15/4/2015 // Input Devices //

Making

My first experience making an input device was in week 7 when I made a water sensor; I made a sensor with two inputs and one output and I programmed it using Arduino.

I decided I wanted to make a "standard" board this time because the water sensor I programmed with Arduino and I wanted to use Python so for the first step I made the basic boards and played with them. In order to make the boards I used the fab academy tutorial as well as a tutorial from a 2014 student Michael Hurtado.

Temp sensor:



Sound sensor:

Programming

To program the sensors I used the following comands:

Make:
sudo make -f hello.temp.45.make program-avrisp2

Hex:
avrdude -p t45 -c avrisp2 -U flash:w:hello.temp.45.c.hex

This is how it looks like in Terminal:

Last login: Sat Jun 13 21:30:26 on ttys000 Katies-MacBook-Pro:~ katielevine$ cd desktop Katies-MacBook-Pro:desktop katielevine$ cd temp Katies-MacBook-Pro:temp katielevine$ sudo make -f hello.temp.45.make program-avrisp2 Password: avr-objcopy -O ihex hello.temp.45.out hello.temp.45.c.hex;\ avr-size --mcu=attiny45 --format=avr hello.temp.45.out AVR Memory Usage ---------------- Device: attiny45 Program: 504 bytes (12.3% Full) (.text + .data + .bootloader) Data: 1 bytes (0.4% Full) (.data + .bss + .noinit) avrdude -p t45 -P usb -c avrisp2 -U flash:w:hello.temp.45.c.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9206 avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed To disable this feature, specify the -D option. avrdude: erasing chip avrdude: reading input file "hello.temp.45.c.hex" avrdude: input file hello.temp.45.c.hex auto detected as Intel Hex avrdude: writing flash (504 bytes): Writing | ################################################## | 100% 0.17s avrdude: 504 bytes of flash written avrdude: verifying flash memory against hello.temp.45.c.hex: avrdude: load data flash data from input file hello.temp.45.c.hex: avrdude: input file hello.temp.45.c.hex auto detected as Intel Hex avrdude: input file hello.temp.45.c.hex contains 504 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 0.16s avrdude: verifying ... avrdude: 504 bytes of flash verified avrdude: safemode: Fuses OK (H:FF, E:DF, L:62) avrdude done. Thank you. Katies-MacBook-Pro:temp katielevine$ avrdude -p t45 -c avrisp2 -U flash:w:hello.temp.45.c.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9206 avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed To disable this feature, specify the -D option. avrdude: erasing chip avrdude: reading input file "hello.temp.45.c.hex" avrdude: input file hello.temp.45.c.hex auto detected as Intel Hex avrdude: writing flash (504 bytes): Writing | ################################################## | 100% 0.17s avrdude: 504 bytes of flash written avrdude: verifying flash memory against hello.temp.45.c.hex: avrdude: load data flash data from input file hello.temp.45.c.hex: avrdude: input file hello.temp.45.c.hex auto detected as Intel Hex avrdude: input file hello.temp.45.c.hex contains 504 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 0.16s avrdude: verifying ... avrdude: 504 bytes of flash verified avrdude: safemode: Fuses OK (H:FF, E:DF, L:62) avrdude done. Thank you. Katies-MacBook-Pro:temp katielevine$ Katies-MacBook-Pro:temp katielevine$ ls /dev/tty.usb* /dev/tty.usbserial-FTGG468I Katies-MacBook-Pro:temp katielevine$ python hello.temp.45.py /dev/tty.usbserial- FTGG468I command line: hello.temp.45.py serial_port

Testing

For testing with python I first needed to find my usb serial port so I used the command:

ls /dev/tty.usb*

Once I found my serial port I ran python using this command:

python hello.temp.45.py /dev/tty.usbserial- *serial port number*



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