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Basic Electronics

NerdKits » Forums » Basic Electronics (451 threads, 3929 posts)
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Would someone explain Proximity Sensor? 19 1140 May 04, 2015
by mongo
Need to replace Wall Watt 16 263 May 02, 2015
by Ralphxyz
Connecting Mosfet 10 753 April 10, 2015
by Noter
My new 3D Printer 44 14528 April 07, 2015
by Rick_S
AtMega 644 2 1095 September 06, 2014
by Rick_S
Switching between +5v and -5V 2 475 August 07, 2014
by Rick_S
Are there hobby printers for my microproccessor? 4 664 June 02, 2014
by JKITSON
Automated programming mode? 9 917 April 08, 2014
by Rick_S
Shuttering with the Nerdkit & piezo buzzer (Can't post in Support, gives error) 5 815 January 30, 2014
by BobaMosfet
Shuttering with the Nerdkit & piezo buzzer (Can't post in Support, gives error) 1 461 January 28, 2014
by lailai
What kind of error is this? 4 626 January 23, 2014
by Noter
How to double a DC voltage? 20 3335 January 12, 2014
by JKITSON
Is the code the driver? 2 503 January 12, 2014
by Ralphxyz
Miniature headers 6 736 January 01, 2014
by Ralphxyz
BLDC 8 658 December 23, 2013
by esoderberg
I need help finding a terminal. 17 1071 November 26, 2013
by Rick_S
GLCD SPI problems 14 1802 November 10, 2013
by andyi
Moving on... 7 876 November 08, 2013
by Pr0ject
Power supply questions 4 1061 October 31, 2013
by sask55
OLED 4 703 October 29, 2013
by esoderberg
Thermocouple wiring?? 19 2726 September 22, 2013
by sask55
Opto Interrupter once again 14 1688 September 19, 2013
by scootergarrett
FFC/FPC connection ideas? 4 786 September 10, 2013
by Ralphxyz
A3977 Stepper Motor Driver 42 3424 September 02, 2013
by Ralphxyz
USB cable specifications 7 847 August 29, 2013
by Noter
Help with reading UART Stream on mac 9 848 August 27, 2013
by Affarram
XMEGA Breakout 8 920 August 26, 2013
by JKITSON
Can someone help me with LDOs? 5 600 August 21, 2013
by BobaMosfet
lower voltage of sensor output LM335 5 890 August 20, 2013
by Osarus
TQFP ATmega 168 capacitors 6 890 August 01, 2013
by scootergarrett
Stepper Motor Programming 154 4517 July 21, 2013
by sask55
Low Voltage Level Translator That Fits the MCU and Breadboard 63 4687 June 18, 2013
by Noter
Two Wrongs Make it Right 3 753 May 22, 2013
by meltbox360
accurate time for a real time clock 5 992 April 08, 2013
by pcbolt
Using diode to drop voltage 12 17177 March 27, 2013
by Ralphxyz
Cannot understand the pins 3 615 March 27, 2013
by oshjdf
Since it is kinda slow around here I thought I'd ask .... 6 812 March 15, 2013
by sask55
What is the purpose of 1000 ohm resistor for LCD's pin 3? 10 1442 March 14, 2013
by mongo
Current vs Voltage 8 1205 March 14, 2013
by sask55
Control LED Stripes with 2N7000 MOSFET 3 1038 March 09, 2013
by lnino
Electric current 2 655 March 08, 2013
by Ralphxyz
How to power up Sim908 module? 4 2218 March 07, 2013
by Ralphxyz
Limiting battery discharge? 12 1543 March 03, 2013
by mongo
feeding a 7805 with 24VDC for <25mA output? 11 1506 February 28, 2013
by BobaMosfet
Control electronic door opener 15 1015 February 24, 2013
by lnino
Relay Question 27 3065 February 19, 2013
by Noter
Rotary Encoder how to?? 21 1916 February 15, 2013
by BobaMosfet
Unipolar Stepper motor with ULN2003A, 4 1089 February 11, 2013
by Ralphxyz
Introductory circuit design books 2 1333 January 30, 2013
by pcbolt
Anyone know how to program an 8052 MCU? 8 1033 January 03, 2013
by BobaMosfet
Higher power supplies with ATMega168 (running higher voltage devices with lower powered ground) 4 1023 December 30, 2012
by BobaMosfet
edX Free MIT online course 4 1334 December 22, 2012
by pcbolt
handling microprocessor and static eletricity 22 1029 December 18, 2012
by JKITSON
Voltage Divider (Resistors) 9 1376 December 17, 2012
by GenHornet18
iphone-controlled R/C car project 2 810 November 26, 2012
by JimFrederickson
Wire broke off in LCD pin 6 783 November 26, 2012
by gsjbjt
Where to buy individual oscillators 8 812 November 26, 2012
by Pew446
Need help using a 5v relay to trip a 12v relay 9 3859 November 18, 2012
by carlhako
SPI slave clock 6 1047 October 27, 2012
by Ralphxyz
Flow of Electricity through this circuit 8 854 October 26, 2012
by RogerFL
Why pick a crystal frequency of 14.7456 MHz? 16 12735 October 23, 2012
by Noter
NPN circuit connection quandry 4 1141 September 24, 2012
by edb
Simple I/O circuit 4 969 September 23, 2012
by wadaltmon
Flow of Electricity through this circuit 1 719 September 21, 2012
by Davda
Flow of Electricity through this circuit 1 660 September 21, 2012
by Davda
LED - Common Anode 8 Segment Display 13 1851 September 20, 2012
by pcbolt
Can I Power the ATmega168 with 3.3 V? 4 997 September 20, 2012
by karam
Measuring PWM Duty Cycle 6 2236 September 13, 2012
by dan_engbers
Electronics simulation 8 1247 August 31, 2012
by Chris100
LED Sign Help - How to control words 26 2628 August 27, 2012
by Rick_S
Help me on my learning path please :) 4 951 August 20, 2012
by rblalock
louder sound 2 776 August 18, 2012
by mongo
connector or cable for LCD display? 4 944 August 13, 2012
by missle3944
Powering L.E.Ds 5 948 August 09, 2012
by BobaMosfet
Wires in U.K 5 1029 August 08, 2012
by mikey6879
Bluetooth Please HELP! 3 1065 July 29, 2012
by Ralphxyz
Stepper Motor Motor Speed Control 13 2327 July 25, 2012
by sask55
Anything wrong with adding a large bypass capacitor? 6 2509 July 25, 2012
by bretm
Stepper Motor Direction Control 12 1276 July 21, 2012
by live4the1
Using Usbasp for attiny25 36 12315 July 21, 2012
by lnino
um help 6 750 July 20, 2012
by Rick_S
Stepper Motor L298N/L297N controller 3 1072 July 18, 2012
by Ralphxyz
help me 11 1186 July 03, 2012
by Rick_S
Crystal Oscillator question 2 883 July 02, 2012
by pcbolt
This will lead to more questions, how to use 20 volt battery to power projects and motors? 9 1322 June 24, 2012
by Ralphxyz
HELP 3 821 June 24, 2012
by Ralphxyz
Controlling Stepper Motors 35 7167 June 21, 2012
by mcguinnessdr
Geomagnetic vectors with a magnetoresistive sensor? 1 822 June 19, 2012
by lcruz007
PT100 temperature sensor reading 1 1537 June 17, 2012
by RogerFL
Programmable current source 6 1428 June 14, 2012
by JamesFysh
Increase range of an IR LED. 4 1313 June 11, 2012
by mongo
HELP 6 934 June 11, 2012
by mikeduff76
Running motor through the mircocontroller 8 1168 June 09, 2012
by mongo
How can I detect the signal from a key fob? 15 10535 May 24, 2012
by Ralphxyz
i need a code 8 1256 May 15, 2012
by pcbolt
Clock Accuracy 30 4130 May 14, 2012
by HexManiac
Relays and Controlling them 9 1163 May 10, 2012
by sask55
Using Internal 8 MHz Oscillator 4 1384 May 09, 2012
by RogerFL
Powering your NerdKit 7 1100 April 27, 2012
by Ralphxyz
output pin is 2.5v when low 7 1014 April 27, 2012
by BobaMosfet
Lm317 vs lm317t 2 1571 April 26, 2012
by BobaMosfet
nOOb looking for additional explanation 6 1176 April 24, 2012
by pcbolt
Programs will not run 6 1081 April 16, 2012
by E2MicroRobots
CE EMITTER_BIAS CONFIGURATION 12 1315 April 10, 2012
by Ralphxyz
Anyone used a 2 x 20 LCD? Which one? 10 1147 April 09, 2012
by Ralphxyz
Path Lights controller 2 984 April 04, 2012
by pcbolt
Frequency Response and stability, how do you determine if your system is stable 7 1095 April 02, 2012
by Akeshish
Very fundamental problem of operating with out a ground?? 11 1290 April 02, 2012
by sask55
line-level output, regulator ICs and op-amps?? 3 1160 April 01, 2012
by JamesFysh
Question on LCD screen 5 1064 March 30, 2012
by billtaichi
Is this Capaciator Good 4 1049 March 29, 2012
by mongo
Oscilloscopes (for the umpteenth time) 5 2159 March 29, 2012
by mongo
Basic Electronics Tutorial to Complement Nerdkits? 5 1651 March 26, 2012
by Ralphxyz
PIR motion sensor to trigger home wireless camera problems 4 2278 March 23, 2012
by 6ofhalfdozen
Ground connector on power supplies?? 3 1187 March 15, 2012
by Ralphxyz
Why TC negative connected to ground 3 1169 March 15, 2012
by mongo
Digital servo issues! 9 1371 March 15, 2012
by Rick_S
Brushless motor control 16 1700 March 12, 2012
by hevans
Windows not detecting device 3 1002 March 10, 2012
by hevans
Voltage throught MCU 5 909 March 05, 2012
by Ralphxyz
Ignition Coil Driver 16 12625 March 02, 2012
by RevMoses
Rotary Encoder pinout (and other questions I am sure) 8 2940 March 02, 2012
by Ralphxyz
Why do you pass a MIC Vout through a capacitor? 12 3479 March 01, 2012
by hevans
Up and running... 3 868 March 01, 2012
by dvdsnyd
9v to vcc survivable? 5 1133 February 26, 2012
by RogerFL
Accurate AREF for accurate ADC voltage readings 4 1437 February 26, 2012
by carlhako
Problem with code (2 inputs) 12 1030 February 24, 2012
by Rick_S
programming lcd trubs 7 1074 February 19, 2012
by raccoons
17 super bright white LEDs at the same time...SAFE?! 5 1540 February 18, 2012
by Rick_S
Oscilloscope 15 2206 February 18, 2012
by Osarus
How far away can a LM34 be? 16 4529 February 14, 2012
by dcarter777
Need help understanding a relay schematic 4 2118 February 14, 2012
by Ralphxyz
It's true, we forget... 18 1223 February 12, 2012
by Farmerjoecoledge
Very Basic Batteries in a Series Question 12 3413 February 09, 2012
by mongo
Data transmission 3 1577 February 08, 2012
by amartinez
PowerLineCommunication(PLC) vs Wireless 3 1377 February 05, 2012
by mongo
CAPACITIVE POWER SUPPLY 6 2094 February 04, 2012
by met_fredrik
ADC reads fluctuating voltage when nothing is connected! 2 1077 February 03, 2012
by BobaMosfet
connencting two ics to port 3 921 January 31, 2012
by tchilzer2
H bridge questions 6 1204 January 27, 2012
by tchilzer2
Voltage Regulators and Efficiency... 3 1231 January 24, 2012
by JimFrederickson
Voltage Drop when LEDs Flash 8 1366 January 23, 2012
by Rocket_Man_Jeff
LED Array - Wall power problems 14 1389 January 19, 2012
by sask55
How to measure floating (isolated) high DC voltage? 5 2845 January 17, 2012
by jfbrink
Mysteries of Capaciators in Reverse 9 1350 January 15, 2012
by Rick_S
Source of power? 19 1343 January 13, 2012
by mongo
symbol defined please? 4 1457 January 13, 2012
by sonicgadgets
Best zero cross detection IC 14 7053 January 07, 2012
by met_fredrik
How hot is too hot for the voltage regulator 3 1143 January 06, 2012
by boxvic
Basic LED circuit properties 8 1290 January 06, 2012
by boxvic
Getting Started 3 1133 January 05, 2012
by Stretch
Source of randomness for the hardware RNG 20 1518 January 02, 2012
by bodangly
SMD reflow 16 1769 December 27, 2011
by boxvic
kirchhoff's voltage law... 3 1184 December 25, 2011
by jbolfiil
Phase Shifter or time delay circuit? 7 1535 December 23, 2011
by BobaMosfet
Potentiometer 8 1678 December 23, 2011
by huzbum
Fun with Op-Amps 3 1973 December 22, 2011
by treymd
Do I need an H-Bridge? 14 1443 December 19, 2011
by n1cl3
Need Diode Data Sheets 2 1236 December 07, 2011
by BobaMosfet
Odessy of the minds 5 1370 December 05, 2011
by BobaMosfet
Having trouble uploading my program keep getting this error: Any ideas anyone. Thanks 2 1017 November 27, 2011
by sazD
Initial Load 2 1317 November 27, 2011
by missle3944
Using pushbuttons to increment position of servo 4 1503 November 23, 2011
by SpaceGhost
Yellow USB wire problem 15 2208 November 22, 2011
by Ralphxyz
Speakers with LEDs that light with the music 4 1456 November 14, 2011
by mongo
Strange behaviour with a DC motor 18 4256 November 10, 2011
by jfbrink
Servo Squitter Project 13 1281 November 09, 2011
by Heed
how do i run a program 4 1081 November 08, 2011
by Heed
Help!!! my grades are in jeopordy 3 1174 November 07, 2011
by Heed
Motor control question 2 1113 November 04, 2011
by hevans
Help driving a high voltage Piezo 6 2810 November 02, 2011
by buffetrand
9V transformer more like ~15V 2 1289 October 31, 2011
by hevans
Tick Tock Clock question about which pins and long load times from DASA. 1 1173 October 25, 2011
by apphilosophy
Why is reversing polarity a bad thing? 26 23675 October 24, 2011
by glendon
Measuring Capacitance 9 2149 October 24, 2011
by Ralphxyz
9 VDC 1000mA to much? 4 1335 October 21, 2011
by mongo
Hardware/software oscilloscope? 7 1888 October 19, 2011
by cyberion
R-2R ladder using random crap resistors 25 7691 October 16, 2011
by sask55
RxD / TxD Questions 10 2524 October 13, 2011
by Twarter369
Basic Electrical Toggle Switch question.. 5 1394 October 07, 2011
by scottmc94
Piezo Buzzer - help 6 1355 October 03, 2011
by scottmc94
Program Upload Error with initialload 17 1053 September 30, 2011
by nerdgirl
I'm Curious About The Breadboard 2 1146 September 27, 2011
by BobaMosfet
Any games for Learning Electronics? 12 4405 September 21, 2011
by sask55
Help re-purposing A Palm M100 Portable Keyboard. 3 2062 September 18, 2011
by Twarter369
I just bought a Oscilloscope!! 57 16368 September 16, 2011
by dgikuljot
Digital Multimeter will not show resistance! 12 2373 September 16, 2011
by bretm
Something fast and with a lot of memory... 5 1137 September 16, 2011
by 6ofhalfdozen
595 Shift Array, BC337 Transistor and Solenoid 9 2842 September 14, 2011
by BobaMosfet
4 Transistor H-Bridge Fail 46 4768 September 10, 2011
by bretm
Nerdkit/Arduino with EL wire 34 4200 September 10, 2011
by Ralphxyz
Question about frequency and duty cycles on a multimeter 9 1360 September 01, 2011
by BobaMosfet
Dim LED 3 1145 August 23, 2011
by Rocket_Man_Jeff
Embedding Multi-Core Processors 17 1407 August 23, 2011
by Twarter369
Easy Transistor Question 4 1590 August 20, 2011
by jimmyw404
Daisy chaining MC74MC595 Shift Registers 13 2251 August 18, 2011
by Ralphxyz
Building a coil?? 12 2376 August 12, 2011
by Ralphxyz
Programming the micro-controller 9 1400 July 26, 2011
by Rick_S
Advice needed for further projects with my nerdkit 3 1197 July 22, 2011
by codenamejupiterx
more questions about tempsensor.c code 4 968 July 22, 2011
by codenamejupiterx
tempsensor.c code question 3 974 July 22, 2011
by codenamejupiterx
Which way does electricity flow? Positive-to-Negative or Vice Versa? 5 7743 July 22, 2011
by rboggs10
Converting input signal for ADC, impedance matching? 7 1729 July 20, 2011
by BobaMosfet
my lcd went blank except a little line that looks like a cursor 2 1191 July 20, 2011
by codenamejupiterx
Temperature project unclear explanation of error in uncompiled code 5 1220 July 20, 2011
by codenamejupiterx
make file errors on initialload.c 6 1191 July 17, 2011
by Ralphxyz
Error: "Maybe it isn't a butterfly/AVR109 but a AVR910 device?" 3 2423 July 17, 2011
by codenamejupiterx
the make file cant locate the libnerdkits 3 1156 July 17, 2011
by codenamejupiterx
avr macpack 3 1119 July 16, 2011
by codenamejupiterx
acd with 2 inputs? 18 1326 July 14, 2011
by Ralphxyz
Electro-magnetism. Concept check. 14 1283 July 13, 2011
by BobaMosfet
Battery clip wires 3 1081 July 10, 2011
by codenamejupiterx
Electronics advice needed 3 975 July 10, 2011
by codenamejupiterx
I cant get my lcd to work 5 1016 July 10, 2011
by codenamejupiterx
2-ROW LCD Only Displaying 2 Rows of 8 dark blocks.... 3 1299 July 10, 2011
by gcharris
Help Please **** I can only use a 9v battrey sent by Nerdkits 35 1692 July 03, 2011
by wintersdb
Switching Ground with a transistor 12 6159 June 28, 2011
by dgikuljot
Powering I2C remote device? 3 1292 June 27, 2011
by Ralphxyz
rechargeable battery for project 2 1254 June 23, 2011
by BobaMosfet
TTL ULN2038 Question 40 2483 June 17, 2011
by Rick_S
Circuit board for monophonic signal generator 1 1469 June 15, 2011
by kayrock
4 Channel Voltage and Current Monitor 3 1407 June 15, 2011
by gcharris
"-U": The system could not find the file specified ERROR 6 1364 June 08, 2011
by pgdsmca
LCD Only showing 2 black Lines ????? 7 1491 June 06, 2011
by mja
A couple of questions 3 1113 June 06, 2011
by Ralphxyz
How much should I strip? 3 1091 June 01, 2011
by mongo
How do I interface a Parallel-In Serial Out Shift Register with my microcontroller? 8 1537 June 01, 2011
by hevans
Motor Control/MCU power bus 5 1221 May 30, 2011
by esoderberg
How do I use two Serial or Parallel-in/serial out shift registers together? 2 1542 May 29, 2011
by Rick_S
Digital Input Question 4 1218 May 28, 2011
by frankdwest
PCB arrived 20 1298 May 25, 2011
by Ralphxyz
Save state data to EEPROM with power cutoff capacitor value? 4 1762 May 24, 2011
by gcharris
Calculating bypass capacitor 6 7133 May 19, 2011
by Ralphxyz
What shift register should I buy? 4 1790 May 09, 2011
by Noter
IR current 6 1581 May 05, 2011
by missle3944
Turning on COmputer without Switch 39 2114 May 04, 2011
by hariharan
Heat sensors 21 2004 May 04, 2011
by Hexorg
error 1 2 1280 May 02, 2011
by hevans
Transistor vs mosfet 13 5123 May 01, 2011
by Noter
PCB trace width calculator 3 2246 April 24, 2011
by esoderberg
OLED display 10 1659 April 23, 2011
by Rick_S
Power Supplies 17 2634 April 22, 2011
by BobBolinger
LCD & battery&USB 4 1114 April 22, 2011
by Ralphxyz
Amperage Multiplyer 6 1493 April 21, 2011
by Rick_S
ADC Theremin Help... 1 1196 April 20, 2011
by jasongillikin
RF and oscoliscope 2 1593 April 19, 2011
by mongo
Connecting to external control voltages 4 1416 April 19, 2011
by bretm
IR current question 7 1281 April 18, 2011
by BobaMosfet
What is the purpose of the resistor in this power supply? 4 1807 April 17, 2011
by rajabalu21
Not meeting input Voltage Threshold, amplify? and Do I need a buffer? (Button input, LED output) 14 1625 April 14, 2011
by bretm
USB cable issues (maybe fried) 7 1500 April 10, 2011
by uml_12
Basic projects 3 1353 April 09, 2011
by mongo
REFLOW oven 22 3053 April 07, 2011
by Rick_S
Why 5 volts is most widely used? 10 5265 April 07, 2011
by bretm
unexpected MCU rebooting 82 2791 April 05, 2011
by sask55
REFLOW Soldering 3 1693 April 05, 2011
by Ralphxyz
Setting baudrate for bluetooth connectivity 1 1494 March 31, 2011
by AbhishekBhat
Oscilation circuits 8 2973 March 30, 2011
by bretm
Black Display on LCD 6 1481 March 28, 2011
by Druidman
32kHz clock 2 1414 March 28, 2011
by Rick_S
Debouncing and External Interrupts 9 4968 March 27, 2011
by Mujda
Geiger Counter Schematic Help 3 4587 March 18, 2011
by mongo
Thermocouples, relays, and fun!!! 12 2456 March 16, 2011
by mongo
LCD problem 3 1397 March 08, 2011
by Ralphxyz
How do I determine the throw characteristics of a Relay 8 2006 March 08, 2011
by bretm
ATMega168 Microcontroller simple relay with timer examIple 3 2069 March 01, 2011
by Rick_S
Why does my LED light if i so much as get near the circuit 3 1379 February 26, 2011
by nckomodo
Using a 555 IC instead of a Crystal Oscillator? 6 2578 February 26, 2011
by Ralphxyz
Pushbutton on off code 3 1789 February 26, 2011
by amartinez
Why does my led light without the battery? 2 1959 February 26, 2011
by hevans
24 volt DC to 12 volt DC 6 5646 February 25, 2011
by JKITSON
How to Switch a Solenoid? 11 3431 February 23, 2011
by Ralphxyz
Farads and Capacitors 8 2587 February 23, 2011
by Ralphxyz
How much to switch a relay? 3 3525 February 19, 2011
by Lusitania
My first Impression 6 1552 February 16, 2011
by devinsbusiness
Understanding battery life 3 2418 February 16, 2011
by devinsbusiness
Power Supply for LED's 4 2398 February 13, 2011
by sask55
Using Devices With Different Voltages 11 1850 February 05, 2011
by BobaMosfet
High voltage lines 26 2934 February 02, 2011
by mongo
USB 3 1393 February 02, 2011
by Jalex
Ultrasonic thickness gauge with the NerdKit; interference form capacitance? 12 1967 February 02, 2011
by Jalex
Alternating LED circuit 4 1913 February 02, 2011
by Rick_S
Powering a Stepper Motor 5 2492 January 31, 2011
by il1019
Affordable oscilloscopes 43 8287 January 27, 2011
by BStory
"And"gate unfinished thought 2 1281 January 27, 2011
by Hexorg
replace MCU? 30 5197 January 26, 2011
by Jalex
Using a thermometer with the nerdkits microcontroller. 17 1818 January 25, 2011
by Ralphxyz
Multimeter! 12 3387 January 25, 2011
by Jalex
Generate a steady DC level from PWM signal 9 2363 January 25, 2011
by Jalex
My LED Cube so far 25 5537 January 24, 2011
by Keyster
what is a butterfly in hardwaring 3 2191 January 22, 2011
by Rick_S
USing Calculator as Keypad 5 1756 January 18, 2011
by dgikuljot
Counting 5 1185 January 18, 2011
by Jalex
How do I calculate the cutoff frequency...? 3 3901 January 17, 2011
by bretm
Programming 5 1752 January 14, 2011
by Ralphxyz
Induction loop actuator 7 2145 January 11, 2011
by Yourself
Begining 7 1861 January 09, 2011
by Jalex
Is Single-bit Memory Cell Diagram on Pg 14 Correct? 6 2258 January 09, 2011
by pacnwdude
uninterrupted power supply for NerdKit project 4 2057 January 09, 2011
by mrobbins
RFB12B ... what are all this terms? >_< 5 1360 January 09, 2011
by mrobbins
UART operating at 3.3V 1 1751 January 06, 2011
by Mujda
Data input voltage 6 2000 January 03, 2011
by Rick_S
MOSFET Question 7 1926 December 31, 2010
by Keyster
Transistor as a switch 5 1741 December 29, 2010
by Hexorg
Resistors 5 2228 December 28, 2010
by georgio
Problem with NPN Phototransistor 16 5243 December 28, 2010
by Ralphxyz
Problem with Voltage Regulator? 14 1858 December 28, 2010
by BobaMosfet
Relay ratings 2 1547 December 24, 2010
by mongo
Do LEDs need a series resistor to limit the current? 27 12304 December 19, 2010
by mongo
Safe, Easy and Inexpensive way to Control AC Power 3 1563 December 17, 2010
by mongo
Power Rectifier 7 1723 December 15, 2010
by Hexorg
Limitation of a battery on the NerdKit 18 2864 December 14, 2010
by danuke
This a decent oscilloscope? 8 1976 December 14, 2010
by danuke
Do resistors in series really add up? 8 2606 December 14, 2010
by danuke
Falstad circuit emulator in Java 1 2125 December 09, 2010
by bretm
L293 H-Bridge 15 2627 December 05, 2010
by devinsbusiness
Spark when using a flyback diode 3 2530 December 04, 2010
by Wheresmind
INA118 -- Instrumentation Amplifier 8 2895 December 02, 2010
by BobaMosfet
angular position sensors and multiplexing 9 2225 November 29, 2010
by d3adl0ck3
Solar cells in parallell, but no additional amperage 11 2451 November 24, 2010
by BobaMosfet
Op-amp not working 6 2532 November 24, 2010
by BobaMosfet
Python questions 4 2412 November 21, 2010
by tkopriva
CE Amp design 5 1594 November 12, 2010
by BobaMosfet
Is it possible to re-use parts from household appliances? 5 1960 November 05, 2010
by mongo
Confirming MCU clock is functioning 8 1585 November 05, 2010
by Mujda
PC4 not working?! 8 1265 November 04, 2010
by hapshetsut
Amplifiers 4 1594 October 30, 2010
by Ralphxyz
supplying power and controlling 12V motors/fans 3 2211 October 12, 2010
by JerseyGun
Transistors Versus Diodes 4 2348 October 04, 2010
by Scythium
radio interference from NerdKit 11 1566 September 27, 2010
by Rob56
USB cable and Bluetooth dongle ... 9 3854 September 14, 2010
by Ralphxyz
solar project with light sensors 7 2099 September 11, 2010
by akajester
QFP and dreadboard 2 1798 September 02, 2010
by bretm
Getting power to the spinning part... 5 1989 August 31, 2010
by Hexorg
Need help with electronics using a op-amp 21 5682 August 30, 2010
by Ralphxyz
morse code decoder 2 2301 August 26, 2010
by jonathan_m
Connecting to Computer 3 2058 August 25, 2010
by awesome
555 astable on breadboard 12 3234 August 22, 2010
by mongo
Digital Sound Recording System Need Help!! 1 1605 August 20, 2010
by xc2rx
Use 4 digit LED display using fewest possible outputs 2 2045 August 19, 2010
by hevans
mosfet 3 1621 August 13, 2010
by hevans
Good material on learning electronics. 8 1751 August 11, 2010
by TexanBackpacker
MCU Clock Implementation 2 1446 August 06, 2010
by Rick_S
Servo causes MCU to reset 4 2220 August 02, 2010
by mrobbins
More batteries = more voltage? 3 2261 July 23, 2010
by mongo
Building a motor driver/ESC for AC motor. 10 4500 July 09, 2010
by Ralphxyz
Using LM741 amp in the Piezoelectric Sound Meter Project 7 2728 July 02, 2010
by mongo
Electro Cardio Gram 4 2196 June 21, 2010
by Ralphxyz
How do I read very low voltages with the Nerdkit please? (0 to 20.0 mV) 3 1523 June 12, 2010
by Wobbler
Voltage Regulator 20 2613 June 10, 2010
by Ralphxyz
Converting Battery power to Wall Plug-in... 2 2685 June 09, 2010
by mongo
Bipolar and MOSFET transistors 3 2681 June 09, 2010
by CyberGod
high side mosfet led multiplexing 5 2615 June 07, 2010
by gnkarn
tempsensor, LM34DZ, specs. 4 1897 June 07, 2010
by BobaMosfet
Some questions (temp sensor + button) 4 1474 June 06, 2010
by Kafke
TSSOP IC! 4 1877 June 03, 2010
by mrobbins
AVcc 2 2234 May 31, 2010
by hevans
Serial Comm. vs. Clock frequency 2 1692 May 31, 2010
by hevans
Cable Driver 2 1440 May 31, 2010
by mongo
Best 9V adapter to use 2 1692 May 28, 2010
by mongo
Unidirectional microphones 5 1918 May 27, 2010
by mongo
Servo question 3 1629 May 27, 2010
by Rick_S
Understanding the clock rate and the crystal 4 1921 May 27, 2010
by hevans
Generic 120VAC adapters (transformers) 7 1722 May 27, 2010
by DavidinLA
p-channel mosfet not turning off. 3 2635 May 23, 2010
by gnkarn
Getting my head around MOSFET's 9 4652 May 21, 2010
by hevans
Chinese Solenoid 15 1793 May 10, 2010
by treymd
avrisp mkii circuit 4 2849 May 09, 2010
by BobaMosfet
4 to 16 decoder 4 1721 May 09, 2010
by mongo
Powering Nerdkit using Super Capacitor 5 3961 May 07, 2010
by rajabalu21
Simple Power Switch 6 1437 May 05, 2010
by avicell
I can haz speed! 3 1711 April 27, 2010
by Hexorg
LCD backlight control via MCU 5 2804 April 27, 2010
by mjswan
Temperature sensor and buzzer 2 2332 April 21, 2010
by bretm
Help with choosing the right resistor 10 2652 April 18, 2010
by Farmerjoecoledge
Electric field in a resistor 6 3430 April 15, 2010
by bretm
Resistor 4 1458 April 15, 2010
by mongo
MCU digital input pins 3 1341 April 15, 2010
by CyberGod
The Complete Electronics Guide 1 1883 April 09, 2010
by Shanytc
usbasp ISP Programmer 7 6077 April 04, 2010
by ese
Fun with capacitors! (And a question or 2) 4 3299 March 28, 2010
by carlhako
Laptop ground safety question 3 1859 March 27, 2010
by ese
LM34 R-C Damper 5 2160 March 24, 2010
by BobaMosfet
NerdKits & USB 5 1889 March 23, 2010
by treymd
Jumpers/headers on the cheap 1 1539 March 23, 2010
by treymd
Stepper Motor - Stepping Stone 19 2958 March 23, 2010
by ese
constant system reset 3 1422 March 23, 2010
by treymd
Cheap Components (If you're willign to wait) 5 1826 March 22, 2010
by Phrank916
When powering an inverter, my LCD becomes blank 32 2538 March 17, 2010
by mongo
Another adventure with usbasp ISP - No signal on MISO? 3 2264 March 17, 2010
by Frozenlock
What is -VS? 6 2270 March 17, 2010
by Ralphxyz
Free MIT lectures! 1 3302 March 04, 2010
by treymd
Using MCU to connect two wires 3 1880 March 03, 2010
by nrotstan
Why no Capacitors used on Oscillator? 15 4563 March 02, 2010
by Chaosrider
Found part, but don't know if I can use it 3 1698 March 02, 2010
by Solorbob
Deciphering power resistors 11 1838 March 01, 2010
by BobaMosfet
Quick mosfet question -- grounding other battery? 3 1688 March 01, 2010
by nrotstan
Understanding LEDs 16 3032 March 01, 2010
by michaeldallas
What's the part I need? 5 1601 February 27, 2010
by Hexorg
How to convert 6V rechargeable NiCd to 5V regulated to power NerdKit 5 6824 February 23, 2010
by rajabalu21
Too much power? 14 2275 February 23, 2010
by BobaMosfet
5v to 3v using nerdkit parts? 16 2833 February 21, 2010
by peabo
Why is the crystal connected to GND in every schematics, but not in the NerdKit? 7 2109 February 20, 2010
by BobaMosfet
Piezo over-voltage 15 5826 February 18, 2010
by Rick_S
Serial port interface circuit 2 2520 February 17, 2010
by mongo
OBDII project 3 1727 February 17, 2010
by Mike
Voltage Divider, Do the resistors heat up? 9 2991 February 16, 2010
by treymd
usbasp ISP Programmer - MCU getting HOT! 17 3372 February 13, 2010
by BobaMosfet
Digital pots 5 1776 January 31, 2010
by sepeters
Problem with power from 8.6V wallwort - Help! 14 1887 January 25, 2010
by sepeters
YAWWT (Yet Another Wall Wart Thread) 10 2796 January 23, 2010
by treymd
How to stop a flip flop counter from... hum.... counting? 4 2551 January 19, 2010
by mongo
Anyone heard of this Budget Soldering Station? 5 3369 January 15, 2010
by Phrank916
Resistors and Ohms Law / Kirchoff's Laws 2 2020 January 09, 2010
by Rick_S
Power a piezo with a ceramic resonator 10 3201 January 08, 2010
by mrobbins
Using Piezzo Buzzer to produce Ultrasound? 4 4767 January 02, 2010
by toric5
Pin14 ..Malfuntion 25 2368 January 01, 2010
by Farmerjoecoledge
Run from USB? 3 1864 December 27, 2009
by jgauthier
Servo Signal Noise 2 1532 December 24, 2009
by BobaMosfet
MOSFET Problem on Constant current source 9 3789 December 21, 2009
by BobaMosfet
How to Buy a MultiMeter-- Lesson Learned 8 6714 December 10, 2009
by georgio
Relays and transistors 12 5606 December 09, 2009
by BobaMosfet
Continuity or just plain connect? 16 4396 December 09, 2009
by Rick_S
IR Detector 7 2961 November 23, 2009
by mrobbins
14.7465 to 20.0000 mhz 10 2408 November 19, 2009
by mikedoug
Debug with lcd 6 2222 November 16, 2009
by Farmerjoecoledge
ATMega328p processor 2 2112 November 15, 2009
by tech20
Understanding output pin characteristics 4 1795 November 13, 2009
by mrobbins
Schematics for LED Heart Project? 12 3473 November 12, 2009
by mikedoug
Current draw observations - driving LEDs with PINs 6 2092 November 07, 2009
by rusirius
How do you wire a transistor (2N7000 or 2N3904) 7 26937 October 30, 2009
by BobaMosfet
DIY header unit 2 2371 October 10, 2009
by rusirius
Thermostat Logging 6 2824 October 09, 2009
by luke
Understanding transistors 6 3283 October 08, 2009
by mikedoug
Power from USB: current limiter with an op-amp 8 6311 October 07, 2009
by mikedoug
Currant booster 3 1597 October 07, 2009
by Farmerjoecoledge
Witch two wires 5 2278 September 11, 2009
by mrobbins
Difference between ATmega8 and ATmega168? 4 6036 August 27, 2009
by hevans
Which LED? 14 2241 August 10, 2009
by BobaMosfet
Evil battery polarity +/- understanding the basics 7 2995 August 07, 2009
by mongo
pull up, pull down resistors 7 13003 August 05, 2009
by wayward
Why do we need a resistor going from the contrast pin to the ground? 8 6088 August 05, 2009
by BobaMosfet
Current vs Voltage on a circuit 17 3657 August 05, 2009
by BobaMosfet
Power MOSFET - Understanding and headaches 4 3203 July 07, 2009
by sector0
Reset switch for circuit 3 2055 June 27, 2009
by sector0
Online circuit simulator/intuition builder 2 24793 June 16, 2009
by TBNK
I don't understand the cap on the MC power supply 12 2310 June 12, 2009
by luisgarciaalanis
what resistors to use when connecting a new IC 5 2115 June 01, 2009
by luisgarciaalanis
wallwart safety? 4 2128 May 31, 2009
by luisgarciaalanis
Tired of draining 9V batteries? Cheap and easy to set up Lab DC Power Supply 2 2706 May 31, 2009
by luisgarciaalanis
Dimming LCD Problem 6 2063 May 06, 2009
by paulip

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Did you know that 20 LEDs can be controlled from 11 microcontroller pins, to make a twinkling heart outline? Learn more...