sra-board-hardware-design | based Development Board for Robotics
kandi X-RAY | sra-board-hardware-design Summary
kandi X-RAY | sra-board-hardware-design Summary
ESP32-based Development Board for Robotics and Embedded Applications
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Trending Discussions on Internet of Things (IoT)
QUESTION
I have js files Dashboard and Adverts. I managed to get Dashboard to list the information in one json file (advertisers), but when clicking on an advertiser I want it to navigate to a separate page that will display some data (Say title and text) from the second json file (productadverts). I can't get it to work. Below is the code for the Dashboard and next for Adverts. Then the json files
...ANSWER
Answered 2020-May-17 at 23:55The new object to get params in React Navigation 5 is:
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Power Supply Unit Microcontrollers (MCUs) usually run on 3.3V or 5V while input to a development board is normally 12V for motor control. So, a power section which converts this 12V to standard levels like 5V/3.3V for MCU and sensors is present. The previous edition of the SRA board (2019) used the LM7805 linear voltage regulator, for stepping down from 12V to 5V; this powered the ESP32. Further, this 5V was converted to 3.3V using the LD33 linear voltage regulator, used by the sensor port.
Motor Driver Motors usually run on 12V and MCU output is generally 5V/3.3V. So, an external motor driver circuitry is required to control motors according to the MCU input. The SRA Board 2019 used the L298N IC for motor-control, which is a BJT-based H-Bridge motor driver.
Sensor Port According to the external sensor types, usually development boards have onboard sensor ports where the sensors can be connected easily using FRC connector. The SRA Board 2019 had two sensor ports - one for a LSA (line sensor array) and the second for the MPU6050.
Protection against Reverse Voltage and Over Current The SRA Board 2019 used diodes for reverse voltage protection in the power-line. For the overcurrent protection of MCU and motor driver circuit, fuses of 300mA and 3A were used respectively.
Programmable Switches and LEDs Every development board should have some programmable switches and LEDs for testing, control and debugging purposes. The previous edition had a pair of programmable switches and programmable LEDs each.
Power Switch The SRA Board 2019 had a power switch for the motor driver, using which power supply to the motor driver can be toggled. Similarly, there was a switch for the ESP32 MCU.
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