measure something: add a sensor to a microcontroller board that you have designed & read it
The main phenomena I am aiming to sense is specific locations of rain droplets. I was debating for a while whether I should go with a piezo or a mic. I tried some initial experiments with a piezo disk - connecting it with an oscillascope to see what voltage would be generated when a small water droplet comes in contact with the disk. On the piezo side, I put some fuzzy velcrow to enable it to be a bit more sensitive as each of the little hairs deform a bit to interact with the piezo ceramic material.![](proj_public/10/drops_trimed_SM.gif)
![](proj_public/10/signal_trimed_SM.gif)
![](proj_public/10/mic2.jpg)
![](proj_public/10/mic3.jpg)
![](proj_public/10/micArray_single_img.png)
![](proj_public/10/input_viirj_TRACES_hiRes.png)
![](proj_public/10/input_viirj_INTERIOR_hiRes.png)
![](proj_public/10/input_viirj_DRILL_hiRes2.png)
![](proj_public/10/micArray_single_scheeema.png)
![](proj_public/10/mill.jpg)
![](proj_public/10/1.jpg)
![](proj_public/10/boardCloseUp.jpg)
![](proj_public/10/mic1.jpg)
![](proj_public/10/mic4.jpg)
![](proj_public/10/programmingIT.jpg)
![](proj_public/10/oneProblemFOund_mic Makefile is aatiny45, im using 44.png)
![](proj_public/10/micProblem.png)
make -f hello.SPU0414HR5H.make
avrdude -c avrispmkii -p t45 -U flash:w:hello.SPU0414HR5H.c.hex
avrdude -c avrispmkii -p t45 -U lfuse:w:0x62:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
After it was programmed without error, I navigated to my python file in terminal and opened a serial port by typing in: (although at times my computer wouldn't recognize the FTDI cable unless I restart my computer...so I looked into the forums and apparently if you've upgraded to El Capitan OSX on your mac, this has been a reported issue)
python hello.SPU0414HR5H.py /dev/cu.usbserial-FTF4BJVR
Tools:
avrdude -c avrispmkii -p t45 -U lfuse:w:0x62:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
After it was programmed without error, I navigated to my python file in terminal and opened a serial port by typing in: (although at times my computer wouldn't recognize the FTDI cable unless I restart my computer...so I looked into the forums and apparently if you've upgraded to El Capitan OSX on your mac, this has been a reported issue)python hello.SPU0414HR5H.py /dev/cu.usbserial-FTF4BJVR
Tools:
Eagle > Modella > MEMS mic > AVRdude