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Sol-Expert 76700, Quick Start Manual

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Sol-Expert 76700 Quick Start Manual Download Page 12

I

The buttons are soldered onto the on 
the 

back.

 Therefore, turn the PCB over 

and only then solder on the buttons.

Solder on the buttons.

J

Now come the LEDs.

Solder on one LED after the other. It is essential that you observe the polarity 
of the LED. The longer leg is always PLUS "+" and has to be in the soldering 
point marked with "+". Also make sure that each 

 (see 

LED lies flat on the PCB

drawing below). This is very important to ensure that the wooden front can be 
fitted accurately later. It makes sense to solder the LEDs 1 / 4 / 14 / 11 first. 
Do not forget to trim the wires.

You will now need the following parts:

You will now need the following parts:

3 x 

SW2-SW4

23 x 

LED1-23

ü

Solder the LEDs flat on the PCB:

Solder and 

trim wires

Insert the LED 

lying flat

Bend wires 

bend outwards

-

+

TIP:

As the soldering legs of the 
buttons are thicker, you can 
increase the soldering 
temperature to 400°.

Summary of Contents for 76700

Page 1: ...T group group 10 10 Keep the address of the company Not suitable for children under 3 years Contains small parts VARIOSAND The extraordinary hourglass soldering kit MADE IN EUROPE Item No 76700 1 minute to 109 minutes Can be set from ...

Page 2: ...tage This poses an absolute danger to life Keep these instructions for future reference They contain important information Always use a soldering mat when soldering It prevents parts and the PCB from slipping The soldering iron the solder and the soldered parts become very hot Be very careful We recommend using a soldering iron holder to set the soldering iron down safely during use SAFETY NOTES F...

Page 3: ...Once everything has been completely assembled you ll have a wonderful programmable hourglass This intelligent hourglass is powered by a power bank or directly from a USB port such as a mobile phone charger This eliminates the need for a costly extra battery This is good for the environment and helps to make you more of a climate activist With VARIOSAND you can also store 3 separate times that you ...

Page 4: ...nF 10V 1 Processor IC1 ATMEGA328 2 Capacitor C2 C3 22 pF 10V 1 Capacitor C1 100 nF 10V 1 Quartz Q1 16MHz 12 Resistor R5 R16 330 ohms 2 Resistor R2 R4 1 5K ohms 4 Resistor R19 R22 10K ohms 23 3 mm LED LED1 22 yellow 2 Resistor R1 R3 4 7K ohms 2 Resistor R17 R18 180 ohms 1 PCB 76700 Qty Part Value Designation 103 104 22 BC557B 10 uF 1 Piezo J5 12M 1 Encoder SW1 Encoder 1 USB connecting cable 40 cm 1...

Page 5: ...rt all parts This will make it easier for you to later identify the individual parts you will need during the steps And it doesn t hurt to tidy up your work space so you can quickly find all parts Preparation orange orange black black brown 330 ohms black black brown grey brown 180 ohms black yellow violet rot brown 4 7K ohms black brown black red brown 10K ohms green black brown brown brown 1 5K ...

Page 6: ...dering points the conntecting wires must be bent exactly in the correct location To make this easier we have designed a simple yet functional bending tool Simply place the resistors in the notch and bend the leads down straight along the wooden edge downwards into the notch The part will now fit perfectly between the soldering points Insert resistor Bend one leg down Bend the other leg down 12 x 2...

Page 7: ...n the board and solder them Make sure that each component is as flat as possible on the board before soldering see drawing below You will now need these parts 4 x 4 x Trim here to 2 mm length Part wire Soldering point Part PCB 3 B 10K ohms 10K ohms R19 R22 R19 R22 3 C 1 x PCB PCB So that the component does not fall out again and lies flat on the circuit board you can you can bend the wires outward...

Page 8: ... ohms 180 ohms 2 x 2 x 2 x 12 x R2 R4 R1 R3 R5 R16 R17 R18 1 5K ohms 330 ohms 180 ohms 4 7K ohms 4 7K ohms And again trim the protruding wires After soldering cut off the protruding wires on the back shorten to approx 2 mm with the side cutter Trim here to 2 mm length Part wire Soldering point Part PCB ...

Page 9: ...l now need the following parts 2 x 1 x C2 C3 Q1 22 22 22 22 pF 10V 16 MHz and then trim the protruding wires After soldering cut off the protruding wires on the back shorten to approx 2 mm with the side cutter Trim here to 2 mm length Part wire Soldering point Part PCB ...

Page 10: ... to its alignment The processor has a notch rounding which must be oriented to the left when you insert it In the magnified image below you can see the notch very well Image 2 Now we come to the heart of the circuit the processor When you have plugged in the IC turn the board over and check whether all 28 legs are visible in the soldering points image 3 1 x IC1 You can move the legs of the process...

Page 11: ...g marked minus must be pushed into the correct soldering point Then solder the capacitor in place and trim the soldering wires to 2 mm 2 x 1 x T1 T2 10 uF 10V BC557B BC557B Transistor view from above fflat side fflat side rounded side rounded side Transistor side view bend middle leg backwards The legs of the transistors are very close together Therefore please solder particularly carefully so tha...

Page 12: ...sure that each see LED lies flat on the PCB drawing below This is very important to ensure that the wooden front can be fitted accurately later It makes sense to solder the LEDs 1 4 14 11 first Do not forget to trim the wires You will now need the following parts You will now need the following parts 3 x SW2 SW4 23 x LED1 23 ü Solder the LEDs flat on the PCB Solder and trim wires Insert the LED ly...

Page 13: ... cable through soldering point and solder from the other side The red cable to and the pink or white cable to First thread both individual cables red and pink white together approx Solder the USB connection cable Red or Red wire You will now need the following parts 1 x 1 x SW1 SW1 J1 J1 It is essential to observe the wire colour white wire approx 1 5 cm red arrow Cable length TiP When soldering t...

Page 14: ...g wires have been shortened to 2 mm Mount the front cover Apply a little wood glue to the areas marked in red and then then press the hourglass onto the the base plate Then wait approx 10 minutes until the glue has glue has dried Glue the hourglass to the base plate Gluing surface 10 minutes Pay attention to the alignment of the base plate ü ...

Page 15: ... image 2 slide it over the cable and press it into the base Allow to dry for 5 minutes and then glue in the second fixation image 3 Now let the glue allow to dry for approx 10 minutes Mount the cable strain relief Apply glue here You will now need the following parts Apply glue here 1 x 2 x Cable tie 5 minutes 10 minutes Cable tie between the wooden fixings 1 5 cm Cable ties USB connecting cable I...

Page 16: ... on the processor for short circuits Re solder the solder joints of the malfunctioning LED with some solder Check the solder joints of the resistors Is the LED soldered the right way around Is the on the negative If necessary desolder and turn 180 degrees Check and re solder all solder joints on the encoder Check the piezo buzzer for polarity and re solder the soldered joints Preset time cannot be...

Page 17: ...10 minutes Both numbers together highlighted in green in the example below indicate the total time set In the following you will see 3 examples that illustrate how you can read the time If the button on the rotary encoder is now held down for approx 2 seconds the middle LED starts to flash briefly Then the lower right LED lights up If the rotary encoder is now turned clockwise more and more LEDs w...

Page 18: ...y pressing any button or switch VARIOSAND can store a total of three freely selectable times which can then be retrieved simply by pressing a button The memory buttons And this is how it works Programme the desired time Use the rotary encoder to set the desired time and then press one of the three buttons under which you want to save the time The LEDs start flashing briefly and the desired time is...

Page 19: ...ome and you no longer need VARIOSAND unplug it and keep it safe and dry for the next time Retrieve desired time The set time is accessed by pressing the corresponding button The programme starts automatically Briefly pressing the rotary encoder button interrupts the programme sequence and VARIOSAND automatically returns to the switch on state ...

Page 20: ... and changes reserved July 2021 Christian Repky Click here for the instructions Hier geht es zur Anleitung Cliquez ici pour les instructions Klik hier voor de instructies 4 037373 767007 Shows the time digitally Item no 76334 Keep your brain fit Item no 79300 Other great SOL EXPERT group soldering kits Binary Clock soldering kit TrainYourBrain soldering kit ...

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