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 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 …
Sep 24 2018
It is relatively easy to turn an STM32F103C8T6 (BluePill) into an STLink programmer. All that is needed is a copy of the STLink firmware and a means to flash it. Do a search for STLinkV2.J16.S4 and download it. Flash that binary file into the STM32F103C8T6. See my other post HERE on the STM32F103C8T6 as it mentions …
Aug 28 2018
The Arduino folks just came out with the Arduino Command Line Interface (CLI) : Announcing the Arduino Command Line Interface (CLI) A while back, I wrote about the Arduino-Builder which is what the Arduino IDE invokes behind the scenes to compile the sketch. (That post is here.) Now, with the Arduino Command Line Interface, everything …
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