AVTEDU620 LED Heart Beat Instruction Manual
- June 8, 2024
- AVT
Table of Contents
AVTEDU620 LED Heart Beat
LED Heart Beat Educational Soldering Kit
LED Heart Beat is a
perfect gift for Valentine’s Day, birthdays, Mother’s Day, etc., but it would
also make a wonderful surprise even without occasion. The effect, based on 12
red LED diodes arranged in a heart-shaped pattern, signifies the beating of a
heart. The set uses three light modes, the effects of which can be sped up by
holding the temperature sensor (thermistor), all thanks to the built-in
microcontroller. To reduce the waste of energy, the set has a power switch
soldered onto the circuit board.
Specifications
- 12 red LED diodes in a heart-shaped pattern
- temperature sensor serving as a heartbeat’s “accelerator”
- 3 heartbeat light effects
- power switch
- circuit board dimensions: 74×67mm
- power supply: 4,5V [3×AA] – batteries not included
Suggested order of assembly
- R8: ………………………..thermistor 10kΩ
- R1-R6: ………………….100Ω (brown-black-brown-gold)
- R7 : ………………………..4,7kΩ (yellow-violet-red-gold)
- R9: ………………………..10kΩ (brown-black-orange-gold)
- D1 : ………………………..1N4007 !
- C1: ………………………..100uF !
- T1: …………………………2N7000 !
- LED1-LED12 : ……….3mm red LED diode
- S1 : …………………………microswitch
- US1 : ………………………ATtiny13 + IC socket!
- SW1: …………………….switch
battery connector: red-positive Ĺ, black-negative ⊝
Begin by soldering the elements onto the circuit board in order from smallest to largest. When assembling the elements marked with “!” pay attention to their polarity and placing of the notch.You may find the frames with symbols of these elements on the circuit board, as well as photos of the assembled kit helpful.
Assembly instructions
- Touch the tip of the soldering iron to the end of the element near the soldering field
- Next, apply tin solder
- After the cone forms, remove tin solder first, and then the soldering iron
- The whole process should take approx. 2-3 seconds.
The cleanness of the soldered surfaces, right amount of flux in the solder,
adequately high temperature (320-360°C), and sufficient amount of solder are
necessary to complete a correct bonding. Too much tin solder can result in
forming a ball instead of a cone or joining of two adjacent soldering points.
Inadequate temperature, amount of tin solder or impurities can lead to so
called “cold solder joints, i.e. solder and the flux can’t moisten the two
surfaces and the resulting solder point is fragile and in time will oxidize,
break, and stop working.
Thank you for purchasing AVT product. Please take your time to read carefully
the important information below concering use of this product.
NOTE: Educational Electronics Kits are intended for educational and demonstration purposes only. They are not intended for use in commercial applications. If they are used in such applications the purchaser assumes all responsibility for ensuring compliance with all local laws. In addition, they cannot be used as a part of life support systems, or systems that for use as or as a part of life support systems, or systems that might create a hazardous situation of any kind.
- Battery or wall-adaptor are safe devices. They do not require special attention unless main voltage is connected to an output e.g. a relay.
- If the kit is used to switch currents greater than 24V it is necessary to have the installation and performed by a trained professional authorized for such work. The kit may only be used in such application if it was installed in a safe to touch enclosure.
- Never exceed the limits or ratings listed in the ‘Specifications’ section at the this user guide.
- If the kit is used in schools or educational facilities or similar institutions the operation must be supervised by trained and authorized staff.
- The product itself and all parts thereof (including packing material) are not suitable toys for childern! (choking hazard, risk of electric shock, …)
Failures in modern electronic component are very rare as 95% of non-working
kits are due to poor soldering or components placed in the wrong location or
orientation so please check your work carefully.
http://avtkits.com/
AVT SPV reserves the right to make changes without prior notice. Assembly and
connection of the device not in accordance with the instructions, unauthorized
modification of components and any structural modifications may cause damage
to the device and endanger the person using it. In this case, the manufacturer
and its authorized representatives shall not be liable for any damages arising
directly or indirectly from the use or malfunction of the product.
References
Read User Manual Online (PDF format)
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