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Evil Mad Science Meggy Jr RGB Manual

Led matrix game development kit
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Meggy Jr RGB
- LED Matrix Game Development Kit -
An open-source hardware+software project designed by
Evil Mad Scientist Laboratories
Making the World a Better Place,One Evil Mad Scientist at a Time
Support: http://www.evilmadscientist.com/forum/
Distributed by
Kit version 1.0
Evil Mad Science LLC
Manual v. 1.01
http://EvilMadScience.com/

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Summary of Contents for Evil Mad Science Meggy Jr RGB

  • Page 1 Meggy Jr RGB - LED Matrix Game Development Kit - An open-source hardware+software project designed by Evil Mad Scientist Laboratories Making the World a Better Place,One Evil Mad Scientist at a Time Support: http://www.evilmadscientist.com/forum/ Distributed by Kit version 1.0 Evil Mad Science LLC Manual v.
  • Page 2 STEP 0: Intro & Tour Meggy Jr RGB is a handheld platform for developing your own pixel-scale video games. Meggy Jr has an 8x8 LED matrix display, six comfy buttons, a noise making device, and even 8 extra LEDs for whatever you like. Meggy Jr can run on batteries or external power.
  • Page 3 All of the software that you’ll need is available online for 4. AAA batteries (3) free. You’ll need a reasonably recent vintage computer (Mac, Windows, or Linux) and internet access. (Alkaline recommended.) Get started here: http://www.evilmadscientist.com/go/meggyjr [Meggy Jr RGB]...

  • Page 4: Step 2: Bill Of Materials

    STEP 2: Bill of Materials Line Designation Value Type Circuit board Meggy Jr RGB R1, R2 Resistor, 1/4 W 100 ohm Resistor, 1/4 W 10 k Resistor, 1/6 W RB0 - RB8 620 ohm Resistor, 1/4 W Q0-Q8 2STX2220 PNP Transistor...
  • Page 5 • The solder should melt to the joint and leave a shiny wet-looking joint. If not, let cool and try again. 5. Clip off extra leads on back side, flush to the board. (But not so flush that you’re clipping the board itself.) Clip! [Meggy Jr RGB]...
  • Page 6 Then, spread the leads out slightly so that they aren’t quite so close together. (Transistors!) (Gripping them with the pliers while doing this lets you make a tight bend with only minimal stress on the device.) [Meggy Jr RGB]...
  • Page 7 Hold the rest of the pins-- tight-- with your fingers. 3. Trim the excess pin away to end up with a 3-pin header and a 6-pin header, which we’ll use in the next step. [Meggy Jr RGB]...
  • Page 8 First, figure out which way is which on the chips. The most important feature to notice on the chips is the “half-moon” indentation at one end of the chip. This is the polarity marker. (Other markings on the chips may vary.) [Meggy Jr RGB]...
  • Page 9 In particular, note that this chip is upside down with respect to the other two chips-- the label “U1” is written upside down to emphasize that point. As with the last chips, press this one flush onto the board and solder it into place. [Meggy Jr RGB]...
  • Page 10 2. Bend the leads down 90°, so that they stick straight down. (Gripping them with the pliers while bending lets you make a tight bend with only minimal stress on the device.) [Meggy Jr RGB] [10]...
  • Page 11 Again, the labels are tiny. If your eyes are very good, you might be able to make out the legend “104” on these. Note: C4 is almost underneath C3; you can bend it out a little bit for a better fit if needed. [Meggy Jr RGB] [11]...
  • Page 12 Meggy Jr or for programming through a USB-TTL cable.) Marking on the top side If you’re really sure that you need it, add it on the back side of the circuit board, underneath marked location J1. Installed on bottom side (Pin 1 is marked.) [Meggy Jr RGB] [12]...
  • Page 13 3. Use small pliers to gently break off 4. Add the other three socket strips to the LED display the same way. the two extra pins hanging off the edge. This completes the socket assembly; next, we’ll add it to the board! [Meggy Jr RGB] [13]...
  • Page 14 This is an OPTIONAL PART that is not required (but might be nice). If installed, the Meggy Jr RGB will be reset (i.e., rebooted) when you push this button. If you want it, snap it into location S1 (Reset), and solder all four pins from the back side.
  • Page 15 Your ac adapter over the two right pins to draw power from should output for 4.5 - 5 V dc, an external source like an ac adapter. regulated, center-positive, with at least 600 mA capacity. [Meggy Jr RGB] [15]...
  • Page 16 (If necessary for some reason, the caps can be removed by gently prying them off with a small flathead screwdriver.) Meggy Jr RGB is designed to be mounted and used inside a handle set (case) that protects the circuit board from your fingers, and protects your fingers from the circuit board.
  • Page 17 Use the nylon screws from the top side to help guide the lower shell into place, and secure it in place -- “Basic handles” shown; other gently-- with the nylon acorn nuts. types mount the same way. [Meggy Jr RGB] [17]...
  • Page 18 When you are ready, attach the hook side of the velcro to the battery box-- the side without the switch-- and the loop side to the circuit board. [Meggy Jr RGB] [18]...

  • Page 19: Step 17: Wrapping It Up

    Need help? If you encounter difficulty with Meggy Jr RGB in hardware, software, or elsewhere, odds are that somebody knows how to help you out. Your first stop should be the Evil Mad Scientist Laboratories forums: http://www.evilmadscientist.com/forum/...