LED Display DIY Calculator Making Electronic Kit MCU Soldering Practice Project
1. Dual power supply mode: support 3V button battery or USB interface 5V power supply, more flexible and convenient to use.
2. practical functions: with basic arithmetic operations and color ring resistance value conversion, suitable for learning and work
3. Easy to assemble design: PCB board has clear markings, welding time 1-2 hours, suitable for beginners to practice
4. Transparent acrylic shell: beautiful and elegant, the internal circuit at a glance, enhance the desktop decorative effect
5. Automatic hibernation energy saving: long time no operation automatically enter the hibernation mode, prolong the battery service life
Product name: calculator kit
Supply voltage: 3V button battery or USB interface 5V power supply
Product size: 90*128*19mm
Circuit size: 78*112mm
Power on the default sleep mode, press the “C” key to enter the working mode, no operation for a long time automatically enter the sleep mode, calculation errors or over the range of the display “E”, in the case of two operands are 0, press the “=” color ring resistance calculation. Press “=” in case both operands are 0, the color ring resistor calculation mode will automatically identify the 4-color ring or 5-color ring.
The first digit of the first position indicates the unit of “Ω”, the middle one indicates the unit of “kΩ”, and the bottom one indicates the unit of “MΩ”.
1. Addition, subtraction, multiplication, division operation of negative numbers, the function of continuous calculation over the calculation range will be reported as an error, the color ring resistor resistance value conversion input the number of colors to automatically identify the 4-color ring or 5-color ring.
2. Power cord power supply and button battery can not be powered at the same time, will damage the button battery.
1 x Calculator kit
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.
2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances.
3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase.
2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
3. Please include your eBay ID and item number with any email requests.
1. If you have any questions, please feel free to email our service specialists.
2.Just contact us using the " Ask the seller a question" link on eBay.
3.Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
1. Dual power supply mode: support 3V button battery or USB interface 5V power supply, more flexible and convenient to use.
2. practical functions: with basic arithmetic operations and color ring resistance value conversion, suitable for learning and work
3. Easy to assemble design: PCB board has clear markings, welding time 1-2 hours, suitable for beginners to practice
4. Transparent acrylic shell: beautiful and elegant, the internal circuit at a glance, enhance the desktop decorative effect
5. Automatic hibernation energy saving: long time no operation automatically enter the hibernation mode, prolong the battery service life
Product name: calculator kit
Supply voltage: 3V button battery or USB interface 5V power supply
Product size: 90*128*19mm
Circuit size: 78*112mm
Power on the default sleep mode, press the “C” key to enter the working mode, no operation for a long time automatically enter the sleep mode, calculation errors or over the range of the display “E”, in the case of two operands are 0, press the “=” color ring resistance calculation. Press “=” in case both operands are 0, the color ring resistor calculation mode will automatically identify the 4-color ring or 5-color ring.
The first digit of the first position indicates the unit of “Ω”, the middle one indicates the unit of “kΩ”, and the bottom one indicates the unit of “MΩ”.
1. Addition, subtraction, multiplication, division operation of negative numbers, the function of continuous calculation over the calculation range will be reported as an error, the color ring resistor resistance value conversion input the number of colors to automatically identify the 4-color ring or 5-color ring.
2. Power cord power supply and button battery can not be powered at the same time, will damage the button battery.
1 x Calculator kit
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.
2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances.
3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase.
2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
3. Please include your eBay ID and item number with any email requests.
1. If you have any questions, please feel free to email our service specialists.
2.Just contact us using the " Ask the seller a question" link on eBay.
3.Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
Am 03.04.2026 hat der Verkäufer die folgenden Angaben hinzugefügt: