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Old Apr 23, 2010, 09:22 AM
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Edit: 18/5-2010. I misplaced comma for value of C1 on Gyro board. Correct value is 4.7 uF. I have edited recap Doc as well. Changes only apply to gyro cap C1 value and size.

Edit: 10/5-2010 - recap on building and programming added. New gyro boards added.

If U downloaded old gyro boards, you can trash them - I had swapped pin 3 and 4 on gyro board. I built and tested new version and it works!

I have removed the old files and put up the new ones - there is nothing wrong ith the old PCB files but I made a few changes and tidyied it up...

Printing and wieving of the .lay-files can be done with sprint layouts free viewer tool. This way you can print to fit your need.

I have provided gerber and excellon-files as well for those wanting to import design into Eagle with the Eagle power tools.

Design notes:

I tried to make board as versatile as possible. But C4 and C9 have to be tantalum to fit! You can now use 10 mm potis and plastic film caps for C5, C4 and C8. Watch the sizes if you use plastic film caps - they often have very large bodies.

Except for C7 Tantalum is the recommended choice for all caps and especially C9 has to be tantalum according to Kapteins design. C7 is a radial Electrolyte....

All tracks are 0.5 mm and at least 0.5 mm apart. This makes it pretty easy to make with tonertransfer technique....all Holes are set to minimum size 0.6 mm -. you can then drill out to larger size if needed - mounting holes can be up to 3 mm.

IC3 is designed to take a TO220 package, which means that the smaller TO92 package will also fit with some bending of the legs.

R1, R2 and R3 are standing up. LED is designed for 5 mm type. I stacked headers for all six motors in same direction. Potis are uo to 10 mm base with 2.54 *5.08 footprint

I designed so that you can use HK401B or other solution. If HK401b is used then connect signals to Y,P,R and the 3 GND and VVC wires to corresponding pads (vcc 1-3 and gnd in upper right corner of PCB)

I you plan to use the provided gyrostar PCB, then you can omit R1, R2 and R3 (they are on gyro PCB), and connect gyro boards directly to Y,P,R, G and VCC.

V 4.1 part list:

IC1: Atmega48/88/168/328 (28-pin)
IC3: LM317LZ (TO92 or TO220)
DIL/DIP 28 -300 “Narrow style” IC socket for Atmega

R1: 100 Ohm
R2: 100 Ohm
R3: 100 Ohm
R4: 4.7 Ohm
R5: 10 KOhm trim potmeter (up to 10 mm square with 2.54*5.08 pinout footprint)
R6: 10 KOhm trim potmeter
R7: 680 Ohm
R8: 10 KOhm trim potmeter
R9: 220 Ohm
R10: 68 Ohm (was 39 ohm)
R11: 4.7Kohm - 1206 SMD case. (only for twoside version)

C1: 2.2 or 47 uF tantalum
C2: 2.2 or 47 uF tantalum
C3: 2.2 or 47 uF tantalum
C4: 2.2 or 47 uF tantalum
C5: 0.68 uF tantalum
C6: 0.68 uF tantalum
C7: 100 uF or 47 uF electrolyte or Tantalum
C8: 0.68 uF tantalum
C9: 2.2 uF tantalum or 47 uF Tantalum

Components for Gyro PCB is :

IC1: Murata Gyrostar ENC-03R
R1: 100 Ohm - 1206 SMD
R2: 6.8 KOhm – 1206 SMD
C1: 4.7 uF Tantalum – SMD C-case
C2: 47 uF Tantalum – SMD D-case

You can probably use smaller B-case SMD Caps for C1 and C1 - sizes are max size that will fit.
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Last edited by JussiH; Jun 22, 2010 at 09:13 AM. Reason: Design revised!
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