Rapid development board for PIC12F series microcontrollers

Here’s Embedded Lab’s new¬†development board for PIC12F series microcontrollers: The 12F series of PIC microcontrollers are handy little 8-pin devices designed for small embedded applications that do not require too many I/O resources, and where small size is advantageous. These applications include a wide range of everyday products such as hair dryers, electric toothbrushes, rice […]

LOpen logic probe detects high, low, and floating pins

LOpen is a PIC-based logic probe that fits inside a pen. It detects if a pin is at a logic ‘High’, logic “Low”, or at high impedance (floating). This time it’s a Logic Pen controlled by a tiny 6-pin PIC10F202. The PCB is 5 cm by 5mm so it fits just fine inside a regular […]

PIC12F source shared for the one-wire HD44780 LCD controller

As a follow up to the “One wire control of HD44780 LCDs” post, McLaren shared the Assembly source code for his project. Pick up the source in the forum. Assembly language source file and hex file (for 12F683) attached… Allow approximately 60 msecs after power-up for LCD initialization before sending commands and/or data to the […]

One wire control of HD44780 LCDs

Does the minimum 6 pins needed to control an LCD give your little microcontroller a sad? In the forum we’re discussing low pin-count control methods for common HD44780 parallel displays. This one uses is a simple serial UART adapter similar to our USB and Serial LCD backpack: Here’s a reasonably economical 1-pin Serial interface solution. […]

Open source USB stack for PIC18F and PIC24F updated

JTR released a major updated to the open source USB stack that’s been brewing in the forum. It’s been designed to work with a generic echo demo, the Bus Pirate v4, the USB IR toy, the LCD Backpack, the Locgic Shrimp, and the Logic Sniffer. So far only the CDC class is supported, meaning only […]

High resolution capacitor meter

We’ve been researching various component testers, and BrentBXR tipped us about this high-resolution capacitor meter. It’s accuracy is claimed to be around 0.2%, which is much lower than typical capacitor tolerances. Internal comparators in a PIC16F628 create an oscillator with the capacitor under test. The oscillator frequency is proportional to the value of the capacitor. […]