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layout: post title: webpage install try

1. making raspberry pi connecting with arduino using gpio without ftdi

I have been thinking about this a lot and finally got solution:

{% highlight bash %} npm install -g phant {% endhighlight %}

more information oscar Liang was using 1.6k and 3.3k as voltage divider. while Deanmao was using 10k and 15k. the latter was found ok to receive data but not upload script. the former works perfectly

1 micro F is found enough to emulate dtx pins, i used a electrolytic capacitor, and found it works on any directions (positive could either be at reset or digital) it is also needed to change the avidude file by incorporating autoreset. the reference has a few ones that are usagable arduino ide comes with avrdude, it is needed to change the avrdude inside arduino ide also it is found that if tx and rx pins on the Arduino surface is connected to rpi, it overrides ftdr, meaning ftdr will not receiee any data.

TO210219 with CZ and LT

It was found that after an upgrade by sudo apt upgrade the avrdude is been replace to the original file, so that rpi can not upload the firmware to arduino. the way of solving it is to run the following commands as supersuer:

mv /usr/bin/avrdude /usr/bin/avrdude-original
ln -s /usr/bin/avrdude-autoreset /usr/bin/avrdude

reference:

http://redhunter.com/blog/2015/01/09/raspberry-pi-arduino-ide-via-gpio/

https://github.com/deanmao/avrdude-rpi

http://www.deanmao.com/2012/08/12/fixing-the-dtr-pin/

https://oscarliang.com/raspberry-pi-and-arduino-connected-serial-gpio/