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Stepper Motor PBASICs ...

Link 2 StampWorks Manual see page 150 ... circuit setup page 146 ... program example page 151

Stepper Motor Driver Board and Stepper Motor = $4.09



From the BS2 pins on the left to the little RC timing circuit on the Right
0.1F capacitor = 104 ... and ... 220Ω = Red Red Black



From the BS2 pins on the left to the ULN2003 stepper motor driver board on the right


- the program -

' StampWorksManual-ULN2003-1.bs2

' SPECIAL NOTES
' Pin 8 goes to ground.
' Pin 9 - com - goes to the positive side of whatever voltage you are using
' for the outputs, 5V, 9V, 12V, anything up to 40V.

' Hook up a ULN2003 with 5V on pin 8, ground on pin 9.
' Common wire of stepper motor on 9 and
' coils 1 through 4 on pins 10 to 13.

'************************************************************************************
********************************************** ' The Motor and Driver Board Used instead of the LM239
' http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=26925&aff=757677
'
' Driver Board Specs:
' ULN2003 Darlington using HIGH-power stepper motor driver chip A, B, C, D four-phase LED indicates the status of the stepper motor.
' Dimensions: 3531x12mm
' Weight: 7g
'
' Motor Specs:
' Diameter: 28mm
' Voltage: 5V
' Step angle: 5.625 x 1/64
' Reduction ratio: 1/64
' Weight: 33.5g
' *************************************************************************************
*********************************************

' {$STAMP BS2}
' {$PBASIC 2.5}

' -----[ Program Description ]---------------------------------------------
'
' This program demonstrates simple stepper motor control. A potentiometer
' allows for speed and direction control. Using the L293D driver, this
' program will work with unipolar and bipolar stepper motors.

' -----[ I/O Definitions ]-------------------------------------------------
PotCW PIN 0 ' clockwise pot input
PotCCW PIN 1 ' counter-cw pot input
Coils VAR OUTB ' output to stepper coils

' -----[ Constants ]-------------------------------------------------------
Scale CON $100 ' to scale RCTIME
'Mitsumi CON 48 ' steps/rev by type 48
HobbyKing CON 80 ' steps/rev by type 80
Howard CON 100
RevSteps CON Mitsumi ' steps per revolution
NumSteps CON 4 ' use 4-step sequence 4
LastStep CON NumSteps - 1 ' last step in sequence
#DEFINE Testing = 0 ' 1 for POT testing

' -----[ Variables ]-------------------------------------------------------
idx VAR Byte ' loop counter
stpIdx VAR Nib ' step pointer
stpDelay VAR Byte ' delay for speed control
rcRt VAR Word ' rc reading - right
rcLf VAR Word ' rc reading - left
diff VAR Word ' difference in readings

' -----[ EEPROM Data ]-----------------------------------------------------
' __
' ABAB
' -----
Step1 DATA %1100
Step2 DATA %0110
Step3 DATA %0011
Step4 DATA %1001

' -----[ Initialization ]--------------------------------------------------
Setup:
DIRB = %1111 ' make P4..P7 outputs
stpDelay = 5 ' set step delay
' -----[ Program Code ]----------------------------------------------------
Demo:
FOR idx = 1 TO RevSteps ' 1 rev forward
GOSUB Step_Fwd
NEXT
PAUSE 200
FOR idx = 1 TO RevSteps ' 1 rev back
GOSUB Step_Rev
NEXT
PAUSE 200
Main:
HIGH PotCW ' read clockwise position
PAUSE 1
RCTIME PotCW, 1, rcRt
HIGH PotCCW ' read ccw position
PAUSE 1
RCTIME PotCCW, 1, rcLf
rcRt = (rcRt */ Scale) MAX 600 ' set speed limits
rcLf = (rcLf */ Scale) MAX 600
diff = ABS (rcRt - rcLf) ' get difference
stpDelay = 100 - (diff / 6) MIN 2 ' calculate step delay
IF (diff < 25) THEN ' allow for dead band
GOTO Main
ELSE ' do a step
IF (rcLf < rcRt) THEN
GOSUB Step_Fwd
ELSE
GOSUB Step_Rev
ENDIF
ENDIF
GOTO Main ' repeat

' -----[ Subroutines ]-----------------------------------------------------
' Turn stepper clockwise one full step
Step_Fwd:
stpIdx = stpIdx + 1 // NumSteps ' point to next step
GOTO Do_Step
' Turn stepper counter-clockwise one full step
Step_Rev:
stpIdx = stpIdx + LastStep // NumSteps ' point to previous step
GOTO Do_Step
' Read new step data and output to pins
Do_Step:
READ (Step1 + stpIdx), Coils ' output new coil data
PAUSE stpDelay ' pause between steps
RETURN





************************************************************************************


Wiring Diagram ...


Now a the same Stepper Motor and Parallax HomeWork Board but with the SparkFun Easy Stepper Driver


Sample Stepper Motor D.A.I.R.-S42 BS2 PBASIC to get you started;

Full Speed Loop for Stepper Motor;

cwfullspeed:
DEBUG CR, "Full Speed Clockwise", CR
FOR I = 1 TO 1600 ' 1-full revolution of test motor pulled from an ATM machine is 1600 STEPS

LOW 0 ' BS2 PIN 0 to Direction Pin on motor controller
LOW 1 ' Pre STEP set LOW to ramp up for triggering a STEP from BS2 PIN 1 to motor controller STEP pin
HIGH 1 ' STEP from BS2 PIN 1 to motor controller STEP pin causes motor to take a STEP
NEXT
RETURN


ccwfullspeed:
DEBUG CR, "Full Speed Counter Clockwise", CR
FOR I = 1 TO 1600 ' 1-full revolution of test motor pulled from an ATM machine is 1600 STEPS

LOW 0 ' BS2 PIN 0 to Direction Pin on motor controller
LOW 1 ' Pre STEP set LOW to ramp up for triggering a STEP from BS2 PIN 1 to motor controller STEP pin
HIGH 1 ' STEP from BS2 PIN 1 to motor controller STEP pin causes motor to take a STEP
NEXT
RETURN


Adding MicroSTEPS is easy with the motor controller I'm using;

cw:
DEBUG CR, "Clockwise", CR
FOR i = 1 TO 400 ' Step Count

LOW 0 ' Direction
LOW 1 ' Pre STEP
HIGH 1 ' STEP
HIGH 2 ' MS1 set the MS1 PIN
HIGH 4 ' MS2 set the MS2 PIN
' PULSOUT 1, 1000 ' STEP Speed
' PAUSE 5
NEXT
RETURN


MS1 - MS2 Use Chart
-----------------------------
LOW - LOW = FULL STEP
HIGH - LOW = HALF STEP
LOW - HIGH = QUATER STEP
HIGH - HIGH = EIGHTH STEP

Just set MS1 HIGH for 1/2 STEPs and setting both MS1 and MS2 HIGH gives 1/8th STEPs...

Adding a PAUSE before the NEXT in the example FOR/NEXT loops you can slow down the speed of the motor.





-RoboKeyboards-


RK-06 ... Home Hobby RoboKeyboard






The Robot Hobby Shop
- HUGE SAVINGS ON YOUR HOBBY COMPONENTS -


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Rover 5 Tracked Robot Chassis $34.12

I-Racer Android R/C Car (Bluetooth Control) $18.99

Mr. General - My First Robot Kit $40.17

Simple Expandable Robot Chassis (KIT) $10.15

Mini Biped Interactive Robot (KIT) $38.15

Aluminum 4WD Robot Chassis - Black (KIT) $42.09

Aluminum 4WD Robot Chassis - Gold (KIT) $42.09

Rover 5 Tracked Robot Chassis Without Encoder $26.44

Robotic Gappler $50.39

QuadBot 4 Legged Robot Chassis (Kit) $60.39

Adventure Bot Interactive Robot $42.06


OmniWheels & Wheels

41x14mm Plastic Omni Wheel (2Pcs/Bag) $5.89

51x17mm Plastic Omni Wheel (2Pcs/Bag) $6.29

55x45mm Plastic Omni Wheel 16mm Hex (2Pcs/Bag) $16.38

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70x30x55mm Steel Ball Omni Wheel $1.39

50x23x25mm Steel Ball Omni Wheel $1.05

49x20x32mm Steel Ball Omni Wheel $1.15


Geared Motors

Geared Motor - Offset Shaft (2Pcs/Bag) $3.29

Geared Motor w/ 90 Deg Shaft (2Pcs/Bag) $3.29

294RPM Brushed Motor w/ 34:1 Gearbox $8.69

133RPM Brushed Motor w/ 75:1 Gearbox $8.69


Robot Servos

HXT12K 10kg Servo (metal gear) 55g / 10kg / .16sec (USA Warehouse) $8.64

Turnigy TGY-S801D Digital Robot Servo 6.5kg / 0.12sec / 40g $12.95

Turnigy TGY-S901D Metal Gear Digital Robot Servo 13kg / 0.14sec / 58g $9.99

Turnigy TGY-S902 Metal Gear Digital Robot Servo 13kg / 0.14sec / 58g $9.84


Arduino, Robot Sensors and Components:

Educational LCD Display Electronics Training Kit $41.99

Ultrasonic Module HC-SR04 Arduino $2.98

Multiwii MWC FC Bluetooth Module Programmer (Android compatible) $7.49

MultiWii PRO Flight Controller w/MTK GPS Module $64.99

Multiwii and Megapirate AIO Flight Controller w/FTDI (ATmega 2560) V2.0 $47.99

Arduino Mega 2560 Microcontroller Board $17.60

Arduino Uno - Atmel Atmega 328-PU $11.18

MultiWii MicroWii ATmega32U4 Flight Controller USB/BARO/ACC/MAG $33.27

Arduino LCD Keypad Shield $8.49

Arduino Uno R3 Microcontroller - Atmel ATmega328 $14.52

Arduino Ethernet Shield V1.1 $16.92

MultiWii 328P Flight Controller w/FTDI & DSM2 Port $27.29

MultiWii NanoWii ATmega32U4 Micro Flight Controller USB/GYRO/ACC $19.99

UBLOX LEA-6H GPS Module w/Built-in Antenna 2.5m Accuracy $53.59

Arduino Nano V3.0 Microcontroller Board $9.69

Multiwii Compass Module HMC5883L $7.49

Multiwii Barometer BMP085 $7.49

Arduino Sensor Shield V4 digital analog module $5.37

Arduino Pro Mini Microcontroller 3.3V/8MHz w/Mini USB Adapter $21.89

Arduino USBtinyISP V2.0 $7.94

Arduino Digital Output Port Shield $4.85

Arduino Sensor Shield V5.0 Sensor Expansion Board $9.99

2.4Ghz AV FPV Receiver (Arduino Compatible) $12.53

Arduino XBee PRO Shield for Wireless Module $7.67

Arduino Sensor Shield V5.0 Sensor Expansion Board $9.59

Arduino Sensor Shield V5.0 Sensor Expansion Board $9.59

Arduino Mini Flame Fire Wavelength Sensor $2.69

Universal Sensor Adapter for Arduino $2.81

LED Matrix 8x8 - Triple Color RGB Common Anode Display $6.99

Arduino MEGA ProtoShield V3 Prototype Development Shield $10.33

LCD 12864 Module V2.0 for Arduino $21.79

Arduino Fio ATmega328P Microcontroller $14.24

Arduino Color Recognition Sensor Module $6.84

MultiWii Lite V1.0 Flight Controller w/FTDI $25.65

Arduino Prototype Development Shield $2.69

Colorduino V2.0 RGB LED Matrix Driver $18.47

Arduino Mini USB Cable $1.49

Arduino V0.3 XBee PRO Shield for Wireless Module $9.59

PIR V2.0 Body Movement Detection Sensor for Arduino $7.23

Arduino Analog Variable Rotation Sensor $2.69

ENC28J60 Ethernet Module for Arduino $6.51

MultiWii SE V2.0 Flight Controller w/FTDI $43.99

Arduino Barometric Pressure Sensor - BMP085 Breakout $9.38

Arduino Analog Temperature Sensor Module $2.50

Arduino Light Sensor Module with cable $2.69

Arduino Triple-Axis Digital Output Gyro Sensor ITG-3205 Module $11.07

Arduino Temperature and Humidity Sensor with cable $2.93

433MHz Superheterodyne 3400 RF Transmitter and Receiver $6.79


LiPo Battery Packs

Turnigy 2200mAh 3S 20C Lipo Pack $7.89

Turnigy 160mAh 1S 30C (Eflite, Minium compatible) $1.69

Turnigy Soft Silicone Lipo Battery Protector (White) $1.49

Turnigy nano-tech 130mah 1S 25~40C Lipo Pack (Kyosho, Eflite, Parkzone Etc) $1.26

Turnigy nano-tech 160mah 1S 25~40C Lipo Pack (Kyosho, E-flite Nano CP X, Parkzone Etc) $1.40

Turnigy nano-tech 300mah 1S 35c Lipo Pack (Suits FBL100 and Blade mCPx) $4.49

Turnigy nano-tech 450mAh 2S 65-130C Lipo Pack (E-flite Blade 130X) $7.59

Turnigy nano-tech 160mah 1S 25~40C Lipo Pack (Fits Align Trex 100) $1.30

Turnigy nano-tech 300mah 2S 35~70C Lipo Pack $4.07

Turnigy nano-tech 1300mah 3S 25~50C Lipo Pack $9.16

Turnigy nano-tech 300mah 1S 45C Lipo Pack (Suits FBL100 and Blade mCPx) $5.49

Turnigy nano-tech 2200mah 3S 25~50C Lipo Pack $17.49

Turnigy nano-tech 600mah 1S 35~70C Lipo Pack (Fits Nine Eagles Solo Pro 328, Eflite MQX, 120SR) $2.67

Turnigy nano-tech 130mah 1S 25C Lipo Pack (Nine Eagles style - T2 Twin Rail for older models) $1.04

Turnigy 2200mAh 3S 25C Lipo Pack $9.59

Turnigy nano-tech 180mAh 2S 25C Lipo Pack (E-flite micro series compatible) $4.99

Turnigy 1450mAh 3S 11.1v Transmitter Lipoly Pack $7.69

Turnigy nano-tech 160mah 1S 25C Lipo Pack (Nine Eagles style - T1 Single Rail for 2010+) $1.14

ZIPPY 240mAh 20C single cell $1.71

Turnigy nano-tech 130mah 1S 25C Lipo Pack (Nine Eagles style - T1 Single Rail for 2010+) $1.04

Turnigy nano-tech 300mah 1S 35~70C Lipo Pack (Fits Nine Eagles Solo-Pro 100) $1.78

Turnigy nano-tech 160mah 1S 25C Lipo Pack (Nine Eagles style - T2 Twin Rail for older models) $1.14

ZIPPY Flightmax 8000mAh 4S1P 30C $57.44

Nine Eagles replacement High-Cap 150mAh 1S LiPo $1.75

Turnigy nano-tech 2200mah 3S 35~70C Lipo Pack $18.49

Turnigy nano-tech 260mah 2S 35~70C Lipo Pack (E-flite EFLB2002S25 micro series compatible) $4.99

Turnigy nano-tech 750mah 1S 35~70C Lipo Pack (Fits Nine Eagles Solo-Pro 180) $2.29

Turnigy nano-tech 460mah 3S 25~40C Lipo Pack $6.13

Turnigy nano-tech 260mAh 1S 35-70C Lipo Pack (QR Ladybird/Genius CP/Mini CP) $2.29

ZIPPY Flightmax 1500mAh 3S1P 20C $7.44

Turnigy nano-tech 300mah 1S 45~90C Lipo Pack (Fits Nine Eagles Solo-Pro 100) $2.51

ZIPPY Flightmax 1300mAh 3S1P 20C $5.74

ZIPPY Flightmax 1000mAh 3S1P 25C $5.31

Turnigy nano-tech 850mah 2S 25~40C Lipo Pack $5.99

Turnigy nano-tech 300mah 2S 45~90C Lipo Pack $4.13

Turnigy nano-tech 180mah 2S 25~40C Lipo Pack $3.90

Turnigy nano-tech 5600mah 2S2P 50~100C Hardcase Lipo Pack (ROAR APPROVED) $33.97

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ZIPPY 350mAh 20C single cell $2.47

Turnigy nano-tech 5300mah 2S2P 30~60C Hardcase Lipo Pack (ROAR APPROVED) $26.39

Turnigy nano-tech 950mah 1S 25~50C Lipo Pack (Fits Walkera V120, X100) $3.40

NE-B918 120mAh 1S 10C (V2) OEM Replacement for: NE4950001 $1.23

Rhino 360mAh 2S 7.4v 20C Lipoly Pack $4.23

ZIPPY Flightmax 500mAh 2S1P 20C $4.14

ZIPPY Compact 1000mAh 3S 35C Lipo Pack $6.05

Rhino 610mAh 2S 7.4v 20C Lipoly Pack $3.86

Turnigy nano-tech 120mAh 2S 25C Lipo Pack (E-flite micro series compatible) $4.19

Turnigy nano-tech 1400mah 3S 40~80C Lipo Pack (TRA2823 Traxxas 1/16 models) $12.14

Turnigy nano-tech 180mah 3S 25~40C Lipo Pack $5.85

Turnigy nano-tech 1300mah 2S 25~50C Lipo Pack $5.95



Save a little on your standard hobby servos:

Corona 929MG Metal Gear Servo 2.2kg/ 12.5g/ 0.10sec $4.55

Turnigy TGY-9018MG Metal Gear Servo 2.5kg/13g/0.10 $4.83

Corona 919MG Metal Gear Servo 1.7kg/ 12.5g/ 0.06sec $5.90

HobbyKing 929MG Metal Gear Servo 2.2kg/ 12.5g/ 0.10sec $4.55

Corona 939MG Metal Gear Servo 2.5kg/ 12.5g/ 0.14sec $4.37

HK-15178B Digital MG Servo 13.5g / 1.5kg / 0.08s $3.89

Turnigy TGY-R5180MG 180 Degree Metal Gear Analog Servo $4.57

DS65HB Digital High Speed Servo 6.5g/1.5kg/.07sec $4.99

H-King Ball Bearing Analog Servo 39g/4.5kg cm/0.13s $4.99

Turnigy MG90S Metal Gear Servo 1.8kg / 13.4g / 0.10sec $4.99

Turnigy 1440A Servo 4.4g/0.8kg/.10sec (V2) $3.39

HKS-9650 High Speed Servo 2.3kg/ 25g/ 0.08sec $4.99

Turnigy Servo 5.5g/0.9kg/.10sec $3.33

HXT 6.9kg / 39.2g / .16sec Twin bearing servo $4.59

HK15148 Analog Servo 17g / 2.5kg / 0.14s $2.54

Turnigy 1370A Servo 3.7g/0.4kg/.10sec $2.86

HXT900 9g / 1.6kg / .12sec Micro Servo $2.69


Other Peripherals?

HD Wing Camera 1280x720p 30fps 5MP CMOS $36.69

HD Wing Camera 1280x720p 30fps 5MP CMOS $36.32

HD Wing Camera II - Full HD 1920x1080P 30FPS $95.99

Hobbyking OSD GPS Module $41.53

F-TEK OSD Video Overlay Module w/GPS $104.99

HobbyKing Tiny OSD III (w/ 10Hz GPS and 60A Current sensor) $95.63

True 640x480 8ch 2.4/5.8Ghz Dual Rx w/ HeadTrack Video Goggles $359.95

FatShark Full Color 640x480 FPV Video Goggles $249.95

SD DVR High Resolution Digital Video Recorder for FPV $47.37


Motor Controllers/ESC

HobbyKing 6A ESC 0.5A UBEC $7.07

Hobbyking SS Heli Series 70-80A ESC w/UBEC $17.76

HobbyKing 30A BlueSeries Brushless Speed Controller $10.59

Hobbyking SS Series 18-20A ESC (card programmable) $7.75

H-KING 20A Fixed Wing Brushless Speed Controller $8.83

Hobbyking YEP 45A (2~6S) SBEC Brushless Speed Controller $26.20

HobbyKing 70A Boat ESC 3A UBEC $27.62

Hobbyking SS Series 8-10A ESC $6.53

H-KING 10A Fixed Wing Brushless Speed Controller $6.10

HobbyKing 30A Boat ESC 3A UBEC $12.55

HobbyKing 50A Boat ESC 3A UBEC $20.09

Hobbyking SS Heli Series 50-65A ESC $11.16

Hobbyking YEP 80A (2~6S) SBEC Brushless Speed Controller $40.93

Hobby King Brushless Car ESC 100A w/ Reverse $37.09

Hobbyking YEP 100A (2~6S) SBEC Brushless Speed Controller $50.27

Hobbyking SS Series 40-50A ESC $11.30

Hobbyking SS Series 50-60A ESC $13.84

Hobby King 80A ESC 4A SBEC $29.63

Hobbyking SS Series 190-200A ESC $30.24

HobbyKing Brushless Car ESC 45A w/ Reverse $20.65

HobbyKing 120A ESC 4A UBEC $47.03

HobbyKing Brushless Car ESC 60A w/ Reverse $27.83

HobbyKing Brushless Car ESC 30A w/ Reverse $15.55

HobbyKing 100A ESC 4A UBEC $40.62

HobbyKing ESC Programming Card $6.53

Hobbyking SS Series 90-100A ESC $24.51

H-KING 50A Fixed Wing Brushless Speed Controller $16.64

HobbyKing 70A ESC 4A UBEC $29.67

HobbyKing 10A ESC 1A UBEC $6.88

Hobbyking SS Series 15-18A ESC $6.58

H-KING 35A Fixed Wing Brushless Speed Controller $13.03

Hobbyking SS Series 18-20A ESC $7.18

Hobby King 60A ESC 4A UBEC $16.89

HobbyKing 50A ESC 4A UBEC $18.75

HobbyKing 12A BlueSeries Brushless Speed Controller $7.62


Radio?

Turnigy 9X 9Ch Transmitter w/ Module & 8ch Receiver (Mode 2) (v2 Firmware) $64.75

Turnigy 9X 2.4GHz 8Ch Receiver (V2) $9.11

Hobby King 2.4Ghz 4Ch Tx & Rx V2 (Mode 2) $26.37

Hobby King 2.4Ghz 6Ch Tx & Rx V2 - Mode 2 $29.99

Hobby King GT-2 2.4Ghz Receiver 3Ch $5.97


Futaba

Corona R8FA 2.4Ghz Fasst Compatible Reciver $28.51

Corona 2.4Ghz 6ch Receiver (V2 DSSS) $14.03

Corona R4FA-SB 2.4Ghz FASST Compatible S.BUS Receiver $26.92

Corona R6FA-SB 2.4Ghz FASST Compatible S.BUS Receiver $29.59

Corona 2.4Ghz Futaba Module & Rx (V2 DSSS) $38.19


JR

OrangeRx Open LRS 433MHz TX Module (JR/Turnigy compatible) $29.99

DM4F 4 channel DMSS Parkfly Receiver $15.75

OrangeRX DSMX/DSM2 2.4Ghz Transmitter Module (JR/Turnigy compatible) $29.99

FrSky DJT 2.4Ghz Combo Pack for JR w/ Telemetry Module & V8FR-II RX $36.44

FrSky DF 2.4Ghz Combo Pack for JR w/ Module & RX $51.13

JR RG1131B 11-Channel Full Range 2.4GHz DMSS Receiver w/Telemetry $169.89

JR RG411B 4-Channel Park Flyer 2.4GHz DMSS Receiver w/Telemetry $44.02

JR RG411BL 4-Channel Park Flyer 2.4GHz DMSS Receiver w/Telemetry $46.68

JR RG611B 6-Channel Park Flyer 2.4GHz DMSS Receiver w/Telemetry $53.99

JR XG6 6-Channel 2.4GHz DMSS Transmitter w/RG631B Receiver (Mode 2) $186.94

JR RG631B 6-Channel Full Range 2.4GHz DMSS Receiver w/Telemetry $76.33


Spektrum

OrangeRx R615 Spektrum/JR DSM2 Compatible 6Ch 2.4Ghz Receiver $5.89

OrangeRx R620 Spektrum/JR DSM2 Compatible Full Range 6Ch 2.4Ghz Receiver w/Failsafe $12.95

OrangeRx R100 Satellite Receiver $11.56

OrangeRx R415 Spektrum DSM2 Compatible 4Ch Micro 2.4Ghz Receiver $9.99

OrangeRx R710 Spektrum DSM2 Compatible 7Ch Receiver w/Failsafe $18.95

OrangeRx R910 Spektrum DSM2 9Ch 2.4Ghz TwinPort Rx $22.95

OrangeRX DSMX/DSM2 2.4Ghz Transmitter Module (JR/Turnigy compatible) $29.99

OrangeRx R410 Spektrum DSM2 Compatible 4Ch 2.4Ghz Receiver $9.99

OrangeRx T-SIX 2.4GHz DSM2 6CH Programmable Transmitter w/10 Model Memory (Mode 2) $64.99

OrangeRx R610 Spektrum DSM2 6Ch 2.4Ghz Receiver (w/ Sat Port) $5.89


Stepper Motors & Controllers;

Stepper Motor and Driver Board 5V $4.09


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