Jul 13 2021
Back in January of this year (2021), the Raspberry Pi Foundation came out with their first microcontroller board calling it the Raspberry Pi Pico. The microcontroller chip (RP2040) used on the Pico was designed by the Raspberry Pi foundation and features a dual-core Arm Cortex-M0+ processor with 264KB internal RAM, support for up to 16MB …
Feb 02 2021
In a previous post (here) , a project was introduced for those of you who use Adobe Lightroom. There is a way to use a MIDI hardware ‘box’ to control various Lightroom actions. I am told that once you use the hardware controls you will never want to go back to the software ones. A …
Feb 01 2021
Rotary encoders are useful for many things. Here is what they look like (with and without the button): They have 5 connections (Power, Ground, Data, Clock and Switch). The button can be turned (continuously in any direction) and it can also be pushed down . The switch connection monitors the button …
Jan 13 2021
How good are you at soldering? Here is the STM32F103C8T6 microcontroller board that I use and have to solder all of the pins. Sometimes when I solder pins to the board, the connection looks OK and even tests OK with continuity on a multimeter. However, the solder connections even though they pass those two …
Dec 11 2020
Ever wonder how a motion detector is used to turn on a light? Take a look at this graphic (made with Fritzing). It shows the circuitry that uses an STM32F103C8T6 microcontroller to control a PIR sensor and relay switch to turn on a Light. Get the Fritzing source code for the above image HERE (in …
Dec 08 2020
For those of you who use Adobe Lightroom, there is a way to use a MIDI hardware ‘box’ to control various Lightroom actions. I am told that once you use the hardware controls you will never want to go back to the software ones. There is a Lightroom plugin called MIDI2LR which interfaces various MIDI …
Dec 30 2019
This is a short post which shows how to create a wireless WEB server on an ESP8266. It uses a microcontroller, in this case an STM32F103C8T6 (BluePill ) to send commands and control the ESP8266 Here is what the wiring looks like:. You can get the Fritzing code for this image here. …
Dec 27 2019
If you read my last post on Solar Power System Monitoring with an Arduino you might be wondering if that circuit could be enhanced a bit. Say, change the LCD to an OLED and add wireless (WEB server) capability? I was not happy to have to go out and look at the device when I …
Nov 28 2019
Here is the circuit showing how a Web Server on an STM32F103C8T6 can be used to control a Relay Switch: The Fritzing code used to create that diagram/image can be downloaded here. An ENC28J60 ethernet module is used to connect the STM32F103C8T6 (BluePill) to a network. Here is the source code for the sketch to …
Jan 17 2019
Wouldn’t it be C 🙄 🙄 L to have a Linux prompt on the STM32F103C8T6. Not likely, however, Nuttx on the STM32F103C8T6 is about as close as you will get. Nuttx is a RTOS which runs on a wide range of microcontrollers including the STM32F103C8T6. To compile Nuttx for the STM32F103C8T6, a development environment needs …
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