Lean2

There are plenty of circuit simulators available, that give detailed analysis of circuits with capacitors, inductors and semiconductors, and these can be used to simulate a purely resistive circuit (such as a 1938 ‘Q’ stock traction control, as shown abov…

To debug embedded systems, such as those with the Raspberry Pi Pico processor, normally only two options are available: using ‘print’ statements, or a debug utility such as GDB.

RTK system A conventional GPS (Global Positioning System) or GNSS (Global Navigation Satellite System) receiver has an accuracy that is at best 1 or 2 metres (3 or 6 feet), which is insufficient for some applications, most notably land surveys, and self-d…

In a previous post, I described ‘EDLA’, a WiFi-based logic analyser unit, that uses a Web-based display.

Analog signal capture at 60 megasamples per second This project provides a simple way of capturing data using a Pi PicoW, and displaying it wirelessly on a Web browser, as either as a logic analyser, or an oscilloscope.

Sample page from Mongoose Web server Mongoose TCP/IP is comprehensive easy-to-use TCP/IP software stack, produced by Cesanta Software Ltd.

Circuit diagram of Simple Isolated Analog-to-Digital converter This project was prompted by the need for a circuit to provide a galvanically-isolated measurement of battery voltage.

In a previous post, I looked at ways of measuring frequency accurately using an RP2040 CPU programmed in C.

Prototype vehicle speed display This project describes the creation of the software for a vehicle speedometer.

Pi Pico Webcam A Web camera is quite a demanding application, since it requires a continuous stream of data to be sent over the network at high speed.