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Digital Encoder with PIC16F57 – Circuit Schematic
Digital Encoder with PIC16F57
This encoder can transmit the state of up to 16 TTL digital inputs using an RF or infrared transmitter. When enabled, the included modulator automatically gener...
PIC Light Chaser with PIC16C84 – Circuit Schematic
PIC Light Chaser with PIC16C84
The circuit this month is a simple 8 light chaser built around a PIC. This will demonstrate how easy it is to program a PIC and to utilize it in a circuit. The ...
Ultrasonic Parking controller – Circuit Schematic
Ultrasonic Parking controller
A series of five short pulses blasted by the microcontroller only has 5V amplitude, which will be attenuated down to less than 20 mV when received by the receiv...
Control System for Cold Atom Experiments – Circuit Schematic
Control System for Cold Atom Experiments
We have developed a powerful yet inexpensive and easy to construct experiment control system. The construction of the system together with the control software ...
PIC Programmer II – Circuit Schematic
PIC Programmer II
C1 is a charge pump capacitor*. This works voltage doubler. When TxD is negative voltage, C1 is charged through D7 from GND. If TxD carries out turn-on, since i...
Digital Clock with 6 nixies – Circuit Schematic
Digital Clock with 6 nixies
The clock will have 6 digits and time setting will be done by means of a few buttons. I will try to use the most common types from widely used microcontroller f...
Programmable frequency meter – Circuit Schematic
Programmable frequency meter
The basic idea comes from the AN592 Microchip application note: "Frequency counter using PIC16C5x". where you may find a simple software wich implements a fre...
Frequency Locked Loop for HF – Circuit Schematic
Frequency Locked Loop for HF
The principle of operation is quite simple, a counter measures the VFO frequency, the new reading is compared with the previously stored value and an adequate ...
PIC Analogue Synthesizer – Circuit Schematic
PIC Analogue Synthesizer
A real analog synthesizer to build using easy to get components, capable of a wide range of sounds. The two oscillators can be detuned for that classic synth so...
PIC Analogue Synthesizer – Circuit Schematic
PIC Analogue Synthesizer
A real analog synthesizer to build using easy to get components, capable of a wide range of sounds. The two oscillators can be detuned for that classic synth so...
Incect Robot circuit (PIC16F818) – Circuit Schematic
Incect Robot circuit (PIC16F818)
Very little extra circuitry is needed to do both forword and backword walking sequences along with a few other tricks. The PIC16F818 has a lot of features that ...
PIC Programmer – Circuit Schematic
PIC Programmer
This programmer requires only a basic terminal program capable of uploading an ascii PIC HEX file. It does not matter what operating system or computer (MAC, Wi...
PIC16F627A Touchpad circuit – Circuit Schematic
PIC16F627A Touchpad circuit
This board layout was created using the SOIC version of a PIC16F627A without drawing the usual schematic first. Most of the part values are etched on the Layou...
AVR Programmer with ATMega8-16 – Circuit Schematic
AVR Programmer with ATMega8-16
This simple AVR Programmer will allow you to painlessly transfer hex programs to most ATMEL AVR microcontrollers without sacrificing your budget and time. It is...
Microcontrolled Lab Power Supply – Circuit Schematic
Microcontrolled Lab Power Supply
This unit delivers 0 to 20 volts at up to 4 amps in 0.1 volt increments. The entire device runs on a PIC16F870 (about $3 in small quantities). This is basical...
Spider robot with PIC16F84 – Circuit Schematic
Spider robot with PIC16F84
To get enough outputs from the PIC chip, a pair of 74HC164 shift registers was used. These need only two lines from the PIC (data & shift) to produce the twelve...
PIC hydro system controller – Circuit Schematic
PIC hydro system controller
The ELC presented here has some flexibility, thanks to being software-controlled, but also has its limitations: It's intended for microhydro systems that employ...
Photo film processor circuit – Circuit Schematic
Photo film processor circuit
This machine essentially does three things: It controls the process temperature, provides constant agitation of the chemical baths, and performs the timing. The...
Digital Dice circuit – Circuit Schematic
Digital Dice circuit
This is a digital dice circuit tha uses the PIC16C84....
autopilot with rev 2.2 board – Circuit Schematic
autopilot with rev 2.2 board
The servo driver is just simply two 4017 decade counters and lots of 0.1" headers. Only populate the A side headers; the B servo bank is optional and will requi...