT from within the Arduino IDE.

ISP Programming: Command Line - A more advanced, command-line-based approach to using the Pi AVR Programmer HAT.

ISP Programming: Stand-Alone - How to use the HAT in stand-alone mode and program an arduino bootloader (or any hex file) via SPI onto an ATMega328p target IC (the Redboard).Hardware Hookup - How to hookup the Pi AVR Programmer from your Raspi to the example Target AVR.Closer Look at the Repository Files - Here you'll find a more detailed description of each file necessary to setup your Pi.Here, we will show what settings to change and what files need to be modified and/or copied. Raspberry Pi Setup - To get up and programming, there is a little bit of setup work to do on your Raspberry Pi.Board Overview - A look at the hardware components that make up the Pi AVR Programmer HAT.It's split into a series of sections, which cover: In this tutorial we will introduce you to all of the important aspects of the Pi AVR Programmer HAT. ISP allows you to poke at the fuse bits to change many settings, including the brown-out voltage.With ISP, you can overwrite the bootloader and squeeze out some extra flash space.This means you can leave RX and TX connected during development and re-program your AVR with new code without un-plugging and re-plugging any of your programming lines. Instead, it uses MOSI/MISO/SCK/RESET - Arduino pins D11/D12/D13/RESET. ISP programming does not require using these pins. If your project requires that your hardware UART pins (RX/TX) be connected to another device, this can conflict with serial uploading of code.ISP provides a faster and more reliable code upload.If your AVR doesn't have a bootloader on it, it's probably the only way to load code.There are many reasons for programming your AVR via an in-system programmer (ISP): SparkFun Pi AVR Programmer Github Repository

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