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The SparkFun Load Sensor Combinator is a bare PCB that combines four load sensors into a standard four-wire Wheatstone bridge configuration. If you open up an electronic bathroom scale, you’ll find a large rat's nest of wires. The Load Sensor Combinator was created to combine the 12 wires found in a bathroom scale into the standard four-wire Wheatstone bridge configuration.
This version of the SparkFun Load Sensor Combinator features a few changes that you specifically asked for! We updated the silk on the breakout to read "C/+/-" instead of "R/W/B" and moved the temperature sensor connector away from the standoff hole.
You can either use four individual load sensors or simply purchase an off-the-shelf bathroom scale and hack the combinator into it rather than trying to design a base to properly mount four load sensors.
If your amplifier and supporting electronics are more than a few inches away from the scale, an RJ45 footprint is provided. The four Wheatstone pins (E+/E-/S+/S-) as well as the shield pin are connected to twisted pairs within a standard cheap Ethernet cable. This allows the amplifier board to be placed many feet away from the scale itself.
For specific temperature-to-resistance, check the lookup table.
DescriptionThe eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies..
These boost (step-up) voltage regulators generate higher output
voltages from input vo..
This is a bare wires bead-probe which can measure air or surface temperatures. Most inexpensive the..
These are good for reverse polarity protection (put it between your DC power jack and circuitry to ..
D24V5Fx regulator family overview
These buck (step-down) voltage regulators generate lower output vo..
This board is a compact (0.5″ × 0.9″) breakout board for ST’s L3GD20 three-axis digital-ou..
KWD 0.75 KWD 0.45
This 5 V boost (step-up) voltage regulator generates higher output voltages from input vol..
D24V5Fx regulator family overview
These buck (step-down) voltage regulators generate lower output v..
This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V ..
These boost (step-up) voltage regulators generate higher output voltages from input voltages as low ..
The compact (0.4″ × 0.5″) D24V5F6 synchronous buck voltage regulator takes an input voltage of up to..
The eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the l..
These boost (step-up) voltage regulators generate higher output voltages from input voltage..
This current sensor is a carrier board or breakout board for Allegro’s ACS709LLFTR-35BB-T..
This current sensor is a carrier board or breakout board for Allegro’s ACS711KLCTR-12AB-T Hall effec..
This current sensor is a carrier board or breakout board for Allegro’s ACS711KLCTR-25AB-T Hall effec..
1x Getting Started with Adafruit FLORA book
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This GPS shield works great with either UNO or Leonardo Arduinos and is designed to log data to an S..
The AM2302 is a wired version of the DHT22, in a large plastic body. It is a basic, low-cost digital..
An anemometer is a device used for measuring wind speed, and is a common weather station instrument...
Decode nearly any kind of 1D (striped) barcode in your project using this adorable compact barcode s..
The pre-programmed Touch Board is Arduino-at-Heart, so your Arduino shields and code will work seeml..
This pressure sensor from Freescale is a great low-cost sensing solution for precision measurement o..
The Pololu basic 2-channel relay carrier modules make it easy to control two single-pole, double-thr..
The included power relay is an Omron G5LE-14-DC5 and is rated for up to 10 A under most conditions...
These lightweight brackets are made from 0.8mm-thick aluminum and are specifically designed to work ..
The Sensor Film Kit is a great new way to make custom-sized sensors out of force sensitive material...
These spring-vibration switches are high sensitivity non-directional vibration induced trigger switc..
Secure your project with biometrics - this all-in-one optical fingerprint sensor will make adding fi..
This flammable gas and smoke sensor detects the concentrations of combustible gas in the a..
Take your project portable with the included battery pack and stitch it into a final design with con..
This force-sensing resistor (FSR) from Interlink Electronics is a passive component that acts as a v..
This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Hand..
For more info checkout the datasheet:
This board is a compact (0.4″ × 0.9″) breakout board for ST’s L3GD20H three-axis digital-output gyro..
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The MAX7219CNG is a compact, serial input/output common-cathode display driver that can interface mi..
As digital devices get smaller and faster, once ubiquitous 5 V logic has given way to ever lower-vol..
This sensor can detect flexing or bending in one direction. They were popularized by being used in t..
These pressures can easily be converted to altitudes. The board has a 3.3 V linear regulator and int..
This board is a compact (0.4″ × 0.9″) breakout board for ST’s LSM6DS33 inertial module, which featur..
This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is ..
Using the MaKey MaKey you can make anything into a key (get it?) just by connecting a few alligator ..
KWD 27.50 KWD 22.00
This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) wit..
Need to add analog inputs? This chip will add 8 channels of 10-bit analog input to your microcontrol..
The "poor man's" accelerometer/motion sensor! These spring-vibration switches are medium sensitivity..
This methane gas sensor detects the concentration of methane gas in the air and ouputs its ..
These small single-pole, double-throw (SPDT) slide switches are rated for 300 mA at 50 VDC and have ..
When you need to amplify, filter, add, or otherwise manipulate analog signals you'll certainly want ..
This set includes sensor boards and reflective wheels to add quadrature encoding to two mi..
Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to..
Detects a wide range of colors and outputs data as 10-bit RGB (Red/Green/Blue) compone..
To use, connect one side of the photo cell (either one, its symmetric) to power (for example 5V) and..
This Photo Transistor Light Sensor is a simple sensor that detects ambient light. It's kind of the o..
KWD 3.00 KWD 2.50
KWD 21.00 KWD 18.00
Runs on 5V-16V power (if you need to run it off of 3V you can do that by bypassing the regulator, bu..
The Pixy CMUCam 5 is an image sensor with a powerful processor that you can program to only send the..
The GP2Y0A60SZ distance sensor from Sharp offers a wide detection range of 4″ to 60″ (10 cm to ..
Operating voltage: 2.7 V to 6.2 VAverage current consumption: 5 mA (typical)Output ty..
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Pulse Sensor Amped adds amplification and noise cancellation circuitry to the hardware. It's noticea..
The QTR-3A reflectance sensor array is intended as a line sensor, but it can ..
The QTR-3RC reflectance sensor array is intended as a line sensor, but it ca..
The Pololu RC switch with Digital Output can be used with standard hobby radio control systems for r..
This RC relay enables easy control of large, electrically isolated loads in radio control (RC) syste..
Description: Resistors are a good thing, in fact, they’re actually crucial in a lot of circuit desig..
KWD 4.75 KWD 3.75
Triple-axis analog accelerometer - for measuring motion and tilt
Force sensitive r..
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The SN74HC595N is a simple 8-bit shift register IC. Simply put, this shift register is a device that..
These sensors are easy to use, they are basically resistors that change value based on how much thei..
These spring-vibration switches are high sensitivity non-directional vibration induced trigger swit..
This single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose micro switch..
It is designed to be submersible in water, but it's always best to avoid long-term (over 1 hour at ..
A solid state relay (SSR) allows you to control high-curent AC loads from lower voltage DC control ..
KWD 4.75 KWD 3.25
2.5V rated maximum voltage. 630 Farads.
This datasheet covers the DL series, this is the ol..
Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The..
Great for whenever you need to control medium to high-power electronics such as motors, solenoids, o..
Wide range, low power temperature sensor outputs an analog voltage that is proportional to the ambie..
We've now got a wider range version of favorite triple-axis accelerometer - it even has an on-board ..
Operating Voltage: 2.5 V to 5.5 V
Carrier Frequency: 38 kHz
These pretty strips of light are plastic diffused backlights, often seen in LCD displays. Normally t..
The X-Band Motion Detector operates in the X-band frequency, at 10.525 GHz and indicates detected mo..
This pressure transducer has a range of 0 - 500 PSI (1723.69 kPa) and an accuracy..
This pressure transducer has a range of 0 - 10000 PSI (1723.69 kPa) and an a..
is a great battery-backed real time clock (RTC) that allows your
Ring! Who's that callin'? It's your breadboard! Introducing Adafruit
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Description: Piezo elements come in handy when you need to detect vibration or a knock. You can..
Description: This basic piezo sensor from Measurement Specialties is often used for flex, touch..
Description: The SparkFun Soil Moisture Sensor is a simple breakout for measuring the moisture ..
This current sensor is a carrier board or breakout board for Allegro’s ACS714LLCTR-05B-T Hall effect..
Feature:1.Working Voltage : 5V(DC)2.Static current: Less than 2mA..
Description: A simple flex sensor 4.5" in length. As the sensor is flexed, the resistance acros..
Description: A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance acros..
This miniature single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose mi..
This allows a microcontroller with an analog-to-digital converter (ADC), such as an Arduino&nbs..
This breakout board will solve all your current-monitoring problems. Instead of struggling with a mu..
Sharp GP2Y1010AU0F onboard, detecting fine particle larger than 0.8μm in diameter, even like the cig..
KWD 13.00 KWD 11.00
Capacitance: 330 uFMaximum Voltage: 35 VHeight: 0.63" (16 mm)Diameter..
This TI SN754410 motor driver features two H-bridges that can be used
for bidirectional control of ..
KWD 9.75 KWD 6.75
KWD 6.00 KWD 4.50
Pretty Standard copper-strip board for prototyping and general circuit soldering. 30 Lines with 48 h..
Kit Listing:White LED Module * 1RGB LED Module *13W LED Module &n..
This single relay module can be used in interactive projects. This module uses SONGLE 5v high-qualit..
The DRV8825 stepper motor driver carrier is a breakout board for TI’s DRV8825 microstepping bipolar ..
keyestudio XD-58C pulse sensor module is used to measure heart rates. It’s widely applied for studen..
Lots of robot projects need joystick. This module provides an affordable solution. By simply connect..
This is a basic application module. You can simply plug it into an IO shield to have your first tast..
This sensor adopts TCS3200 programmable color light-to-frequency converter, it can be applied to col..
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keyestudio CNC shield V3 is used as driving shield for engraving machines, fully compatible with UNO..
The DS3234 is a low-cost, extremely accurate SPI™ bus real-time clock (RTC) with an integrated tempe..
keyestudio GUVA-S12SD 3528 Ultraviolet Sensor is used to detect ultraviolet light. It includes GUVA-..
1. 5V Omron solid state relays 240V / 2A, output with resistive fuse 240V / 2A.2. Size: 57 * 55 * 23..
The AD8232 is an integrated front end for signal conditioning of cardiac bioelectrical signals to mo..
1. 5V Omron solid state relays 240V 2A, output with resistive fuse 240V 2A.2, the input power supply..
Using this device enables the use of Arduino code in a custom embedded project witho..
5x RED5x YELLOW5x BLUE5x GREEN..
The new generation 18 pin PICAXE microcontroller now has parallel tasking, touch sensors and more me..
PICAXE is a neat entry-level microcontroller system that is relatively cheap to get started with. Th..
PICAXE 28 pin microcontroller chip. Enhanced PICAXE28 chips with 8x memory and many additional featu..
This adjustable boost (step-up) voltage regulator generates higher output voltages (between 2 V..
The D24V22Fx family of step-down voltage regulators generates lower output voltages from input volta..
Input voltage: 4 V to 36 V for the version that outputs 3.3 VFixed 3.3 V, 5..
This cyber-tronic looking sensor hides a secret behind its glimmering eye. Unlike most temperature s..
This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74..
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KWD 29.00 KWD 22.00
An adjustable potentiometer can open up many interesting user interfaces. With this rotary potentiom..
This is a 35mm concave momentary push button similar to the ones you find on arcade games. Simple sc..
This is a perfect choice if you are in need of a heavy duty push button! These metal push buttons ar..
This single-pole, double-throw (SPDT) rocker switch makes a great on/off power switch. It is rated f..
Knobs are a great way to finish off your project and make it easier to adjust the level of your deat..
This is a standard 12mm square momentary button. What we really like is the large button head and go..
Operating voltage: DC 5VQuiescent current: 5mA. Farthest distance: 4.5m.The device is waterproof, bu..
This load sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales ..
CPUUp to 10 MIPS performanceC compiler optimized RISC architecture8 x 8 Single Cycle Hardware Multip..
Special Microcontroller Features:Precision Internal Oscillator:Factory calibrated to ±1%Software sel..
Power Control PWM Module (8 channels)Motion Feedback Module w/ Quadrature Encoder Interface200Ksps A..
High-Performance dsPIC30F coreModified Harvard architectureC compiler optimized instruction set arch..
For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (R..
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