The SpinStudio audio / video allows an stereo amplified pair of speakers and a composite video screen to be plugged into the SpinStudio platform in a way that is compatible with Parallax's Demo board, but unlike the Demo boards, this can be unplugged when not needed, and another peripheral module can be inserted in it's place.
Socket "B" is the prefered position on the SpinStudio mainboard to maintain compatibility with existing Propeller code written for use with the Demo board.
Assembly
Start by inserting
the resistors labeled with their values in yellow in the
diagram above, into the circuit board. Turn the
circuit board over and
solder these resistors in place. Trim the protruding resistor leads.
You can insert and solder one at a time, or stuff them all in their
positions and solder them all, it's really your preference on
which assembly method you use. The color codes of the resistors
used in
this step are as follows -
Next, insert the 2 - 0.1 uF Capacitors into place (labeled 104). These are indicated as Blue "A"'s in the diagram. Now carefully turn the board over, holding the capacitors in place, and set the board face down on your work surface. Now solder them in place and trim the excess leads. The polarity on this type of capacitor is not important.
Now install the 20 pin SpinStudio connector, Green "A". Note - This component is inserted from the bottom of the board, and soldered on the top, opposite of the other components! You may want to solder 1 pin first, check to be sure the connector is positioned snuggly against the bottom of the circuit board before soldering the remaining 19 pins. Also you may want to turn the circuit board while soldering, to "attack" the pins in each row from a different angle. How you solder is up to you, but just be careful not to create any solder bridges, or dry solder joints, as they may be difficult to track down later.
Next, insert the 2 - 10uF Capacitors into place. These are indicated as Blue "B"'s in the diagram. The polarity on this type of capacitor is important!
Your kit could come with a pair of Tantalum capacitors instead of the pictured Electrolytic capacitors.
The last 2 components to be installed are the audio jack(green "B") and RCA connector(green "C"). Simply put both components in place from the top of the board, and solder the connectors in place from the rear of the board. Be generous with the solder on the ground tabs of the RCA jack to help mechanically fasten this connector.
All finished!
Now test your boards by running any demos that utilize TV output and/or sound output. I suggest Chip's "SingingDemo" to test your sound. and "Graphics_Demo" to test your video, both of which are included with the Propeller Tool software. They are in the code folder named "Library".
By replicating a "Socket B" on your Proto Board, you can plug certain SpinStudio Peripheral modules right in. The method of adding this socket is detailed here.
Study the diagram above, you'll notice that the Propeller IO lines align perfectly with the added 2x10 male header we are adding. The only connections that you'll need to wire yourself are VSS, +3.3VDC and +5VDC. The I2C lines that the SpinStudio Mainboard provides are not necessary at this point, but can be added easily when the need arises. Future Peripheral Modules may take advantage of the I2C bus.
This is a picture of a Proto Board with a completed Audio/Video Adapter installed in the proper position.
If you are ordering this module to use with a Protoboard, let me know and I will provide you with a free 2x10 male header with your order.
Graphic for protoboard provided by Jeff Ledger a.k.a. OldBitCollector, used by permission, Thanks Jeff!
- The colored bands on a 220 ohm resistor are Red-Red-Brown.
- The colored bands on a 270 ohm resistor are Red-Violet-Brown.
- The colored bands on a 560 ohm resistor are Green-Blue-Brown.
- The colored bands on a 1.1K ohm resistor are Brown-Brown-Red.
Next, insert the 2 - 0.1 uF Capacitors into place (labeled 104). These are indicated as Blue "A"'s in the diagram. Now carefully turn the board over, holding the capacitors in place, and set the board face down on your work surface. Now solder them in place and trim the excess leads. The polarity on this type of capacitor is not important.
Now install the 20 pin SpinStudio connector, Green "A". Note - This component is inserted from the bottom of the board, and soldered on the top, opposite of the other components! You may want to solder 1 pin first, check to be sure the connector is positioned snuggly against the bottom of the circuit board before soldering the remaining 19 pins. Also you may want to turn the circuit board while soldering, to "attack" the pins in each row from a different angle. How you solder is up to you, but just be careful not to create any solder bridges, or dry solder joints, as they may be difficult to track down later.
Next, insert the 2 - 10uF Capacitors into place. These are indicated as Blue "B"'s in the diagram. The polarity on this type of capacitor is important!
Your kit could come with a pair of Tantalum capacitors instead of the pictured Electrolytic capacitors.
- If you have the blue Electrolytic capacitors - be sure to install the capacitors with the black stripe, indicating the negative lead, facing the audio and video jack.
- If you have the yellow Tantalum capacitors - be sure to install the capacitors with the short lead indicating negative, facing the audio and video jack. (note - there is also a small "+" symbol printed on the capacitor body the lead beneath this symbol should be inserted closest to the resistors on the PCB)
The last 2 components to be installed are the audio jack(green "B") and RCA connector(green "C"). Simply put both components in place from the top of the board, and solder the connectors in place from the rear of the board. Be generous with the solder on the ground tabs of the RCA jack to help mechanically fasten this connector.
All finished!
Now test your boards by running any demos that utilize TV output and/or sound output. I suggest Chip's "SingingDemo" to test your sound. and "Graphics_Demo" to test your video, both of which are included with the Propeller Tool software. They are in the code folder named "Library".
Using with a Proto Board
By replicating a "Socket B" on your Proto Board, you can plug certain SpinStudio Peripheral modules right in. The method of adding this socket is detailed here.
Study the diagram above, you'll notice that the Propeller IO lines align perfectly with the added 2x10 male header we are adding. The only connections that you'll need to wire yourself are VSS, +3.3VDC and +5VDC. The I2C lines that the SpinStudio Mainboard provides are not necessary at this point, but can be added easily when the need arises. Future Peripheral Modules may take advantage of the I2C bus.
This is a picture of a Proto Board with a completed Audio/Video Adapter installed in the proper position.
If you are ordering this module to use with a Protoboard, let me know and I will provide you with a free 2x10 male header with your order.
Graphic for protoboard provided by Jeff Ledger a.k.a. OldBitCollector, used by permission, Thanks Jeff!