The new secret schematics vault is here! Click any of the quick links below to access area of interest:
Alarms and security related schematics
Audio power amplifiers
Audio preamplifiers
Automative and car related schematics
Data acquisition and data logging schematics
Games and fun stuff (schematics)
Laser related power supplies and data transmission
Medical and health related schematics
Microcontroller based schematics
Misc audio (also see Music, Amplifiers, Preamp)
Model and remote control schematics
Motor and general control schematics
Music related schematics (also see Audio)
PDA interfaces and related schematics
Power supplies and control schematics
Radio-frequency schematics (also see Transmitters)
Telephone and intercom related schematics
Timing, oscillators etc. (schematics)
Direct links to schematics are listed below, just click to access the project and please [let us know] if there’s a broken link. Have fun!
Alarms and security related schematics
Universal Stereo RDS FM transmitter board with 15W or 25W of output power, controlled with LCD display. With SWR protection and temperature protection. Excellent sound, fantastic range.
- Wire loop alarm
- Door knob alarm (PDF)
- Water seepage alarm (PDF)
- Micro-power over temperature alarm (PDF)
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15W to 100W FM transmitter with DSP stereo and RDS
Audio power amplifier schematics
PC FM transmitter card for your PC
Insert this into your PC (PCI slot) and turn your PC into a local radio station. Play music to your community, start your own small FM radio station, also great for outdoor cinema, advertising, realltor radio, convenient wireless translation, guided tours…
- 20W Amplifier
- 50W Amplifier
- Spatial Distortion Reduction Headphone Amp
- HeadBanger Headphone Am
- 50W audio power amplifier
- Bi-Directional 2.4 GHz One Watt Amplifier
- Bi-Directional 900Mhz One Watt Amplifier
- 20 Watt GaAaFET Power on 2.3 GHz
- 1 Watt 2.3 GHz RF Amplifier Using a MRF2001
- 2.3 GHz Power Amplifiers
- 2304 and 3456 MHz Power Amplifiers
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RigExpert AA-650 ZOOM antenna analyzer, tune any antenna in seconds…
- Low impedance microphone amplifier
- Balanced microphone preamp
- Audio preamp
- Vacuum Tube Microphone Preamp
- FET Preamp Cable
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Automative, car and motorcycle schematics
- Portable CD Player Adapter For Car
- Car battery charger
- Wireless Auto Tachometer
- Simple car battery charger
15W to 100W FM transmitter with DSP stereo and RDS
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Data acquisition and data logging schematics
Universal Stereo RDS FM transmitter board with 15W or 25W of output power, controlled with LCD display. With SWR protection and temperature protection. Excellent sound, fantastic range.
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Games and fun stuff (schematics)
Setting up drive in cinema FM radio by PCS Electronics
- Dreamcast PC serial adapter
- Pine Racecar Victory Judge
- Interfacing Sony control stick to Empeg
- GameBoy Schematic
- GameBoy LCD schematic
- GameBoy Power & Cartridge schematic
- GameBoy ROM+RAM+MBC1 Cart Schematic
- GameBoy MBC1 circuit equivalent
- Super GameBoy schematic
- Dreamcast interface
- DIT shutterglasses controller
CyberMaxFM+ SE+ V3 1000W FM transmitter package with antenna and coaxial cable
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Laser related power supplies and data transmission
15W to 100W FM transmitter with DSP stereo and RDS
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LED related schematics
Universal Stereo RDS FM transmitter board with 15W or 25W of output power
- , all connections explained
Universal Stereo RDS FM transmitter board with 15W or 25W of output power, controlled with LCD display. With SWR protection and temperature protection. Excellent sound, fantastic range.
Back to top.
Back to top.
Medical and health related schematics
Setting up drive in cinema FM radio by PCS Electronics
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Microcontroller based schematics
- PIC16F84 line following robot
- PIC16C505 IR / wireless remote control
- Automatic door opener with PIC12C508
- RS485-like multi-drop bus with half duplex serial protocol
- Programmer PIC16F84,12C50x and EEPROM 24Cxx
- PIXpand
- POCSAG encoder/decoder
- Serial to parallel converter using the AT89C2051
- AT89C2051 serial COMs to LED driver
- RigExpert AA-3000 Antenna Analyzer
RigExpert AA-3000 antenna analyzer covering up to 3000MHz with large colour LCD display!
- 8088 maximum mode SBC
- EZ80 single board computer schematic (Z80)
- 8051 Development System Circuit Board
- Long-period watchdog timer
- PIC Project #1 – RS232 to I2C Interface
- Galvanic decoupling of I2C bus
- AVR-Based Serial Port IR Receiver
- Victoria TAFE programmer (based on AT89C2051)
- JDM programmer
Setting up drive in cinema FM radio by PCS Electronics
PC FM transmitter card for your PC
Insert this into your PC (PCI slot) and turn your PC into a local radio station. Play music to your community, start your own small FM radio station, also great for outdoor cinema, advertising, realltor radio, convenient wireless translation, guided tours…
- PIC micro LED projects
- PS/2 keyboard keystroke logger based on Atmel 89C2051
- Microcontroller sensor and actuator interfaces
- Giant money counter (PIC16F876)
- PIC demo board
- PIC LCD and Keypad driver
- PIC micro to ISA bus interface
- Microchip PIC ICD (in-circuit debugger)
- Tony Nixons Pocket Programmer (PIC
- PicoWeb V5.1 (AT90S8515) tiny web server
- Atmel 89C2051 In-Circuit Programmer Schematic
- 8051 Development System Circuit Board
- Microprocessor using Xilinx FPGA
- I2C LCD interface
- AFSK 1200 Modem based on PIC16C620
- PicCon – Hidden Radio Transmitter Controller
- PIC16F84 tone generator with source code
- PIC16F84 tone generator
- PIC16F84 tone generator (6-Bit)
- Camera remote control system using Basic Stamp
- Microprocessor RS-232 Reset
- AT90S8515 experimenter board
15W to 100W FM transmitter with DSP stereo and RDS
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Various audio schematics (also see Music, Amplifiers, Preamp)
Building amplifiers, transmitters, filters or other RF equipment? You will also need these:
