AFSK 1200 Modem Based on PIC16C620 circuit

Eight-digit-microprocessor-display circuit

The display interface utilizes the ICM7218A/B in conjunction with an 8048 family microcontroller. An 8-bit data bus (DBO/DB7-IDO/ID7) facilitates the transfer of control and data information to the 7218 display interface during successive WRITE pulses. The mode input pins on...

integrated circuit Improving absolute precision of ADC to balance battery voltage

Utilize a high-performance microcontroller (Piccolo TMS320F28035, 12-bit resolution, +/- 4 LSB offset, +/- 60 LSB gain) to measure the voltage across stacked battery cells and control related analog electronics for charge equalization. The microcontroller will also save data in EEPROM...

KD2BD Pacsat Modem

The KD2BD Pacsat Modem is a cost-effective, high-performance 1200 bps BPSK modem designed to connect a packet radio terminal node controller (TNC) with an amateur satellite ground station, enabling full-duplex access to the 1200 baud "Pacsat" constellation of amateur satellites....

Modem/Fax Protector For Two Computers Circuit

This modem/fax protector can be utilized in telephone-line connections between a PC or a terminal and a remote computer. In this circuit, the surge voltage protectors (SVPs) are rated at 230 V. Additionally, a proper grounding is essential for optimal...

delay

This article outlines the construction of a simple microcontroller-based delay circuit designed for photographic applications, such as drop or high-speed photography. It is capable of controlling the trigger lag for cameras and flash units, generating periodic trigger pulses, or managing...

Microcontroller and Motor Driver Circuit Board

Efforts were made to minimize the number of wire jumpers on this board, but space constraints arose due to the integration of the microcontroller and motor driver on a single board. The design would have been cleaner without the inclusion...

IC Encoder Chip

This function is not complex and can be easily implemented in a Programmable Logic Device (PLD) or Field Programmable Gate Array (FPGA). However, implementing this function in a small PLD may consume most of the device's I/O pins, which could...

graphical LCDs with a microcontroller

How can graphical LCDs be controlled using a microcontroller? Is there any datasheet available? Graphical LCDs (Liquid Crystal Displays) are widely used in various electronic applications for displaying complex graphics and text. To control these displays with a microcontroller, several steps...

10 or more switches using a microcontroller

There are several methods to read multiple switch inputs using a reduced number of microcontroller unit (MCU) pins. One approach involves using an analog MCU pin to read multiple switches by assigning a unique voltage to each switch through a...