LM3914 Battery Capacity indicator Module LED Power Level Tester Display Board
$8.73
Color. Red / Color. Blue / Color. Green /
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Features
– This is a DIY kits,need buyer to assemble it.
– Power display is to take some voltage, perform simulations show the percentage of segments, such as 3.7V lithium battery, take the lower voltage 3V, the upper limit of 4.2V, 4.2-3 = 1.2V, the voltage difference between the lower limit of 1.2V, is the battery Analog power up
– LM3914 can accurately detect an analog voltage, and 10 LED display, display dot mode LED is lit 10 one, or in a stripe pattern individually lit LED
– Display Description:Displays the battery voltage between the lower limit of 10 files showed that representatives of each of the lights 10% charge displays, on behalf of 10 lights display charge 0% -100% range; you can also change the single light display, is displayed only a light, more power, single-light power 4mA, all bright 42mA.
– Suitable for lithium batteries, lead-acid batteries and other power batteries need to be displayed
– Power adjustable display range for the battery discharge curve of a scientific setting, direct support:single lithium 1S (4.2V) ~ 4S (16.8V), lead acid 6V ~ 12V, NiMH 3.6V ~ 18V, nickel-cadmium batteries 3.6V ~ 18V
Parameter
Power:bar display full brightness 42ma, single light shows 4ma
Measuring range:the battery inside the common 2.4-20v
Color:red, green, blue,
Display:Multi-light bar display or a single light dot display
pcb board size:45 x 14 mm
Display Mode A / P:full brightness linear / single lamp lattice mode switch, the default is a linear model, the board set aside a switch pad, even with soldering pads can be turned into full light linear mode, no welding is the point like single light display
A variety of high and low voltage battery display range adjustment
1. Lithium battery
After the completion of a single lithium battery discharge voltage is 3V, when fully charged 4.2V;
1S correspond to 3V (first light) to 4.2V (tenth lights);
2S corresponds to 6V (first light) to 8.4V (tenth lights);
3S correspond to 9V (first light) to 12.6V (tenth lights);
4S correspond to 12V (first light) to 16.8V (tenth lights);
Other series voltage and so on.
2. Lead Acid Batteries
6V or 12V lead-acid battery is generally
6V corresponds to 4.8V (first red light) to 6.75V (tenth lights);
12V corresponds to 9.6V (first red light) to 13.5V (tenth lights);
The module according to the above standard battery discharge range design, can accurately reflect the battery, so that users can readily observe the status of the battery.
Adjustment methods
Equipment needed:an adjustable power supply, precision accuracy of the decisions of the panel display. Watches word screwdriver.
Case in single 3.7V lithium, 3V is less low-end power, 4.2V for the full power of high-end.
1. the adjustable power supply voltage to the desired voltage display high 4.2v, connect this board, this time there are two results:one is not bright, one is all bright or light a few. This time slow adjustment plate 503 (50k) potentiometer until the LED strip just lit up the whole. Several light does not shine or counterclockwise to adjust, when full light clockwise.
2. the adjustable power supply voltage to the low end of the desired 3V. Adjustment board 502 (5K) potentiometer to just light a LED, does not light clockwise adjustment, several or all bright light counterclockwise.
3. patiently repeating the first step two. Usually 2 times to adjust to the desired display range.
Note
To adjust their voltage, according to the method of adjusting the order, to emphasize high-end, then adjust the low end.Red then positive, then negative black, must not be reversed, this module is the maximum limit voltage DC 20V, please use anti-static welding or soldering station pull electric heat welding.
Package Included
1 x LM3914 Battery Capacity Tester Display Board
Weight | 0.05 kg |
---|
Customers Also Viewed
500pcs 0805 (2012) SMD White LED Chip Surface Mount SMT Beads Ultra Bright Light Emitting Diode LED Lamp Electronics Components
$26.89Electronic Accessories & SuppliesAdd to cartSize ConversionInchesCentimetersPlease according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.DescriptionQuantity:500 pieces Size:2.0 x 1.2 (mm) / 0.08 x 0.05 (inch)Emitting Color:White (6000K-9000K)Luminous Intensity:180-210mcdViewing Angle:120 DegreeForward Voltage / Current:3V-3.2V | 20mAPolarity:Refer to the Arrow on the Reverse SidePackage included500 x 0805 (2012) …
5pcs AC 100-240V to DC 12V 5A 60W Switching Power Supply Module Driver Adapter LED Strip Light
$52.97Power Supply ModuleAdd to cartFeatures1. Good anti-interference performance and high reliability.2. Low operating temperature and long service life.3. Wide input voltage range, (100-240V) in line with global usage standards.4. Good insulation performance and high electric strength.5. Full load high temperature burning machine, 100% aging test.SpecificationsModel:HS-60-12DC output voltage:12VOutput voltage tolerance:±1%Rated output current:5AOutput current range:0 – 5ARipple and noise:100mVp-pLine stability:±0.5%Load stability:±0.5%DC …
4Pcs 5mm Reusable Clear Bent Glass Drinking Straws Water Juice Straws with Cleaning Brush
$22.26Bottles & JarsAdd to cartSpecificationColor:ClearMaterial:High Borosilicate GlassTube Mouth Shape:RoundTemperature Resistance:-20~450℃Total Length:21.5cm / 8.46inchInner Diameter:0.5cmFeatures– Non-toxic environmentally friendly green borosilicate heat-resistant material, safe to use, not stain, will not fade.– Widely used, can drink water, milk, juice, coffee, coke, soda, etc.– Could put it into the microwave for sterilization.Package Included4 x Glass Drinking Straws1 x Cleaning Brush
5Pcs Car Window Sun Visor Screen Car Side Rear Window Screen Sunshade Shield Curtain
$19.83Mesh & Wire ClothAdd to cartDescriptions5Pcs Car Window Sun Visor Screen Car Side Rear Window Screen Sunshade Shield CurtainSpecificationsSizeRear Sun Visor:50 * 100 CmThe Front Side Of The Sun Visor:36 * 44 CmThe Back Side Of The Sun Visor:36 * 44 CmMaterial:3D Photocatalyst MeshWeight:Approx.60 gFeatures– Convenient to use and take down with two suckers.– Can reflect 90% direct sunlight and …
5Pcs Car Window Sun Visor Screen Car Side Rear Window Screen Sunshade Shield CurtainRead More
5Pcs Micro USB TP4056 Charge And Discharge Protection Module Over Current Over Voltage Protection
$9.32Battery Protection ModuleAdd to cartCharacteristicOn-board TP4056 lithium battery charging management chipOn-board micro USB head, can be directly connected with most of the smart phone charger as the input side to the lithium battery chargingReserved IN+ and IN- input port, convenient user DIYOn-board charging status indicatorSupport charge discharge over current protectionChip with constant current and constant pressure, full automatic stopSupports …
Keyes Brick TEMT6000 Light Sensor(Pad hole) Analog Signal Module with Pin Header Version
$6.10Sensor & Detector ModuleAdd to cartDescriptionThis is a commonly used TEMT6000 light sensor which mainly uses TEMT6000X01 components. The component is a highly sensitive visible light sensitive (NPN) transistor. The sensor can magnify the change of the tiny light rays captured about 100 times, and is easily recognized by the microcontroller for AD conversion. Its response to visible light illumination …
Keyes Brick TEMT6000 Light Sensor(Pad hole) Analog Signal Module with Pin Header VersionRead More
100W18V Foldable Portable Monocrystalline Solar Panel with 5V USB Port
$301.75Smart Robot & Solar PanelAdd to cartFeatures– The outermost layer of the product is made of thick and breathable nylon bag. It`s easy to carry and portable coz it`s folable and has a handle, which is suitable for camping, hiking, hiking, and can be used as a backup power source for mobile phones and car batteries.– It`s equipped a USB&DC junction …
100W18V Foldable Portable Monocrystalline Solar Panel with 5V USB PortRead More
GY-213V-HDC1080 High Accuracy Digital Humidity Sensor with Temperature Sensor
$15.30Sensor & Detector ModuleAdd to cartDescriptionThe HDC1080 is a digital humidity sensor with integrated temperature sensor that provides excellent measurement accuracy at very low power. The HDC1080 operates over a wide supply range, and is a low cost, low power alternative to competitive solutions in a wide range of common applications. The humidity and temperature sensors are factory calibrated.FeaturesRelative Humidity …
GY-213V-HDC1080 High Accuracy Digital Humidity Sensor with Temperature SensorRead More
Reviews
There are no reviews yet.