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Test for motor controller shield

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Romain Bazile 2020-08-03 12:52:35 +02:00
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@ -163,6 +163,24 @@ SPI ok!
done!
```
Also, to make sure the wiring is good, we are going to use `sudo i2cdetect -y 1` to see if our devices are detected:
```
pi@planktoscope:~ $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- 0d -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: 70 -- -- -- -- -- -- --
```
The device appearing at addresses 60 and 70 is our motor controller. Address `0d` is the fan controller and `3c` is the oled screen (we'll set up both a bit further down). Your version of the RGB Cooling Hat may not have the screen, it's fine as the screen is not necessary for proper operation of the Planktoscope.
In case the motor controller does not appear, shutdown your Planktoscope and check the wiring. If your board is using a connector instead of a soldered pin connection (as happens with the Adafruit Bonnet Motor Controller), sometimes the pins on the male side need to be bent a little to make good contact. In any case, do not hesitate to ask for help in Slack.
### Install RPi Cam Web Interface
You can find more information about the RPi Cam Web Interface on [eLinux' website](https://elinux.org/RPi-Cam-Web-Interface).