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Copyright © Parallax Inc.

 

 

Gimbal Joystick with Adapter (#27808) 

v1.2  11/13/2019  Page 2 of 9 

Adapter Assembly 

Using the adapter kit is optional but highly recommended. The example wiring photos in this document 

assume you are using it.  The underside of the adapter board PCB is labeled as shown at left. The top of 

the adapter board has pads to solder the 1.5 mm socket in place, as shown at right.  

 

(1)

 

Put on your safety glasses! 

(2)

 

Begin by inserting the short ends of the 3-pin headers into the PCB from the underside. 

(3)

 

Solder the 3-pin headers in place from the top of the board. 

(4)

 

Solder the 1.5 mm socket in place on top of the board. 

  

   

                            

Quick-Start Guide 

Voltage Divider Circuit 

The voltage divider is most basic circuit using the joystick: 

Horizontal 5K Pot

Vertical 5K Pot

GRN

BRN

ORG

YEL

BLU

BLK

Quad-Bearing Gimbal Joystick

Vdd

Horizontal Output Voltage

Vertical Output Voltage

 

 

The horizontal output voltage will increase as the joystick moves from left to right, from about 0.38 * Vdd 

(full left) to 0.63 * Vdd (full right). The center voltage is approximately Vdd / 2. The vertical output 

voltage covers the same range, increasing from bottom to top, with the center voltage also being 

Vdd / 2. 

 

Summary of Contents for 27808

Page 1: ...for convenient prototyping on breadboards or thru hole boards Simple soldering is required to use the optional but highly recommended adapter Features 5 k linear taper potentiometer on each axis Smoo...

Page 2: ...B from the underside 3 Solder the 3 pin headers in place from the top of the board 4 Solder the 1 5 mm socket in place on top of the board Quick Start Guide Voltage Divider Circuit The voltage divider...

Page 3: ...llowing products provide two sigma delta ADC channels each Propeller Backpack 28327 S2 Robot hacker port 28136 28336 In addition one can deploy an external ADC such as the MCP3202 604 00060 in conjunc...

Page 4: ...of 2 and 3 Joystick c http learn parallax com propeller c simple devices joystick include adcDCpropab h Include adcDCpropab include simpletools h Include simpletools int main Main function pause 1000...

Page 5: ...600 50 500 500 joy setup 1 400 500 600 0 0 1000 repeat rawh adc in 0 rawv adc in 1 pst str string 1 Raw Joystick 11 13 Horiz 14 7 pst dec rawh pst str string 14 15 pst dec joy value 0 rawh pst str str...

Page 6: ...Spin Object The Spin object joystick spin handles the scaling of the raw joystick data transforming the measurements into values that are more useful to a given application The following graph illust...

Page 7: ...ntal Vertical To measure each wiper position the attached microcontroller will charge that wiper s capacitor by outputting a high on the associated pin Then it will tri state the pin and let the cap d...

Page 8: ...basicstampsoftware STAMP BS2 PBASIC 2 5 LR VAR Word UD VAR Word DO HIGH 4 PAUSE 10 RCTIME 4 1 UD HIGH 11 PAUSE 10 RCTIME 11 1 LR DEBUG HOME Vert DEC UD CLREOL CR Horiz DEC LR CLREOL PAUSE 50 LOOP Pres...

Page 9: ...n the vertical axis Tighten to disable the return to center action Screw B Loosen to remove friction from the vertical axis Tighten to add friction Screw C Loosen to remove detents from the vertical a...

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