Bastl Instruments GRANDPA Assembly Download Page 4

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By now your board should look like this:

Next place and solder the sockets. Make sure that the notch is in the

same direction

as printed on the

circuit board. The ATMEGA and MCP4921 circuit board prints have a little

* orientation mark

instead

of a notch. Both should be facing downwards.

Then add the capacitors, there are seven 100n capacitors (marked 104). They might be in ceramic or

polyester film package, don't worry they are not polarized.

Now move on to the protective fuse. It looks quite similar to a ceramic capacitor but is placed in the blank

rectangular marking on the board.

Summary of Contents for GRANDPA

Page 1: ...re that you understand all the steps if you are having any troubles don t hesitate to seek help at the forum We suggest that you work in a clean and a well lit environment to avoid accidents or losing...

Page 2: ...1 x ribbon cable 7 x 100nF capacitors 1 x 7 segment 2 x pot knob 2 x 10uF capacitors 2 x 3mm diffused green LED 1 x micro SD slot 1 x 1N4007 diode 1 x 16MHz resonator 1 x 11mm nut nut spacer 4 x jack...

Page 3: ...holder board Bottom board Lets start with the bottom board with the shortest and smallest parts Take a strip of resistors and look up the values printed on the circuit boards Start with the 100K and 1...

Page 4: ...oard prints have a little orientation mark instead of a notch Both should be facing downwards Then add the capacitors there are seven 100n capacitors marked 104 They might be in ceramic or polyester f...

Page 5: ...er the board to hold it level Also first solder in just one of the pins then take the board in your hand and re heat that pin while pressing down on the header to align it be careful though you don t...

Page 6: ...that it lies flat on the circuit board Top board Now populate the top Again start with the remaining resistors and solder them in Then solder the IC socket and the display Make sure that the notch on...

Page 7: ...protective film facing upwards You might have to file the panel opening a little bit if you are not able to fit it in Make sure it is sitting flat and push it all the way in until it s level with the...

Page 8: ...nel so take the standoff and place it in the opening Check that all the components came through and then screw the wooden front panel with the second hex screw Also secure the jacks to the panel with...

Page 9: ...board check that the holder sits flat on the board Carefully solder the rest of the leads by placing the soldering iron perpendicular to the edge of the lead and applying solder to the pad Make sure...

Page 10: ...to the tip holes on the board also insert them in the bottom board and screw both boards back in place The SD card holder should be well aligned with the opening on the front panel but also sit flat o...

Page 11: ...D card with samples and you are ready to enjoy your new module Before you connect anything make sure that your system is disconnected from power Also double check the polarity of the ribbon cable the...