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Dremel Speed - The circuit at right uses a logi-level N-channel FET driven
directly by the PIC. The PIC creates a variable PWM signal to power the
motor. Motor current is sensed using a combined 0.5 ohm resitance to ground.
Since this …. [Luhan Monat - Mesa Arizona] |
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Driving a relay with a CPU - ASCII format (circuit added 2/07) |
Driving Bipolar Stepper Motors - The permanent magnet rotor has the same
number of pole pairs as the stator coil section. Interaction between the rotor and
stator (opposite poles attracting and like poles repelling) causes the rotor to move ¼
of a pole pitch per winding polarity change. Motors are available in either 2 coil
(bipolar) or 4 coil (unipolar) windings. In the unipolar ….(design added 11/08)
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DS1821 programmable thermostat - (diagram added 2/07) |
DSSSE: Dual Slope-Sampling Solar Engine - Voltage-Controlled Solar Engine:
The dual slope sensing SE is another Wilf Rigter design; this SE is optimized for
'bots with a low-power standby mode. (added 11/05) |
Dual Channel Servo Pulse to H-Bridge Interface - (circuit / schematic design
added 7/06) |
Dual Channel Servo Pulse to H-Bridge Interface ~mixos - (electronic circuit
added 2/07) |
Dual DC Motor Speed Controllers Navigate Robots - 03/29/01 EDN-Design
Ideas....Mobile robots need simple and lightweight dc-motor-speed-control hardware
that can work with low-power batteries. Flip-flop type navigation systems allow only
one motor to operate at a time while the other motor remains off. Navigation direction
changes....[Design Idea by Shyam Sunder Tiwari, Robotics Software Pvt Ltd, Gwalior,
India] |
Dual Fan Controller - Each fan turns off when the temperature drops 5
degrees below its turn-on temperature. For example, if the dial is set to 80 degrees,
the fan turns on at 80 degrees and turns off at 75 degrees. This prevents the
fan from cycling on and off rapidly, which would occur if the fan turned on at 80,
started to cool the cabinet, and then immediately turned off at 79. ….(design added
11/08) |
Dual Fan Controller (David Cook) - A birthday present gone too far. An
overengineered temperature-based automatic twin fan controller with brass face to keep
a kitchen PC cool. (project added 11/06) |
Dual Slope-Sampling Solar Engine - Voltage-Controlled Solar Engine: The dual
slope sensing SE is another Wilf Rigter design; this SE is optimized for 'bots with a
low-power standby mode. (added 11/05) |
Dual Stepping Motor Drivers using UDN2540 - In this design we use two
UDN2540B to drive two stepping motors at the same speed. Each motor can be
independently controlled. The S1, S2 switches control the ON/OFF and the moving
direction of Motor1. The S3, S4 control the Motor2, respectively....(electronic
circuit added 4/05) |
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