Project Description
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Project description
The Multimeter Kit provides you with everything you need to make your own multimeter capable of measuring voltage (0-30VDC, 0.05 resolution) current (0-500mA, 1mA resolution) and resistance (0-100kΩ). The resistance mode also includes a continuity test: the buzzer will sound when the resistance probes are shorted together, this is one of the more handy tools of any multimeter.
Using the Multimeter Kit is very straightforward. To measure voltage connect your probes to the 'Voltage' and 'Common' pins, for current measurement the 'Current' and 'Common' pins. Resistance measurement uses the 'Res-1' and 'Res-2' pins. The decimal points are used in resistance measurement mode to indicate 10kΩ and 100kΩ ranges.
Project description, more information and ordering can be found at https://www.sparkfun.com/products/10956
ATMega328: http://www.sparkfun.com/commerce/product_info.php?products_id=9061
LM358 Op-Amp: http://www.sparkfun.com/commerce/product_info.php?products_id=9456
3.3V Voltage Regulator: http://www.sparkfun.com/commerce/product_info.php?products_id=526
Red 4-Digit 7-Segment Display: http://www.sparkfun.com/commerce/product_info.php?products_id=9483
Buzzer 2.048 KHz: http://www.sparkfun.com/commerce/product_info.php?products_id=7950
Battery Holder Pack AA x 4: http://www.sparkfun.com/commerce/product_info.php?products_id=552
100uF Capacitor: http://www.sparkfun.com/commerce/product_info.php?products_id=96
10uF Capaciator: http://www.sparkfun.com/commerce/product_info.php?products_id=523
1.0kΩ Resistor: http://www.sparkfun.com/commerce/product_info.php?products_id=8980
10kΩ Resistor: http://www.sparkfun.com/commerce/product_info.php?products_id=8374
SPDT Mini Power Switch: http://www.sparkfun.com/commerce/product_info.php?products_id=102
Push Button Switch: http://www.sparkfun.com/commerce/product_info.php?products_id=97
Banana to Test Probes Pair: http://www.sparkfun.com/products/505
Assembly Instructions: http://www.sparkfun.com/datasheets/Kits/SFE03-0010-KitCard-Multimeter-ReadersSpreads.pdf
Source Code: http://www.sparkfun.com/datasheets/Kits/Multimeter%20Kit%20v15.zip
Awesome time-lapse assembly video: http://www.modrobotics.com/blog/?p=162
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Design Files
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Component (22)
Qty
Description
![](https://upverter.com/static/renders/components/f34/f3422a2fb265e507_48x48.png)
SparkFun:BANANA_CONN:
COMMON, RES2, RES1, V, C
5
SparkFun:BANANA_CONN:
![](https://upverter.com/static/renders/components/009/0090fdf751854bf6_48x48.png)
SparkFun:AVR_SPI_PRG_6:PTH
U$4
1
SparkFun:AVR_SPI_PRG_6:PTH
![](https://upverter.com/static/renders/components/7ea/7eae9898287e6b22_48x48.png)
SparkFun:RESISTOR:KIT
R1, RSHUNT, R3, RS, R4, R2, RRESET
7
SparkFun:RESISTOR:KIT
![](https://upverter.com/static/renders/components/173/1739caa8773d0540_48x48.png)
SparkFun:GND:
GND4, GND8, GND6, GND5, GND3, GND11, GND10, GND2, GND1, GND7, GND9
11
SparkFun:GND: