I still got a few components to make\upgrade before I have a full Home Automation network. The CCM and RSX module allows me to create a central, but I need sensors and I need to feed the sensors power. One solution to this is to create an active RSX Switch with power output on each…
3D of a 3-port RS485 GW. This actually have 5 RS485 (or RS-X). 2 on the backbone bus running high speed, and 3 isolated with lower speeds in front. These can be used Standard RS485, RSX or even Profibus/485. The MCU is actually capable of running 3 port Profibus using UART’s saving the need for…
Added 2 coils on the 16 x Servo Module as well. On this I have plenty of space. I should have moved the MCU a bit down, but I will leave it for now. This module provide output only, meaning it can not do generic IO as my previous 32xServo/IO could. The limitator is the…
Not very exiting – just added the 3 extra 15uH coil options I mentioned earlier on the back. As mentioned these are added because I suspect I need them to separate 5V PSU to different high frequency modules. The issue, as we learned earlier is that these freuencies interact. The coils here simply let 5V…
I updated the module list again – don’t worry – this will not be the last change here. CCM (Communication Central Module) is the new name for the combined Ethernet, Wifi, Bluetooth, GSM/GPRS, GPS, RPI Module. I packed so much into this that it covered 3 planned modules. Servo Controller Module was illustrated earlier. I…
These two diagrams show drafts of analogue data acquisition modules. The first is a 8 channel 24bit @30Ksps while 2nd is a 16 channel 12bit at 2,5Msps. The ADS1256 is available for ca 5.- USD and provide 8 channels with 24 bit resolution at a sampling speed of ca 30ksps. This is very good for…
One of the reasons I selected a PCM interface adding a digital sound connection was because it allows me to connect sound to/from the MCU using I2S. As each GSM/GPRS Module also have both Ethernet & Wifi it is very easy to create a Mobile Home Phone Central with SIP Phones around the house. Using…
Learning from my experience with a 168Mhz MCU interfering with a 180Mhz DC/DC I realize that I might need a similar option to separate the 4V PSU feeding the SIM808 on the module pictured above. In this case I would need a larger 2-3A coil related to 13 (4V PSU) above. This being a single…
This is a block diagram of the All-In-One Home Central. This is basically a merge between two PLC cards to create a smaller, mobile bread & butter node. I am not going to do anything on this yet – I simply want the MicroPLC modules up running first since this is re-use of the same…
IoT is all about wireless connections these days. The main challenge is that providing sufficient security becomes a challenge becausse you need some computing power for secure encryptions – which easily drive cost and size. Myself I prefer to use secure wireless links to cover distances between buildings and floors, while I use more classic…