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This is a Quickie Servo Tester.The project is based on a ATMEL AT90S2343 MCU with 8 pins. This little MCU is very nice in that it has 2k of Flash Program ROM, 128 bytes of RAM, and 128 bytes of EEPROM. That is a lot of power in a little 8 pin package. It has five I/O pins of which we are using four in this project. [via]
Quickie Servo Tester - [Link]
A second USB servo controller. This one extends Ronald Schaten’s USB-Servo to 6 servos with a separate supply. It was designed to control the servos of a robot. This device was designed to control standard hobby radio control servos via a PCs USB port. Standard RC servos need a power supply of between 4.8 and 6 volts. They also have a Pulse Width Modulation (PWM) signal input which controls the angle of the servo. This device supplies up to 6 such servos with a 5V supply and the PWM signal to control the servo.
USB-Servo 2 - [Link]
The 555 Stepper Pulse Generator kit will help you with the pulse required to drive your favorite DC Servo Motor application. This kit uses the famous 555 timer IC for generating the Stepping Pulse.
- Input – 5 – 12 VDC @ 25 mA
- TTL/CMOS interfaceable
- Jumper selectable two speed operation
- Onboard preset to vary the duty cycle
- Power-On LED indicator
- Terminal pins for easy interfacing of the kit
- Four mounting holes of 3.2 mm each
- PCB dimensions 39 mm x 37 mm
555 stepper pulse generator - [Link]
DC Servo Motor Driver kit, designed using MC33030 IC, is the fastest and low cost way of getting your DC Servo Motor up and running.
- Input – 12 VDC
- Output – can drive upto 1 A Load
- Overcurrent shutdown, overvoltage shutdown
- Programmable reference input
- Power-On LED indicator
- Relimate connector for interfacing the kit
- Four mounting holes of 3.2 mm each
- PCB dimensions 45 mm x 54 mm
DC servo motor driver - [Link]
The PeanutBot robot consists of three microphone circuits, three servo motors, an MCU and a PC. The three microphones were used to triangulate the angle of the source relative to the robot. The audio source plays a continuous stream of pulses. Pulses were chosen over a continuous tone because, instead of detecting phase difference in the audio signal, our system detects the arrival time of the signal at a certain amplitude at each microphone.
Autonomous Sound Finding Robot - [Link]
Mathieu writes -
I whipped up a little interface yesterday, to connect an Arduino to a Radio Control Transmitter. This can be used to send commands from the Arduino to the transmitter, which will mix them with the manual input and radio them to the radio-controlled model.
The Arduino is sending commands (PPM-encoded series of servo-position pulses) to the RC transmitter (a Multiplex Royal Evo 12, in this case), which mixes them with manual input and radios them to the radio-controlled model.
You can see on the transmitter’s display that channels 1, 2, 4 and 5 are broadcasting values while the sticks are centered. If I had video, you could see them change over time under the Arduino’s control.
Arduino to radio-control transmitter interface – [Link]
Wireless servo controller allows to control two servo motors remotely. It can be used for wireless camera tracking or simply in any robotics project. Receiver and transmitter uses a Laipac TRW-24G 2.4GHz wireless modules.
Any standard servos can be controlled with this device. RF controller controls with a very little latency, which is mainly depending on servos latency. Receiver uses PIC18LF2550 microcontroller with firmware written by using CCS PIC C compile. If put manual joystick control, this could be really powerful remote tracking system. [via]
PIC based wireless servo controller - [Link]
This instructable describes how to drive hobby servos (the kind used in RC planes, cars, etc.) into your microcontroller projects. The control signals of servo are: a red wire, 5 volts works fine, ground (black wire) connectionsa and a control signal on the third wire (usually white or yellow). The signal is almost pulse width modulated, except that it doesn’t have a fixed period. It is composed of pulses of voltage, the duration of which determine the angle of the output shaft. The pulses can be from 0.9 ms to 2.1 ms long, 1.5 ms being the center position (in other words, pulse duration varies linearly with shaft angle).
Use a PIC Microcontroller to Control a Hobby Servo - [Link]
schatenseite.de writes:
The USB-Servo is a device to control a servo via USB. A servo is a motorized device that is commonly used in remote controlled cars and planes. Servos are connected with three-wire-cables. A red and a black one for the power, and a yellow one for the signal. Power has to be between 4.8 and 6 volts, so the 5 volts from the USB-port is in the range. The signal doesn’t take much current, so you can connect it directly to the controller. The angle of the servo is controlled with pulse width modulation (PWM). It gets a signal of about 50Hz (one pulse every 20ms), the length of the pulse tells the servo the angle to adjust.
USB Servo Controller - [Link]
