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LiTeRo - The Little Telepresense Robot Kit

by Physics_Dude Jun 9, 2018
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would anybody be abled to provide a working raspberry image? i cant get it to work..

I'd loved to know if It was possible some información about the mount schema of interconnected board that It IS neccesary for the advanced Mode

@sorryman1980: I've been working on this, slowly, and most of the connections are quite straightforward. You need to connect each component to 5V and ground, put the current sensor between the battery and the TP4056. Put the DC-DC stepups between the TP4056 and the rest of the electronics. Configure the ADC address by connecting it to ground as described here: https://learn.adafruit.com/adafruit-4-channel-adc-breakouts?view=all

About what GPIO pins to use for each component, the ADC and the IMU will use the i2c bus, the rest are detailed in the github repository, in the readme.

Finally, the resistors and such you see on some pictures are a low pass filter for the audio output, as detailed here: https://learn.adafruit.com/adding-basic-audio-ouput-to-raspberry-pi-zero?view=all

Putting everything together in a pcb has been a nightmare, but it's doable. I'm still working on it (I still haven't received the camera, and the low pass filter is pending), but for now it works great!

The only thing I'm still missing is the camera led hack. It would be great if @Physics_Dude could give us a brief description!

Hello, Take a look at this picture (bottom left) for the GPO-controlled LED mod. I believe that's a 4.7kR resistor in series with the ungrounded pin of the photo-resistor on the led board. the other leg of that resistor then goes to a GPIO pin on your Pi. https://i.imgur.com/ro8bgRS.jpg

Oh, and you need to connect the A0 from the ADC to the positive coming from the battery (for reading its voltage), and the A1 to the current sensor. I also had to modify the code so I could change the gain of the ADC for A0, so it can read beyond 4.096 volts (a lipo battery voltage goes up to 4.2v). Also, in the code the volts and the amps are multiplied by 2, I don't know why, and I had to remove that.

Same here, it would be very helpful!

nice!. I'd love to take alook at the code. I'm currently learning python.

Excellent work. Waiting for code Thanks

Excelent work !!! waiting for instructions and soft... Thanks!!

Very cool! Ill be keeping an eye out for those instructions!