The ArduiNIX shield is a user programmable platform for driving multiplexed Nixie tube or other high voltage displays**. The ArduiNIX is open source hardware
Welcome to the assembly portion of the site. Here we will take you step by step through the build process of your ArduiNIX kit. First, make sure you have your parts all accounted for!
Included in your driver shield kit should be the following parts. This is the most current, up to date parts list for the ArduiNIX.
- (1X) ANX_Board
- (1X) Damper Diode 1.0 Amp 400 Volt BYT01-400 511-BYT01-400 @ D1
- (1X) 100uH 1 Amp RFI Suppression Coil 434-11-101M @ L1
- (1X) 25 Volt 470 uF Capacitor 647-UVZ1E471MPD @ C2
- (1X) 350 Volt 1 uF Capacitor 647-UVR2V010MED @ C1
- (1X) 500V 5.6 pF NPO Capacitor 140-500N2-5R6D-RC @ C3
- (1X) 500V 47pF SL Capacitor 140-500S5-470K-RC @ C4
- (1X) IRF730 400V 5.5 Amp Single-Gate MOSFET 844-IRF730APBF @ Q10
- (1X) 1/4" Squ 1K 10% Single Turn Trimmer 858-25PR1KLF @ R19
- (1X) 6X6 FLAT 4.3mm BTN Tactile Switch 653-B3F-1000 @ S1
- (1X) General Purp Single NE555N Timer IC 511-NE555N @ IC1
- (5X) 1/4watt 33Kohms 5% Metal Film Resistors 71-CCF07-J-33K @ R1-R5
- (4X) 1/4watt 100Kohms 5% Metal Film Resistors 71-CCF07-J-100K @ R6-R9
- (4X) 1/4W 470K ohm 1% Metal Film Resistors 660-MF1/4DCT52R4703F @ R10-R13
- (2X) 1/4watt 1Kohms 5% Metal Film Resistors 71-CCF07-J-1K @ R14, R15
- (1X) 1/4watt 10Kohms 5% Metal Film Resistors 71-CCF07-J-10K @ R16
- (1X) 1/4watt 220Kohms 5% Metal Film Resistor 71-CCF07-J-220K @ R17
- (1X) 1/4watt 470ohms 5% Metal Film Resistor 71-CCF07-J-470 @ R18
- (4X) PNP MPSA92 Small Signal Transistor 512-MPSA92 @ Q6-Q9
- (5X) NPN MPSA42 Small Signal Transistor 512-MPSA42 @ Q1-Q5
- (2X) Nixie Driver IC - SN74141 *OR* Equivalent @ IC2, IC3
- (1X) 40P .100" Pin Strip Headers 517-6111TG Pinrails
Step 1: Lay out your parts
Step 2: 1.0 Amp 600 Volt Fast Recovery Rectifier Diode @ position D1
The diode we supply may either be a 400 or 600 volt diode. Either will work.
Use something handy to pull the diode up snug to the board, preferably so your hands are free to solder the leads in.
This is how D1 should look once it's installed correctly.
Step 3: 100uH 1A Coil @ position L1
The coil is one of the main components that allows us to take 9 volts up to 180. It can be installed either direction, so don't worry about polarity.
How nice, the diode and coil are going to be best friends.
Step 4: 25Volt 470uF Capacitor @ position C2
Make sure the negative side of C2 is not inserted into the positive hole on the board.
It should look like this when it's installed correctly.
Step 5: 350 Volt 1 uF Capacitor @ position C1
Like C2, C1 must be oriented the correct way on the board.
Step 6: 500V 5.6 pF NPO Capacitor @ position C3
Again, C3 is a component which varies from kit to kit. This capacitor controls the voltage range on your unit. The cap we supply may vary from the photo above. As we make slight modifications and improvements to the kit, this component stands to vary the most, so don't worry if your cap doesn't look exactly like this.
The current rev of this part is a 500V 5.6 pF NPO Capacitor.
Step 7: 500V 47pF SL Capacitor @ position C4
C4 may be installed either direction, polarity is not important with C3 and C4.
Step 8: IRF730 400V 5.5 Amp Single-Gate MOSFET @ position Q10
This power transistor must be installed correctly, with the metal tab aligned over the solid white stripe at position Q10 on the board.
Using a third hand to tug slightly up on the leads while soldering makes for a great installation.
Step 9: 1/4" Squ 1K 10% Single Turn Trimmer @ position R19
R19 will only insert into the board one way, the three pins on the back will align with the three holes in the board.
R19 will be soldered in here, at the edge of the board near the tall capacitors.
Step 10: 6X6 FLAT 4.3mm BTN Tactile Switch @ position S1
Howdy, S1. Welcome to the board.
Step 11: General Purp Single NE555N Timer IC @ position IC1
The timer IC, like all other ICs must be aligned properly! Take note of the notch on the IC and align it with the notch on the diagram on the board.
Make very sure that the timer IC is oriented properly. The image on the board shows which way to point the cutout, or dish that is on one end of all timer ICs.
Step 12: Test Your Resistors!
Step 13: 1/4watt 33Kohms 5% Metal Film Resistors @ positions R1 through R5
R1 - R4 are in a row, R5 is over by the Timer IC.
Step 14: 1/4watt 100Kohms 5% Metal Film Resistors @ positions R6 through R9
Step 15: 1/4W 470K ohm 1% Metal Film Resistors @ positions R10 through R13
Step 16: 1/4watt 1Kohms 5% Metal Film Resistors @ positions R14, R15
Step 20: PNP MPSA92 Small Signal Transistors @ positions Q6 through Q9
Watch the orientation on these, make sure they match the diagram. If the leads aren't bent to fit already, Bend leads like this, so they fit the holes in the board.
Installed in proper location and orientation, should look like this.
Step 21: NPN MPSA42 Small Signal Transistors @ positions Q1 through Q5
Also bend the leads on these transistors so they fit their holes on the board.
Step 22: Nixie Driver IC - SN74141 *OR* Equivalent @ positions IC2, IC3
We highly recommend socketing your driver chips, as they are the most delicate part of the ArduiNIX. These are no longer made, and are only available on eBay if you short one or burn one out. TAKE CARE with these.
Make sure the notches on the chip line up with the notches on the diagram. Again, we highly recommend socketing your driver chips, we don't include sockets in the kits to keep the costs down.
Step 23: 40P .100" Pin Strip Headers
The ArduiNIX board has a spot for connector rails between the 9V connector and the Cathode2 Connector on the bottom of the board. These may be left unconnected if you prefer to run a cable to the Arduino connections under these terminals to use those pins as inputs for setting the clock, advancing the numbers, etc.
Step 24: Anode and Cathode connectors
The ArduiNIX connects to your nixie tubes through these terminals. The cathodes connect to the numeral plates 0 through 9, and the anode terminals connect to the anode pin of your nixie tube. ALWAYS use a resistor between the anode terminal and the anode pin of your nixie tube. This is required. The value of the resister varies depending on your tubes, but 10K works well to start with.
Step 25: Check your work!
Use a 9Volt DC wallwart power supply with the ArduiNIX (Not included) Once plugged in, certain portions of the ArduiNIX will become charged with high voltage. Do not touch the anode pins, or test points, or any exposed solder points while the unit is charged.
To drive VFD Tubes in the 30 to 40 voltage range, the timing capacitors in steps 6 and 7 must be changed to higher value capacitors.
Once your unit is powered properly, and you have nixie tubes to connect, download the code, and send to the arduino! http://www.arduinix.com/Main/Downloads.htm
Thanks for looking!
Later, we'll cover assembling the tube boards.