High power through the jump starting battery was nice but the connection was troublesome and unfused. An inexpensive power cord for a car's cigarette lighter was purchased at a surplus store. This had a 15 amp fuse installed which was quickly tripped when I hooked up the wires incorrectly to an H-bridge. Some smoke came off one of the components and the fuse was replaced.
When the H-bridge and power cord were connected properly, a meter was connected to show that voltage was indeed going to the correct pins. The functionality of the H-bridge was not tested since it could lead to run-away speed on the motor.
A simple sketch was written for Arduino. This would rely on two buttons to slowly ramp up the speed on the motor in forward or reverse. All power would be cut when the button was released. There was no need to debounce the buttons.
Downloads:
The rest of the posts for this project have been arranged by date.
First time here?
Completed projects from year 1.
Completed projects from year 2.
Completed projects from year 3.
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2016-12-02 (F)
Cigarette lighter plug and a blown fuse
When the H-bridge and power cord were connected properly, a meter was connected to show that voltage was indeed going to the correct pins. The functionality of the H-bridge was not tested since it could lead to run-away speed on the motor.
Ensuring the H-bridge and battery were connected properly
A simple sketch was written for Arduino. This would rely on two buttons to slowly ramp up the speed on the motor in forward or reverse. All power would be cut when the button was released. There was no need to debounce the buttons.
Screenshot of Arduino sketch
Downloads:
- Gears
- Panel layout PDF or DWG
- S Symbol Plate OpenSCAD source or STL model
- Ultrasonic flush-mount source or STL
- Internal ring gear
- Spring hub includes source and STL for metric and imperial
- Slow ramping Arduino sketch
- 1 Small Arduino Micro
- 2 Stereo potentiometers (10K)
- 4 Multi-turn potentiometers (10K)
- 2 Twelve volt DC motors
- 1 Dual H-bridge
- 2 Ultrasonic distance sensors
- 1 Sine wave generator or the Amazon version
- 1 Voltage Regulator
- 1 Twelve volt three amp power supply
The rest of the posts for this project have been arranged by date.
First time here?
Completed projects from year 1.
Completed projects from year 2.
Completed projects from year 3.
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2016-12-02 (F)
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