Sol-Expert VARIOSAND Bedienungsanleitung
SOL-EXPERT
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group
SOL-EXPERT
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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:
Generally: Please return electronic parts to certified disposal companies after use. These will ensure the parts are disposed of in
compliance with the law. This is good for the environment and your part in actively protecting it.
ENVIRONMENTAL NOTES:
This kit is only intended to be USB powered.
Never connect the kit to 230 V mains voltage! 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:
For children and youngsters we recommend:
Assembly and soldering should be supervised by an adult with soldering skills!
!
Important notes!
!
What is special about this hourglass is that a different time ("amount of sand" between 1 - 109 minutes) can be selected on each
occasion. For instance, you can set VARIOSAND to 5 minutes for a soft-boiled egg or 10 minutes for a hard-boiled egg. When the time
has expired, the "sand" has visually trickled down from the top to the bottom, the beeper sounds to tell you the egg is ready!
The VARIOSAND circuit board kit is ideally suited for newcomers to soldering, all budding electronics engineers, hobby technicians and
anyone who enjoys working with a soldering iron or soldering station. More than 60 parts are soldered on the "VARIOSAND" board,
including an already programmed microprocessor. 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 can then simply retrieve at the touch of a button. It might look something
like this: On button "1" you store 15 minutes for the "crispy pizza" and on button "2" 4 minutes for "perfect tea-brewing time". Of course,
you can decide for yourself which times you want to save. By the way, you can paint, varnish or decorate the wooden front or customise
it as you wish. Let your imagination take over and turn VARIOSAND into a real eye-catcher.
The VARIOSAND soldering kit - the extraordinary hourglass
Parts list Check the parts:
You will also need:
Soldering iron, solder, side cutters, tweezers, powerbank (USB),
possibly PCB assistant (an extra hand)
VARIOSAND - The extraordinary hourglass
1 Capacitor (C6) 10 uF/10V
2 Transistor (T1+T2) BC557B
3 Push buttons (SW2-SW4) 3301
2 Capacitor (C4+C5) 10 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 Set of wooden parts 4 parts
1 Bending aid for resistors
1 Cable tie
1 Wood glue
ASSEMBLY INSTRUCTIONS
Set out your tools and switch on your soldering iron.
When using an adjustable soldering station/iron, we recommend a
soldering temperature of about 320 - 340 degrees and a soldering tip
about 2-3 mm wide.
Everything OK? Let's get started!
Set out and sort 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 ohms
Tips from a pro
on how to solder
properly (QR):
Resistor colour code:
)
3
APrepare resistors with the bending tool.
The connecting wires of the two somewhat larger resistors (180 Ohms) can be bent down directly on their
bodies. Then they will fit perfectly between the soldering points.
In order for the small resistors R1-R16 and R19-R22 to fit properly between the soldering 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 x
4 x
2 x
2 x
Resistors
to bend:
And this is how it is done:
Resistor before: Bent to completion:
ü
Shorten any protruding wires.
Now the first resistors are soldered
onto the PCB
After soldering, cut off the protruding
wires on the back, shorten to approx.
2 mm with the side cutter.
Place the PCB in front of you so that you can
read the resistor values printed in white. Then
place the 4 resistors individually one after the
other on 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 outwards slightly. Then solder and shorten wires
to 2 mm (see point C)
Insert part
Solder component flat on the PCB
Bend wires
outwards
here
Now solder the remaining resistors one by one.
DYou will now need these parts:
1.5K ohms
4.7K ohms
330 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
ENow solder on the two capacitors and
afterwards the quartz...
You will 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
TIPP 1- 3 F
You will now
need the
following part:
If no leg is visible in a soldering point, pull the IC out again, bend the leg carefully and plug the processor back in. Check again
and then solder.
To make it easier for the processor to slide between the soldering points, you can bend all the legs inwards a little. (Image 1)
When plugging in the processor, you must pay attention 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
processor inwards. Then the
IC slides better into the
soldering points!
Notch
(rounding)
at this point
1
2
3
Image 1 Image 2 VERY VERY IMPORTANT! Image 3
Are all 28 feet visible?
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