| For this week, I explored 2 input devices. The Push Button and the Ultrasonic Sensor. I used the hello board for both the sensors. I used an FTDI cable for the serial output and was able to see when I pushed the button. | |
Ultrasonic Sensor |
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| For the Ultrasonic sensor, I used the pins from the MOSI and MISO used early on by the FabISP. I wrote a simple programme such that the LED would blink when my hand goes over the sensor. Below is the video of it working. | |
Next I tried to do a serial write of the distance. but the arduino IDE gave a compilation error that my sketch was too big. I would need to debug the programme. The sketch could be downloaded from the link below https://www.dropbox.com/sh/v138wly2edj6ywe/AAAz05hOPRMaLPD3T00AyPUia?dl=0 or
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| Sketch too Big! | |
Phototransistor |
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| I am going to make a phototransistor board with an onboard LED. Work first begins on the eagle board followed by PCB milling and stuffing the board. | |
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| Phototransistor Schematic | Board Layout |
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| Phototransistor board with LED | |
| I then went on to write 2 programmes. The 1st program, the LED will turn off with Light is is flashed on the phototransistor. | |
| The second program outputs the sensor pwm data using serial. The LED is made to flash to indicate that the program is running. | |
The Eagle CAD and programs can be downloaded from https://www.dropbox.com/sh/v138wly2edj6ywe/AAAz05hOPRMaLPD3T00AyPUia?dl=0 or
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