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The PI-AIO and PI-DIO modules are connected to the Raspberry Pi on the I2C bus on pins GPIO2 (SDA) and GPIO3 (SCL). Therefore, the I2C stack, which is already integrated in the Raspberry OS, can be used for control. Let's take a look at how to do this in the Python programming language.
Read more: Using PI-AIO and PI-DIO with Python in Raspberry OS
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Three modules have been developed with digital and analogue interfaces not only for the PI-CPUF407. This includes the PI-FIO module, designed for direct use of the interfaces on the STM32F407 processor, as well as PI-DIO with galvanically isolated digital inputs and outputs and PI-AIO with galvanically isolated analog inputs and outputs. PI-DIO and PI-AIO are compatible with the HAT+ standard for Raspberry Pi.
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We took the core of the IPC-CPUF407 modular computer and placed it on a board with Rasberry PI format. The result is probably the most sophisticated module with an STM32F407 processor that includes Fast Ethernet and Wi-Fi communication interfaces, a MicroSD card slot, two USB interfaces, a GPIO expansion connector with digital and analog inputs and outputs, and a serial terminal with a command line with USB-C bridge.
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In cooperation with the Lost divers club we started to develop a closed circuit rebreather and also a diving computer with decompression calculation. Now we can present the first prototype of LD'sC/DC computer, which is designed for both beginners and advanced divers, as it can work with multiple gases including trimix and also with open or closed circuit option. This computer will be the same for a complete rebreather with oxygen dosing control.
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Five years ago, in 2019, Tomas and I fought together the pitfalls of the 1000 miles adventure race, and we still meet each other at many other races afterwards. Tomas hasn't given up on "the miles", as the 1000 miles race is familiarly called, and has grown incredibly athletic, even winning it twice. And that's when DYNABANK started to be created, the first version was tested in this race in 2019. And now our paths crossed again, Tomáš together with Klára, whom he met how else but on the miles, last year founded their own MTB unsupported race called 3-2-1 VABANK, which is unique in that it is limited in the equipment that the racer can carry with him. It's simply a vabank race. And this year, it's spiced up even more by the fact that Klara and Tomas say their yes the day before for the journey of a lifetime together.
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Power bank with charging from the bicycle dynamo DYNABANK included a PASS function, which was able to send the battery voltage to the USB output without the inverter on and also the voltage from the rectifier during the ride. Since this feature proved to be of little use and also confused the connected device, this feature was removed. However, it is replaced with a modification that can automatically disconnect or switch on the USB output.
Read more: DYNABANK supplied with automatic disconnect or switch on of output while riding
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The IPC-CPUF407 module includes a CAN controller in the STM32F407 processor, but is not equipped with a bus driver. The IPC-CAN485 expansion module offers this interface and can also add a second RS-485 interface. Both CAN and RS-485 are galvanically isolated, providing increased protection against interference, ground loops and overvoltage. More information about the module can be found here, support is also available in the open application firmware.
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In many cases, it is necessary to build a remote control system without a power supply. For the DIN-IPC series, an MPPT rgulator has been developed that allows charging of batteries from photovoltaic panels and monitoring of the photovoltaic system via an integrated processor unit, so that status information is always available, as well as from other sensors connected to the system.
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The DIN-IPC series components for installation in low panelboards can also be deployed for today's popular smart home applications. Not only can they be used to control advanced components such as heat storage tanks, ventilation and heat recovery systems or heat pumps, but they can also be used for basic functions such as room temperature measurement, light control, heating control, etc. There is no need to write a special app for this, just a connection to, for example, Home Assistant.
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Czech company Atrea is a supplier of heating and ventilation systems for family houses. Their Integrated Heat Storage (IZT) is a tank with heat exchangers that serves as a heat storage for hot water and heating. It can be heated by solar collectors, fireplace, pellets, heat pump or electric coils. However, in one installation with solar collectors and a fireplace, there was a requirement to monitor the operation. As the RG23 control unit does not support this, it was replaced by our DIN-IPC controller system and a sample application was created which takes over complete control of the system and also sends the current status to a server where the data is stored and the operation of the system can be monitored over time. Due to the lack of cabling, everything works wirelessly via Wi-Fi, so there was no need to make interventions in the house.
Read more: Control of IZT by Atrea realized by DIN-IPC controller