Raspberry Pi hennisoft.ie

robot-arm:

small demonstration how the robot-arm (from Maplin) can be controlled by Raspberry PI.
A Python script is used to directly address the USB interface from the robot-arm and to control the motors on the arm via the commands.

The robot-arm will be controlled via keyboard:

• exit with 'x'
• left/right 'a' 's'
• shoulder up/down 'e' 'd'
• elbow up/down 'r' 'f'
• wrist up/down 't' 'g'
• grip closing/opening 'q' 'w'
• lights on/off (toggle) 'l'

The movement will continue as long as specific key is pressed (except lights).

that's how it looks like (in doubt, please download original AVI from top right: video ~32MB):

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item-list:

• Raspberry Pi
• ... and the robot-arm (from Maplin)

sourcecode:

sourcecode robotarm.py
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multifunction-display:

2x16 character display driven by Raspberry-Pi.
Push-button allows to toggle different functions/displays.
Temperature sensor TMP36 and AD-converter MCP3008 enables Raspberry-Pi to show e.g. current/min/max temperature.
Due to push-button you can toggle between 3 different informations:

• greetings + IP-address
• current date and time
• current temperature and measured min/max temperature

Programm can be interrupted by Ctrl + C.

that's how it looks like (in doubt, please download original AVI from top right: video ~57MB):

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item-list:

• Raspberry Pi
• MCP3008 AD-converter
• TMP36 sensor
• push-button
• 10k Ω potentiometer
• LCD-display (2x16)
• ... and a few cables

circuit:

sourcecode:

Quellcode lcd_temp.py
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Zumo-Control control Zumo via Bluetooth

control Zumo-chassis with Android-App via Bluetooth. Controlling via:

• bottons
• decline control

that's how it looks like:

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item-list:

• Raspberry Pi zero w Details
• Zumo Chassis Kit Details
• 2x 100:1 Micro Metal Gearmotor HP 6V Details
• DC Motor Driver 2x1.5A (HR8833) Details
• ... and a few cables

circuit:

source Python:

source control-zumo.py
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source Java (Android):

source MainActivity.java
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Devastator surveillance-robot:

semi-autonomous robot, which will be controlled via webinterface and includes following features:

• livestream video
• 4x ultrasonic distance sensors
• control of movable camera which is IR capable and active IR-led
• controlable led (or any digital output)
• status feedback (like batterie status, resource usage)
• 3-axis sensor + compass

item-list:

• Raspberry Pi zero w details
• Devastator (Tank Mobile Robot Platform - including 2 6V motors) details
• Thunderborg (Dual 5A Motor Controller with DC/DC & RGB LED - I2C) details
• Ultraborg (PWM Servo Control w/ Ultrasonic Sensor Support - I2C) details
• CMPS10 (Tilt Compensated Compass Module - I2C) details
• 4x HC-SR04 (Ultrasonic Distance Sensor) details
• ADA1967 (Mini Pan-Tilt Kit - Assembled with Micro Servos) details
• Raspberry Pi Camera Board (Night Vision & Adjustable-Focus Lens) details
• BC337 NPN transistor
• rectifier diode
• 2x 330 Ω resistors
• 2.2 µF capacitor
• mini breadboard
• ... and a few cables

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Python sourcecode:

Quellcode devastator3.py
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HTML source:

Quellcode devastator2.html
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... ready, but not documented yet. Please see some pictures meanwhile:

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