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External power supply

The clock requires an external power supply of between 9V and 12V DC, with a “centre 
positive“ 2.1mm x 5.5mm barrel jack, able to supply 1A.

It is not advised to use more than 12V. The absolute maximum permissible is 16V DC. Higher 
voltages than this will surely damage the clock.

Board Versions

This manual covers versions

•

MNC6 V1.0

•

MNC6 V1.2

While there might be detail differences in the layout and silk screen of the board, you can 
follow the same instructions. The differences are only minor and do not change the method of 
construction.

Some V1.2 boards will come with the barrel jack and WiFi header already attached, this is to 
allow us to fully test the boards before delivery.

4

Содержание MNC6

Страница 1: ...MNC6 Arduino Interchangeable Nixie Clock Rev1 Rev1 2 Construction Manual MNC6ConstructionManualRev1...

Страница 2: ...al components 6 Construction 7 Preparation 7 Input Power 8 Tube holder sockets 9 Place the 6 sockets in the marked locations and solder them 9 Tube holder preparation Tubes 10 Tube holder preparation...

Страница 3: ...k as you expect please carefully look at the tests in the construction steps and the troubleshooting tips At the end of the manual there is a troubleshooting section which goes through some of the com...

Страница 4: ...ltages than this will surely damage the clock Board Versions This manual covers versions MNC6 V1 0 MNC6 V1 2 While there might be detail differences in the layout and silk screen of the board you can...

Страница 5: ...e see the user manual for full details of what the switch does FRONT PANEL These are the controls that go on the front panel The input button and the Light Dependent Resistor to detect ambient light G...

Страница 6: ...them on this output SND This is an open collector output to drive a Piezo sounder V Auxiliary output supplying the input voltage used for driving the Piezo sounder PIR An additional input for the PIR...

Страница 7: ...iron some thin 1mm ideally 0 6mm 0 8mm solder and electronic side cutters There are no special or difficult to solder components needing assembly You should leave an hour for construction and testing...

Страница 8: ...wer supply Hook up the power and check the 5V line Check that the voltage between the GND test point and the 5V test point It should read a voltage of between 4 9V and 5 1V Test Step 170V power supply...

Страница 9: ...please invert the components referred to in this section and the section about the tube holders Place the 6 sockets in the marked locations and solder them At the end of this step your board should lo...

Страница 10: ...ll too hard you can easily damage the tube If you have varnish on the tube leads you can soften this with a hair dryer or heat gun on a low setting Often used tubes have the two decimal point leads re...

Страница 11: ...again that the tube is upright compared to the board If it is correct then you can start to solder other leads checking at each lead you solder that the tube is still aligned correctly Once you have...

Страница 12: ...n pin 1 by 0 5mm Pin 4 is shorter than pin3 by 0 5mm and so on Pin12 is shorter than pin 3 by 5mm at the end This means that you can thread the leads into the holes more easily To make the tube stand...

Страница 13: ...n the board but you can also reverse the connectors and put the header pins on the board if you prefer We prefer to put the sockets on the board because this means that no high voltages are exposed wh...

Страница 14: ...ger that the other two The longer leads go into the two holes with tiny round o markings next to them pins 3 and 4 Type 2 APA106 LEDs have a package where one lead is longer than the others This is pi...

Страница 15: ...aces on the board Each pair is in series and so will not work until both are in place For best results mount one higher than the other Put the tubes in so you can tell how the end result will look At...

Страница 16: ...ith the board SV2 6 pin header BTN1 2 Momentary push button LDR LDR PIR PIR detector optional The LDR should be mounted in such a way that the flat face of the LDR is exposed to the ambient light This...

Страница 17: ...P 01 module needs to be installed with the long side over the DS3231 chip If you install it the wrong way round it will be destroyed Please refer to the picture Warning Double check the orientation lo...

Страница 18: ...nt light your LDR does not appear to be working Check the connections to the LDR If the LDR is correct perform a factory reset to make sure that no strange values have been left in the EEPROM Check th...

Страница 19: ...USBASP programmer These are easily and cheaply available from many sources You can solder a 2x3 header into the space provided and then plug the programmer in You will need a 10 pin to 6 pin adapter...

Страница 20: ...Revisions V0001 23Jan2021 Initial version V0002 4Aug2021 Add store links for programmer add PIR info 20...

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