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Basic Electronics

NerdKits » Forums » Basic Electronics (453 threads, 3939 posts)
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Turn Vac on when tool turns on 7 1633 April 12, 2016
by Ralphxyz
USBasp Help! 3 1590 October 22, 2015
by sask55
Would someone explain Proximity Sensor? 19 3250 May 04, 2015
by mongo
Need to replace Wall Watt 16 896 May 02, 2015
by Ralphxyz
Connecting Mosfet 10 1381 April 10, 2015
by Noter
My new 3D Printer 44 15306 April 07, 2015
by Rick_S
AtMega 644 2 1613 September 06, 2014
by Rick_S
Switching between +5v and -5V 2 986 August 07, 2014
by Rick_S
Are there hobby printers for my microproccessor? 4 1165 June 02, 2014
by JKITSON
Automated programming mode? 9 1436 April 08, 2014
by Rick_S
Shuttering with the Nerdkit & piezo buzzer (Can't post in Support, gives error) 5 1307 January 30, 2014
by BobaMosfet
Shuttering with the Nerdkit & piezo buzzer (Can't post in Support, gives error) 1 994 January 28, 2014
by lailai
What kind of error is this? 4 1234 January 23, 2014
by Noter
How to double a DC voltage? 20 5380 January 12, 2014
by JKITSON
Is the code the driver? 2 972 January 12, 2014
by Ralphxyz
Miniature headers 6 1281 January 01, 2014
by Ralphxyz
BLDC 8 1201 December 23, 2013
by esoderberg
I need help finding a terminal. 17 1593 November 26, 2013
by Rick_S
GLCD SPI problems 14 3409 November 10, 2013
by andyi
Moving on... 7 1383 November 08, 2013
by Pr0ject
Power supply questions 4 1634 October 31, 2013
by sask55
OLED 4 1099 October 29, 2013
by esoderberg
Thermocouple wiring?? 19 5094 September 22, 2013
by sask55
Opto Interrupter once again 14 3275 September 19, 2013
by scootergarrett
FFC/FPC connection ideas? 4 1228 September 10, 2013
by Ralphxyz
A3977 Stepper Motor Driver 42 6023 September 02, 2013
by Ralphxyz
USB cable specifications 7 1309 August 29, 2013
by Noter
Help with reading UART Stream on mac 9 1429 August 27, 2013
by Affarram
XMEGA Breakout 8 1564 August 26, 2013
by JKITSON
Can someone help me with LDOs? 5 1009 August 21, 2013
by BobaMosfet
lower voltage of sensor output LM335 5 1412 August 20, 2013
by Osarus
TQFP ATmega 168 capacitors 6 1471 August 01, 2013
by scootergarrett
Stepper Motor Programming 154 5399 July 21, 2013
by sask55
Low Voltage Level Translator That Fits the MCU and Breadboard 63 7043 June 18, 2013
by Noter
Two Wrongs Make it Right 3 1145 May 22, 2013
by meltbox360
accurate time for a real time clock 5 1482 April 08, 2013
by pcbolt
Using diode to drop voltage 12 31062 March 27, 2013
by Ralphxyz
Cannot understand the pins 3 988 March 27, 2013
by oshjdf
Since it is kinda slow around here I thought I'd ask .... 6 1226 March 15, 2013
by sask55
What is the purpose of 1000 ohm resistor for LCD's pin 3? 10 2547 March 14, 2013
by mongo
Current vs Voltage 8 1845 March 14, 2013
by sask55
Control LED Stripes with 2N7000 MOSFET 3 1689 March 09, 2013
by lnino
Electric current 2 1046 March 08, 2013
by Ralphxyz
How to power up Sim908 module? 4 3443 March 07, 2013
by Ralphxyz
Limiting battery discharge? 12 2896 March 03, 2013
by mongo
feeding a 7805 with 24VDC for <25mA output? 11 2609 February 28, 2013
by BobaMosfet
Control electronic door opener 15 1456 February 24, 2013
by lnino
Relay Question 27 4064 February 19, 2013
by Noter
Rotary Encoder how to?? 21 3189 February 15, 2013
by BobaMosfet
Unipolar Stepper motor with ULN2003A, 4 1656 February 11, 2013
by Ralphxyz
Introductory circuit design books 2 1946 January 30, 2013
by pcbolt
Anyone know how to program an 8052 MCU? 8 1520 January 03, 2013
by BobaMosfet
Higher power supplies with ATMega168 (running higher voltage devices with lower powered ground) 4 1450 December 30, 2012
by BobaMosfet
edX Free MIT online course 4 1791 December 22, 2012
by pcbolt
handling microprocessor and static eletricity 22 1459 December 18, 2012
by JKITSON
Voltage Divider (Resistors) 9 2158 December 17, 2012
by GenHornet18
iphone-controlled R/C car project 2 1191 November 26, 2012
by JimFrederickson
Wire broke off in LCD pin 6 1212 November 26, 2012
by gsjbjt
Where to buy individual oscillators 8 1254 November 26, 2012
by Pew446
Need help using a 5v relay to trip a 12v relay 9 5466 November 18, 2012
by carlhako
SPI slave clock 6 1536 October 27, 2012
by Ralphxyz
Flow of Electricity through this circuit 8 1244 October 26, 2012
by RogerFL
Why pick a crystal frequency of 14.7456 MHz? 16 16114 October 23, 2012
by Noter
NPN circuit connection quandry 4 1605 September 24, 2012
by edb
Simple I/O circuit 4 1330 September 23, 2012
by wadaltmon
Flow of Electricity through this circuit 1 1068 September 21, 2012
by Davda
Flow of Electricity through this circuit 1 987 September 21, 2012
by Davda
LED - Common Anode 8 Segment Display 13 2527 September 20, 2012
by pcbolt
Can I Power the ATmega168 with 3.3 V? 4 1421 September 20, 2012
by karam
Measuring PWM Duty Cycle 6 3165 September 13, 2012
by dan_engbers
Electronics simulation 8 1849 August 31, 2012
by Chris100
LED Sign Help - How to control words 26 3279 August 27, 2012
by Rick_S
Help me on my learning path please :) 4 1343 August 20, 2012
by rblalock
louder sound 2 1156 August 18, 2012
by mongo
connector or cable for LCD display? 4 1293 August 13, 2012
by missle3944
Powering L.E.Ds 5 1362 August 09, 2012
by BobaMosfet
Wires in U.K 5 1479 August 08, 2012
by mikey6879
Bluetooth Please HELP! 3 1586 July 29, 2012
by Ralphxyz
Stepper Motor Motor Speed Control 13 3128 July 25, 2012
by sask55
Anything wrong with adding a large bypass capacitor? 6 3561 July 25, 2012
by bretm
Stepper Motor Direction Control 12 1745 July 21, 2012
by live4the1
Using Usbasp for attiny25 36 15586 July 21, 2012
by lnino
um help 6 1143 July 20, 2012
by Rick_S
Stepper Motor L298N/L297N controller 3 1535 July 18, 2012
by Ralphxyz
help me 11 1659 July 03, 2012
by Rick_S
Crystal Oscillator question 2 1236 July 02, 2012
by pcbolt
This will lead to more questions, how to use 20 volt battery to power projects and motors? 9 1973 June 24, 2012
by Ralphxyz
HELP 3 1180 June 24, 2012
by Ralphxyz
Controlling Stepper Motors 35 8972 June 21, 2012
by mcguinnessdr
Geomagnetic vectors with a magnetoresistive sensor? 1 1171 June 19, 2012
by lcruz007
PT100 temperature sensor reading 1 2171 June 17, 2012
by RogerFL
Programmable current source 6 1932 June 14, 2012
by JamesFysh
Increase range of an IR LED. 4 1989 June 11, 2012
by mongo
HELP 6 1311 June 11, 2012
by mikeduff76
Running motor through the mircocontroller 8 1584 June 09, 2012
by mongo
How can I detect the signal from a key fob? 15 19728 May 24, 2012
by Ralphxyz
i need a code 8 1645 May 15, 2012
by pcbolt
Clock Accuracy 30 4881 May 14, 2012
by HexManiac
Relays and Controlling them 9 1581 May 10, 2012
by sask55
Using Internal 8 MHz Oscillator 4 1895 May 09, 2012
by RogerFL
Powering your NerdKit 7 1489 April 27, 2012
by Ralphxyz
output pin is 2.5v when low 7 1408 April 27, 2012
by BobaMosfet
Lm317 vs lm317t 2 2521 April 26, 2012
by BobaMosfet
nOOb looking for additional explanation 6 1577 April 24, 2012
by pcbolt
Programs will not run 6 1434 April 16, 2012
by E2MicroRobots
CE EMITTER_BIAS CONFIGURATION 12 1799 April 10, 2012
by Ralphxyz
Anyone used a 2 x 20 LCD? Which one? 10 1585 April 09, 2012
by Ralphxyz
Path Lights controller 2 1384 April 04, 2012
by pcbolt
Frequency Response and stability, how do you determine if your system is stable 7 1545 April 02, 2012
by Akeshish
Very fundamental problem of operating with out a ground?? 11 1759 April 02, 2012
by sask55
line-level output, regulator ICs and op-amps?? 3 1564 April 01, 2012
by JamesFysh
Question on LCD screen 5 1462 March 30, 2012
by billtaichi
Is this Capaciator Good 4 1443 March 29, 2012
by mongo
Oscilloscopes (for the umpteenth time) 5 2774 March 29, 2012
by mongo
Basic Electronics Tutorial to Complement Nerdkits? 5 2057 March 26, 2012
by Ralphxyz
PIR motion sensor to trigger home wireless camera problems 4 3384 March 23, 2012
by 6ofhalfdozen
Ground connector on power supplies?? 3 1585 March 15, 2012
by Ralphxyz
Why TC negative connected to ground 3 1764 March 15, 2012
by mongo
Digital servo issues! 9 1808 March 15, 2012
by Rick_S
Brushless motor control 16 2186 March 12, 2012
by hevans
Windows not detecting device 3 1349 March 10, 2012
by hevans
Voltage throught MCU 5 1307 March 05, 2012
by Ralphxyz
Ignition Coil Driver 16 14299 March 02, 2012
by RevMoses
Rotary Encoder pinout (and other questions I am sure) 8 4818 March 02, 2012
by Ralphxyz
Why do you pass a MIC Vout through a capacitor? 12 6272 March 01, 2012
by hevans
Up and running... 3 1208 March 01, 2012
by dvdsnyd
9v to vcc survivable? 5 1541 February 26, 2012
by RogerFL
Accurate AREF for accurate ADC voltage readings 4 1850 February 26, 2012
by carlhako
Problem with code (2 inputs) 12 1402 February 24, 2012
by Rick_S
programming lcd trubs 7 1440 February 19, 2012
by raccoons
17 super bright white LEDs at the same time...SAFE?! 5 1979 February 18, 2012
by Rick_S
Oscilloscope 15 2930 February 18, 2012
by Osarus
How far away can a LM34 be? 16 5564 February 14, 2012
by dcarter777
Need help understanding a relay schematic 4 2519 February 14, 2012
by Ralphxyz
It's true, we forget... 18 1599 February 12, 2012
by Farmerjoecoledge
Very Basic Batteries in a Series Question 12 4228 February 09, 2012
by mongo
Data transmission 3 1910 February 08, 2012
by amartinez
PowerLineCommunication(PLC) vs Wireless 3 1834 February 05, 2012
by mongo
CAPACITIVE POWER SUPPLY 6 2807 February 04, 2012
by met_fredrik
ADC reads fluctuating voltage when nothing is connected! 2 1444 February 03, 2012
by BobaMosfet
connencting two ics to port 3 1240 January 31, 2012
by tchilzer2
H bridge questions 6 1597 January 27, 2012
by tchilzer2
Voltage Regulators and Efficiency... 3 1641 January 24, 2012
by JimFrederickson
Voltage Drop when LEDs Flash 8 1811 January 23, 2012
by Rocket_Man_Jeff
LED Array - Wall power problems 14 1951 January 19, 2012
by sask55
How to measure floating (isolated) high DC voltage? 5 3939 January 17, 2012
by jfbrink
Mysteries of Capaciators in Reverse 9 1751 January 15, 2012
by Rick_S
Source of power? 19 1722 January 13, 2012
by mongo
symbol defined please? 4 1869 January 13, 2012
by sonicgadgets
Best zero cross detection IC 14 10000 January 07, 2012
by met_fredrik
How hot is too hot for the voltage regulator 3 1472 January 06, 2012
by boxvic
Basic LED circuit properties 8 1689 January 06, 2012
by boxvic
Getting Started 3 1480 January 05, 2012
by Stretch
Source of randomness for the hardware RNG 20 2088 January 02, 2012
by bodangly
SMD reflow 16 2317 December 27, 2011
by boxvic
kirchhoff's voltage law... 3 1523 December 25, 2011
by jbolfiil
Phase Shifter or time delay circuit? 7 2001 December 23, 2011
by BobaMosfet
Potentiometer 8 2100 December 23, 2011
by huzbum
Fun with Op-Amps 3 2730 December 22, 2011
by treymd
Do I need an H-Bridge? 14 1868 December 19, 2011
by n1cl3
Need Diode Data Sheets 2 1705 December 07, 2011
by BobaMosfet
Odessy of the minds 5 1779 December 05, 2011
by BobaMosfet
Having trouble uploading my program keep getting this error: Any ideas anyone. Thanks 2 1359 November 27, 2011
by sazD
Initial Load 2 1729 November 27, 2011
by missle3944
Using pushbuttons to increment position of servo 4 1987 November 23, 2011
by SpaceGhost
Yellow USB wire problem 15 2752 November 22, 2011
by Ralphxyz
Speakers with LEDs that light with the music 4 1851 November 14, 2011
by mongo
Strange behaviour with a DC motor 18 5135 November 10, 2011
by jfbrink
Servo Squitter Project 13 1683 November 09, 2011
by Heed
how do i run a program 4 1405 November 08, 2011
by Heed
Help!!! my grades are in jeopordy 3 1476 November 07, 2011
by Heed
Motor control question 2 1435 November 04, 2011
by hevans
Help driving a high voltage Piezo 6 3923 November 02, 2011
by buffetrand
9V transformer more like ~15V 2 1608 October 31, 2011
by hevans
Tick Tock Clock question about which pins and long load times from DASA. 1 1486 October 25, 2011
by apphilosophy
Why is reversing polarity a bad thing? 26 44657 October 24, 2011
by glendon
Measuring Capacitance 9 2701 October 24, 2011
by Ralphxyz
9 VDC 1000mA to much? 4 1683 October 21, 2011
by mongo
Hardware/software oscilloscope? 7 2524 October 19, 2011
by cyberion
R-2R ladder using random crap resistors 25 10664 October 16, 2011
by sask55
RxD / TxD Questions 10 3390 October 13, 2011
by Twarter369
Basic Electrical Toggle Switch question.. 5 1739 October 07, 2011
by scottmc94
Piezo Buzzer - help 6 1668 October 03, 2011
by scottmc94
Program Upload Error with initialload 17 1417 September 30, 2011
by nerdgirl
I'm Curious About The Breadboard 2 1464 September 27, 2011
by BobaMosfet
Any games for Learning Electronics? 12 5928 September 21, 2011
by sask55
Help re-purposing A Palm M100 Portable Keyboard. 3 2600 September 18, 2011
by Twarter369
I just bought a Oscilloscope!! 57 18498 September 16, 2011
by dgikuljot
Digital Multimeter will not show resistance! 12 3851 September 16, 2011
by bretm
Something fast and with a lot of memory... 5 1435 September 16, 2011
by 6ofhalfdozen
595 Shift Array, BC337 Transistor and Solenoid 9 4032 September 14, 2011
by BobaMosfet
4 Transistor H-Bridge Fail 46 6666 September 10, 2011
by bretm
Nerdkit/Arduino with EL wire 34 5008 September 10, 2011
by Ralphxyz
Question about frequency and duty cycles on a multimeter 9 1799 September 01, 2011
by BobaMosfet
Dim LED 3 1461 August 23, 2011
by Rocket_Man_Jeff
Embedding Multi-Core Processors 17 1805 August 23, 2011
by Twarter369
Easy Transistor Question 4 2063 August 20, 2011
by jimmyw404
Daisy chaining MC74MC595 Shift Registers 13 2980 August 18, 2011
by Ralphxyz
Building a coil?? 12 2974 August 12, 2011
by Ralphxyz
Programming the micro-controller 9 1743 July 26, 2011
by Rick_S
Advice needed for further projects with my nerdkit 3 1512 July 22, 2011
by codenamejupiterx
more questions about tempsensor.c code 4 1276 July 22, 2011
by codenamejupiterx
tempsensor.c code question 3 1276 July 22, 2011
by codenamejupiterx
Which way does electricity flow? Positive-to-Negative or Vice Versa? 5 12446 July 22, 2011
by rboggs10
Converting input signal for ADC, impedance matching? 7 2176 July 20, 2011
by BobaMosfet
my lcd went blank except a little line that looks like a cursor 2 1530 July 20, 2011
by codenamejupiterx
Temperature project unclear explanation of error in uncompiled code 5 1631 July 20, 2011
by codenamejupiterx
make file errors on initialload.c 6 1578 July 17, 2011
by Ralphxyz
Error: "Maybe it isn't a butterfly/AVR109 but a AVR910 device?" 3 3130 July 17, 2011
by codenamejupiterx
the make file cant locate the libnerdkits 3 1472 July 17, 2011
by codenamejupiterx
avr macpack 3 1508 July 16, 2011
by codenamejupiterx
acd with 2 inputs? 18 1678 July 14, 2011
by Ralphxyz
Electro-magnetism. Concept check. 14 1628 July 13, 2011
by BobaMosfet
Battery clip wires 3 1396 July 10, 2011
by codenamejupiterx
Electronics advice needed 3 1303 July 10, 2011
by codenamejupiterx
I cant get my lcd to work 5 1346 July 10, 2011
by codenamejupiterx
2-ROW LCD Only Displaying 2 Rows of 8 dark blocks.... 3 1678 July 10, 2011
by gcharris
Help Please **** I can only use a 9v battrey sent by Nerdkits 35 2045 July 03, 2011
by wintersdb
Switching Ground with a transistor 12 9452 June 28, 2011
by dgikuljot
Powering I2C remote device? 3 1656 June 27, 2011
by Ralphxyz
rechargeable battery for project 2 1562 June 23, 2011
by BobaMosfet
TTL ULN2038 Question 40 2981 June 17, 2011
by Rick_S
Circuit board for monophonic signal generator 1 1879 June 15, 2011
by kayrock
4 Channel Voltage and Current Monitor 3 1782 June 15, 2011
by gcharris
"-U": The system could not find the file specified ERROR 6 1693 June 08, 2011
by pgdsmca
LCD Only showing 2 black Lines ????? 7 1831 June 06, 2011
by mja
A couple of questions 3 1455 June 06, 2011
by Ralphxyz
How much should I strip? 3 1390 June 01, 2011
by mongo
How do I interface a Parallel-In Serial Out Shift Register with my microcontroller? 8 1895 June 01, 2011
by hevans
Motor Control/MCU power bus 5 1535 May 30, 2011
by esoderberg
How do I use two Serial or Parallel-in/serial out shift registers together? 2 1870 May 29, 2011
by Rick_S
Digital Input Question 4 1579 May 28, 2011
by frankdwest
PCB arrived 20 1625 May 25, 2011
by Ralphxyz
Save state data to EEPROM with power cutoff capacitor value? 4 2198 May 24, 2011
by gcharris
Calculating bypass capacitor 6 12162 May 19, 2011
by Ralphxyz
What shift register should I buy? 4 2148 May 09, 2011
by Noter
IR current 6 1926 May 05, 2011
by missle3944
Turning on COmputer without Switch 39 2538 May 04, 2011
by hariharan
Heat sensors 21 2539 May 04, 2011
by Hexorg
error 1 2 1580 May 02, 2011
by hevans
Transistor vs mosfet 13 7736 May 01, 2011
by Noter
PCB trace width calculator 3 2673 April 24, 2011
by esoderberg
OLED display 10 2073 April 23, 2011
by Rick_S
Power Supplies 17 3011 April 22, 2011
by BobBolinger
LCD & battery&USB 4 1448 April 22, 2011
by Ralphxyz
Amperage Multiplyer 6 1889 April 21, 2011
by Rick_S
ADC Theremin Help... 1 1498 April 20, 2011
by jasongillikin
RF and oscoliscope 2 1942 April 19, 2011
by mongo
Connecting to external control voltages 4 1737 April 19, 2011
by bretm
IR current question 7 1604 April 18, 2011
by BobaMosfet
What is the purpose of the resistor in this power supply? 4 2167 April 17, 2011
by rajabalu21
Not meeting input Voltage Threshold, amplify? and Do I need a buffer? (Button input, LED output) 14 2066 April 14, 2011
by bretm
USB cable issues (maybe fried) 7 1873 April 10, 2011
by uml_12
Basic projects 3 1656 April 09, 2011
by mongo
REFLOW oven 22 3766 April 07, 2011
by Rick_S
Why 5 volts is most widely used? 10 7014 April 07, 2011
by bretm
unexpected MCU rebooting 82 4874 April 05, 2011
by sask55
REFLOW Soldering 3 2138 April 05, 2011
by Ralphxyz
Setting baudrate for bluetooth connectivity 1 1841 March 31, 2011
by AbhishekBhat
Oscilation circuits 8 3777 March 30, 2011
by bretm
Black Display on LCD 6 1822 March 28, 2011
by Druidman
32kHz clock 2 1703 March 28, 2011
by Rick_S
Debouncing and External Interrupts 9 6050 March 27, 2011
by Mujda
Geiger Counter Schematic Help 3 5406 March 18, 2011
by mongo
Thermocouples, relays, and fun!!! 12 3012 March 16, 2011
by mongo
LCD problem 3 1717 March 08, 2011
by Ralphxyz
How do I determine the throw characteristics of a Relay 8 2501 March 08, 2011
by bretm
ATMega168 Microcontroller simple relay with timer examIple 3 2462 March 01, 2011
by Rick_S
Why does my LED light if i so much as get near the circuit 3 1750 February 26, 2011
by nckomodo
Using a 555 IC instead of a Crystal Oscillator? 6 3247 February 26, 2011
by Ralphxyz
Pushbutton on off code 3 2310 February 26, 2011
by amartinez
Why does my led light without the battery? 2 2462 February 26, 2011
by hevans
24 volt DC to 12 volt DC 6 7495 February 25, 2011
by JKITSON
How to Switch a Solenoid? 11 4477 February 23, 2011
by Ralphxyz
Farads and Capacitors 8 2970 February 23, 2011
by Ralphxyz
How much to switch a relay? 3 4863 February 19, 2011
by Lusitania
My first Impression 6 1878 February 16, 2011
by devinsbusiness
Understanding battery life 3 2947 February 16, 2011
by devinsbusiness
Power Supply for LED's 4 2801 February 13, 2011
by sask55
Using Devices With Different Voltages 11 2269 February 05, 2011
by BobaMosfet
High voltage lines 26 3537 February 02, 2011
by mongo
USB 3 1711 February 02, 2011
by Jalex
Ultrasonic thickness gauge with the NerdKit; interference form capacitance? 12 2442 February 02, 2011
by Jalex
Alternating LED circuit 4 2235 February 02, 2011
by Rick_S
Powering a Stepper Motor 5 3021 January 31, 2011
by il1019
Affordable oscilloscopes 43 9384 January 27, 2011
by BStory
"And"gate unfinished thought 2 1611 January 27, 2011
by Hexorg
replace MCU? 30 5803 January 26, 2011
by Jalex
Using a thermometer with the nerdkits microcontroller. 17 2197 January 25, 2011
by Ralphxyz
Multimeter! 12 3822 January 25, 2011
by Jalex
Generate a steady DC level from PWM signal 9 2855 January 25, 2011
by Jalex
My LED Cube so far 25 6454 January 24, 2011
by Keyster
what is a butterfly in hardwaring 3 2734 January 22, 2011
by Rick_S
USing Calculator as Keypad 5 2142 January 18, 2011
by dgikuljot
Counting 5 1493 January 18, 2011
by Jalex
How do I calculate the cutoff frequency...? 3 4989 January 17, 2011
by bretm
Programming 5 2147 January 14, 2011
by Ralphxyz
Induction loop actuator 7 2542 January 11, 2011
by Yourself
Begining 7 2220 January 09, 2011
by Jalex
Is Single-bit Memory Cell Diagram on Pg 14 Correct? 6 2755 January 09, 2011
by pacnwdude
uninterrupted power supply for NerdKit project 4 2441 January 09, 2011
by mrobbins
RFB12B ... what are all this terms? >_< 5 1718 January 09, 2011
by mrobbins
UART operating at 3.3V 1 2094 January 06, 2011
by Mujda
Data input voltage 6 2380 January 03, 2011
by Rick_S
MOSFET Question 7 2303 December 31, 2010
by Keyster
Transistor as a switch 5 2083 December 29, 2010
by Hexorg
Resistors 5 2603 December 28, 2010
by georgio
Problem with NPN Phototransistor 16 6431 December 28, 2010
by Ralphxyz
Problem with Voltage Regulator? 14 2299 December 28, 2010
by BobaMosfet
Relay ratings 2 1898 December 24, 2010
by mongo
Do LEDs need a series resistor to limit the current? 27 14590 December 19, 2010
by mongo
Safe, Easy and Inexpensive way to Control AC Power 3 1855 December 17, 2010
by mongo
Power Rectifier 7 2108 December 15, 2010
by Hexorg
Limitation of a battery on the NerdKit 18 3453 December 14, 2010
by danuke
This a decent oscilloscope? 8 2344 December 14, 2010
by danuke
Do resistors in series really add up? 8 3206 December 14, 2010
by danuke
Falstad circuit emulator in Java 1 2558 December 09, 2010
by bretm
L293 H-Bridge 15 3148 December 05, 2010
by devinsbusiness
Spark when using a flyback diode 3 2968 December 04, 2010
by Wheresmind
INA118 -- Instrumentation Amplifier 8 3467 December 02, 2010
by BobaMosfet
angular position sensors and multiplexing 9 2649 November 29, 2010
by d3adl0ck3
Solar cells in parallell, but no additional amperage 11 3102 November 24, 2010
by BobaMosfet
Op-amp not working 6 3272 November 24, 2010
by BobaMosfet
Python questions 4 2802 November 21, 2010
by tkopriva
CE Amp design 5 1938 November 12, 2010
by BobaMosfet
Is it possible to re-use parts from household appliances? 5 2290 November 05, 2010
by mongo
Confirming MCU clock is functioning 8 1934 November 05, 2010
by Mujda
PC4 not working?! 8 1631 November 04, 2010
by hapshetsut
Amplifiers 4 1933 October 30, 2010
by Ralphxyz
supplying power and controlling 12V motors/fans 3 2625 October 12, 2010
by JerseyGun
Transistors Versus Diodes 4 2708 October 04, 2010
by Scythium
radio interference from NerdKit 11 1891 September 27, 2010
by Rob56
USB cable and Bluetooth dongle ... 9 5180 September 14, 2010
by Ralphxyz
solar project with light sensors 7 2443 September 11, 2010
by akajester
QFP and dreadboard 2 2168 September 02, 2010
by bretm
Getting power to the spinning part... 5 2354 August 31, 2010
by Hexorg
Need help with electronics using a op-amp 21 7877 August 30, 2010
by Ralphxyz
morse code decoder 2 2641 August 26, 2010
by jonathan_m
Connecting to Computer 3 2387 August 25, 2010
by awesome
555 astable on breadboard 12 3785 August 22, 2010
by mongo
Digital Sound Recording System Need Help!! 1 1970 August 20, 2010
by xc2rx
Use 4 digit LED display using fewest possible outputs 2 2358 August 19, 2010
by hevans
mosfet 3 1944 August 13, 2010
by hevans
Good material on learning electronics. 8 2118 August 11, 2010
by TexanBackpacker
MCU Clock Implementation 2 1779 August 06, 2010
by Rick_S
Servo causes MCU to reset 4 2659 August 02, 2010
by mrobbins
More batteries = more voltage? 3 2879 July 23, 2010
by mongo
Building a motor driver/ESC for AC motor. 10 5618 July 09, 2010
by Ralphxyz
Using LM741 amp in the Piezoelectric Sound Meter Project 7 3192 July 02, 2010
by mongo
Electro Cardio Gram 4 2624 June 21, 2010
by Ralphxyz
How do I read very low voltages with the Nerdkit please? (0 to 20.0 mV) 3 1848 June 12, 2010
by Wobbler
Voltage Regulator 20 3154 June 10, 2010
by Ralphxyz
Converting Battery power to Wall Plug-in... 2 3030 June 09, 2010
by mongo
Bipolar and MOSFET transistors 3 3218 June 09, 2010
by CyberGod
high side mosfet led multiplexing 5 3105 June 07, 2010
by gnkarn
tempsensor, LM34DZ, specs. 4 2317 June 07, 2010
by BobaMosfet
Some questions (temp sensor + button) 4 1822 June 06, 2010
by Kafke
TSSOP IC! 4 2226 June 03, 2010
by mrobbins
AVcc 2 2621 May 31, 2010
by hevans
Serial Comm. vs. Clock frequency 2 1996 May 31, 2010
by hevans
Cable Driver 2 1736 May 31, 2010
by mongo
Best 9V adapter to use 2 2043 May 28, 2010
by mongo
Unidirectional microphones 5 2270 May 27, 2010
by mongo
Servo question 3 1979 May 27, 2010
by Rick_S
Understanding the clock rate and the crystal 4 2305 May 27, 2010
by hevans
Generic 120VAC adapters (transformers) 7 2146 May 27, 2010
by DavidinLA
p-channel mosfet not turning off. 3 3243 May 23, 2010
by gnkarn
Getting my head around MOSFET's 9 5798 May 21, 2010
by hevans
Chinese Solenoid 15 2168 May 10, 2010
by treymd
avrisp mkii circuit 4 3259 May 09, 2010
by BobaMosfet
4 to 16 decoder 4 2051 May 09, 2010
by mongo
Powering Nerdkit using Super Capacitor 5 5342 May 07, 2010
by rajabalu21
Simple Power Switch 6 1911 May 05, 2010
by avicell
I can haz speed! 3 2159 April 27, 2010
by Hexorg
LCD backlight control via MCU 5 3333 April 27, 2010
by mjswan
Temperature sensor and buzzer 2 2726 April 21, 2010
by bretm
Help with choosing the right resistor 10 3322 April 18, 2010
by Farmerjoecoledge
Electric field in a resistor 6 4449 April 15, 2010
by bretm
Resistor 4 1757 April 15, 2010
by mongo
MCU digital input pins 3 1644 April 15, 2010
by CyberGod
The Complete Electronics Guide 1 2189 April 09, 2010
by Shanytc
usbasp ISP Programmer 7 7126 April 04, 2010
by ese
Fun with capacitors! (And a question or 2) 4 3711 March 28, 2010
by carlhako
Laptop ground safety question 3 2229 March 27, 2010
by ese
LM34 R-C Damper 5 2553 March 24, 2010
by BobaMosfet
NerdKits & USB 5 2239 March 23, 2010
by treymd
Jumpers/headers on the cheap 1 1874 March 23, 2010
by treymd
Stepper Motor - Stepping Stone 19 3500 March 23, 2010
by ese
constant system reset 3 1721 March 23, 2010
by treymd
Cheap Components (If you're willign to wait) 5 2214 March 22, 2010
by Phrank916
When powering an inverter, my LCD becomes blank 32 2947 March 17, 2010
by mongo
Another adventure with usbasp ISP - No signal on MISO? 3 2628 March 17, 2010
by Frozenlock
What is -VS? 6 3087 March 17, 2010
by Ralphxyz
Free MIT lectures! 1 3675 March 04, 2010
by treymd
Using MCU to connect two wires 3 2234 March 03, 2010
by nrotstan
Why no Capacitors used on Oscillator? 15 5457 March 02, 2010
by Chaosrider
Found part, but don't know if I can use it 3 1999 March 02, 2010
by Solorbob
Deciphering power resistors 11 2313 March 01, 2010
by BobaMosfet
Quick mosfet question -- grounding other battery? 3 1985 March 01, 2010
by nrotstan
Understanding LEDs 16 3533 March 01, 2010
by michaeldallas
What's the part I need? 5 1971 February 27, 2010
by Hexorg
How to convert 6V rechargeable NiCd to 5V regulated to power NerdKit 5 8050 February 23, 2010
by rajabalu21
Too much power? 14 2694 February 23, 2010
by BobaMosfet
5v to 3v using nerdkit parts? 16 3221 February 21, 2010
by peabo
Why is the crystal connected to GND in every schematics, but not in the NerdKit? 7 2582 February 20, 2010
by BobaMosfet
Piezo over-voltage 15 7628 February 18, 2010
by Rick_S
Serial port interface circuit 2 2942 February 17, 2010
by mongo
OBDII project 3 2046 February 17, 2010
by Mike
Voltage Divider, Do the resistors heat up? 9 3733 February 16, 2010
by treymd
usbasp ISP Programmer - MCU getting HOT! 17 3967 February 13, 2010
by BobaMosfet
Digital pots 5 2144 January 31, 2010
by sepeters
Problem with power from 8.6V wallwort - Help! 14 2229 January 25, 2010
by sepeters
YAWWT (Yet Another Wall Wart Thread) 10 3255 January 23, 2010
by treymd
How to stop a flip flop counter from... hum.... counting? 4 3142 January 19, 2010
by mongo
Anyone heard of this Budget Soldering Station? 5 4058 January 15, 2010
by Phrank916
Resistors and Ohms Law / Kirchoff's Laws 2 2378 January 09, 2010
by Rick_S
Power a piezo with a ceramic resonator 10 3848 January 08, 2010
by mrobbins
Using Piezzo Buzzer to produce Ultrasound? 4 5818 January 02, 2010
by toric5
Pin14 ..Malfuntion 25 2878 January 01, 2010
by Farmerjoecoledge
Run from USB? 3 2227 December 27, 2009
by jgauthier
Servo Signal Noise 2 1867 December 24, 2009
by BobaMosfet
MOSFET Problem on Constant current source 9 4327 December 21, 2009
by BobaMosfet
How to Buy a MultiMeter-- Lesson Learned 8 8038 December 10, 2009
by georgio
Relays and transistors 12 6108 December 09, 2009
by BobaMosfet
Continuity or just plain connect? 16 4984 December 09, 2009
by Rick_S
IR Detector 7 3753 November 23, 2009
by mrobbins
14.7465 to 20.0000 mhz 10 2807 November 19, 2009
by mikedoug
Debug with lcd 6 2629 November 16, 2009
by Farmerjoecoledge
ATMega328p processor 2 2426 November 15, 2009
by tech20
Understanding output pin characteristics 4 2174 November 13, 2009
by mrobbins
Schematics for LED Heart Project? 12 3934 November 12, 2009
by mikedoug
Current draw observations - driving LEDs with PINs 6 2442 November 07, 2009
by rusirius
How do you wire a transistor (2N7000 or 2N3904) 7 34409 October 30, 2009
by BobaMosfet
DIY header unit 2 2725 October 10, 2009
by rusirius
Thermostat Logging 6 3400 October 09, 2009
by luke
Understanding transistors 6 3704 October 08, 2009
by mikedoug
Power from USB: current limiter with an op-amp 8 7011 October 07, 2009
by mikedoug
Currant booster 3 1914 October 07, 2009
by Farmerjoecoledge
Witch two wires 5 2709 September 11, 2009
by mrobbins
Difference between ATmega8 and ATmega168? 4 7556 August 27, 2009
by hevans
Which LED? 14 2578 August 10, 2009
by BobaMosfet
Evil battery polarity +/- understanding the basics 7 3417 August 07, 2009
by mongo
pull up, pull down resistors 7 13922 August 05, 2009
by wayward
Why do we need a resistor going from the contrast pin to the ground? 8 7079 August 05, 2009
by BobaMosfet
Current vs Voltage on a circuit 17 4161 August 05, 2009
by BobaMosfet
Power MOSFET - Understanding and headaches 4 3730 July 07, 2009
by sector0
Reset switch for circuit 3 2407 June 27, 2009
by sector0
Online circuit simulator/intuition builder 2 25947 June 16, 2009
by TBNK
I don't understand the cap on the MC power supply 12 2727 June 12, 2009
by luisgarciaalanis
what resistors to use when connecting a new IC 5 2489 June 01, 2009
by luisgarciaalanis
wallwart safety? 4 2472 May 31, 2009
by luisgarciaalanis
Tired of draining 9V batteries? Cheap and easy to set up Lab DC Power Supply 2 3089 May 31, 2009
by luisgarciaalanis
Dimming LCD Problem 6 2406 May 06, 2009
by paulip

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Did you know that LEDs (light emitting diodes) only conduct current in one direction, like normal diodes? Learn more...