Circuits & Schematics: 10 - 9
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- I had an incredibly fun time putting this particular project together, and I hope you do too. This project shows how to build a talking clock with time temperature display + it includes several handy C functions you may find useful for other ...Oct 30, 2007
- .. yet one that you can easily build yourself. This LC Meter allows to measure incredibly small inductances starting from 10 nH to 1000 nH, 1 uH to 1000 uH, 1 mH to 100 mH and capacitance from 0.1 pF up to 900 nF. LC Meter's circuit uses an ...Oct 30, 2007
- .. during the boot up, if the mouse doesn’t properly respond in a few seconds it puts those lines back to low. About 10 mA of current can be pulled from these pins. But still it’s not solved yet the voltages on the com port are ...Oct 30, 2007
- .. that, your code is memorized in eeprom of PIC12F675, and you can only turn ON relay using this code. If you type false code 10 times, you will turn ON “alarm” relay. It is simple for everyone. Recognizing keys with a/d converter As ...Oct 31, 2007
- .. a spot of epoxy in it to keep it from making noise [...]. RM is a generic classification for this type of ferrite core, and 10 is the size. If you can't find one, you can use a clamshell open core such as sold by RadioShack for reducing ...Oct 31, 2007
- This cool device can be used in many areas. You can connect up to 8 different devices to 8 relays and control them remotely with IR transmitter. The whole system consist of two parts: IR transmitter and receiver with controlled relays. Transmitter ...Nov 5, 2007
- .. my circuit and a 9 volt battery while keeping the remote fully functional. The circuit parts: 1. Small circuit board 2. (1) 10 k variable resistor 3. (1) 555 Timer 4. (4) resistors. 470 ohm, 1 k, 560 ohm 5. (2) high speed switching diodes ...Nov 6, 2007
- .. to the unknown supply. Op amp IC2 scales the signal to achieve 3-mV resolution using the microcontroller’s built-in 10-bit ADC. The reference, op amp, and gain error introduce voltage offsets, which you can calibrate in software. The ...Nov 14, 2007
- Jon Dutra.. input is one fourth of the voltage that the load box is set to. With S1 open, the load-voltage adjust range will be from 10 V to 20 V, and with S1 closed it will be approximately 3.5 V 10 V. Low voltage operation could be improved by ...Jun 22, 2023
- .. marks from the threading process! This isn't exactly the easy way to build such a pen but it gets the idea across. A tiny 10 A 9 Volt alkaline battery was installed and the threaded nylon bushing was tightened. A little clear epoxy fills the ...Nov 29, 2007
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