April 2018
Intermediate to advanced
248 pages
5h 31m
English
Content preview from Internet of Things with Raspberry Pi 3
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Important features of Raspberry Pi 3 Model B
The following are the important features:
- Power:
- Raspberry Pi is powered by a +5.0V micro USB supply
- A 2.5 ampere power supply works well to power Pi and it uses a maximum of 1 amp
- GPIO pins can draw 50 mA of current in total, distributed across all pins where each pin can draw 16 mA
- The HDMI port uses a 50 mA current, whereas the camera module draws a 250 mA current
- A USB-based mouse and keyboard can use 100 mA to 1000 mA current
Backpowering is an issue that occurs when Pi is connected through a USB to a host system (host system can be a laptop or desktop). The host system doesn't have diode protection, which means it backfeeds the power to Pi (gives power to Pi). This power that is backfed ...
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