Last update: 9. 3. 2016 little nerd v1.1 assembly guide bastlinstruments.Com introduction this guide is for building little nerd module from bastl instruments. It is good to have basic soldering skills and to be able to identify electronic components before starting this kit. However if you have ...
The little nerd module consists of three boards. All the parts comes in four bags separated for bottom board, connector board, pots board and assembly parts. See bill of materials ( bom ) for detailed list. Before starting this kit, prepare the following tools : soldering iron (1520w) multimeter f...
Connector board let’s start with the connector board pcb. Before you start soldering, take your time and find all the resistors values using a multimeter (or you can check the color codes if you are seasoned enough). 2 now insert and solder 21 resistors (7x 10k, 14x 1k). Then snip the leads as clos...
Now take the front panel and lower it down on the connector board. Hold it together and mount it with two jack nuts on the first and the last jack connector (you do not have to tighten them too much as you may damage the wooden panel). Then turn around this unit facing it with pcb upwards. Now push...
The last thing to solder is to close two solder jumpers indicated by “in” under the first and fifth jack connector. This normalizes the input to ground when nothing is plugged in. See the image below. Unmount the connector board from the panel. As you can see some male pinheaders left. You will us...
Now you want one 1x5 and one 1x8 male pinheader. If it is necessary cut the required length with your flush cutters. Then put them from the other side and solder them. be careful to solder the pinheaders straight ! You may first solder the middle pin, then take the board in your hand and rehea...
Push the led leads to fit it’s head on panel and solder it. You can keep the board on panel. Bottom board now let’s make the bottom board. Again start with the resistors . There are five of them (3x 10k, 2x 1m) and they are pretty signed on the board. After that solder the 1n4007 diode. be caref...
Then solder two ic sockets (1x 14 pin, 1x 28 pin). make sure that the notch on the socket matches the print on the board . Now let’s do some other parts. There are three 100nf capacitors (marked 104), one protective fuse (it looks quite similar to a ceramic capacitor but is placed in the “ptc” re...
Now insert two transistors (2n3906) . Again, watch out for orientation! Flat side of transistors must match the outline drawn on the pcb. You also want to push them closer to the pcb. Next don’t forget to place the ics in the sockets (1x atmega, 1x 74hc595). there is a notch on each ic that shou...
Mounting of the boards you are almost done now. You have to finally connect all the boards together. Take the bottom board and connector board first. prepare two 3 pin headers (male and female), two 2x3 pin headers (male and female) and pair them together as shown on the picture. The female headers...
Final assembly congratulations! You have made it through, now just secure the jacks to the panel with the washers and the nuts (keep in mind not to tighten the jack nuts too much as you may damage the panel!), install two jumpers and a screw with the small nut on the voltage regulator (see the pi...
Before you connect anything, make sure that your system is disconnected from power. Also double check the polarity of the ribbon cable, the red cable should match the 12v rail both on the module and on the bus board! Troubleshooting this may be the common problems and solutions: inputs don’t work a...
