H-Bridges have never been used in any project on this site but their concept was clearly explained and they are a logically designed tool. A small one was attached to a small 3.3V motor and an Arduino UNO. An Arduino Micro Pro was selected for this project but the UNO is notoriously simple to connect and the model on hand already had header terminals attached so no soldering was necessary.
Programming was not difficult. A PWM signal was applied to one pin or the other and the motor ran one direction or another at the desired speed. The gearing scheme was too much for the small motor to handle and the tolerances of the gears were insufficient for appreciable movement. A video was taken showing a gear glued to the motor axle and turning another gear mounted with a sewing pin.
The program activates the gear at maximum power in order to overcome inertia then ramps the speed (duty cycle) down to slow the motor. Code is freely available through codebender.cc
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.
2016-09-11 (Su)
Motor - H-Bridge - UNO
Programming was not difficult. A PWM signal was applied to one pin or the other and the motor ran one direction or another at the desired speed. The gearing scheme was too much for the small motor to handle and the tolerances of the gears were insufficient for appreciable movement. A video was taken showing a gear glued to the motor axle and turning another gear mounted with a sewing pin.
The program activates the gear at maximum power in order to overcome inertia then ramps the speed (duty cycle) down to slow the motor. Code is freely available through codebender.cc
Downloads:
- Gears
- Panel layout PDF or DWG
- S Symbol Plate OpenSCAD source or STL model
- Ultrasonic flush mount source or STL
- 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.
2016-09-11 (Su)
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