This diagram above is a draft of my current TCP/IP Stack showing the hardware MAC at bottom and stack modules on top. At right is RTOS services needed for an TCP/IP Stack. The diagram below is the same using a Wiznet W5500 chip. For now I will be using the Wiznet W5500 and it’s ioLibrary,…
You can find Annotated Schematics for the Communication Adapter on the downloads (here). I have so many designs that I need to make proper documentation on them, so these doc’s will be uploaded & updated on regular basis. The doc basically contains info like MCU pin usage and stuff needed to program the devices +…
This ADM2582E, is a galvanic issolated RS485/RS422. I picked it because it was my only option for galvanic all-in-one. I was just checking it’s speed and it support 18Mbps and 256 Devices in a network. It cost ca 4.- USD compared to a few cents for MAX3485, and it’s a bit larger that MAX3485. You…
These pictures show the annotated 3D. Full PDF documentation can be found on the Download page (here). 4 pin HMI header. Super capacitor for RTC. SWD. W5500 Raspberry PI Zero W mounting holes. Ethernet RJ45 GPS Antenna GSM/GPRS Antenna Nano SIM Card holder. Standard mounting holes. M2.5 in each corner. SIM808 module Analogue Audio/USB connector.…
I have moved the RSX signals to the outer row so they can be reached with a 2.54 pitch connector. This allows a PLC module to use screw connectors or other 2.54 pitch connectors for stand-alone usage “as is”. An updated 3D model showing possible connectors if the 2×20 pin header is unpopulated. I see…
Looking at my Ethernet/GSM module I realise that I with a minor change on the backbone pin-out can just add 2.54 pitch screw terminals and we have a stand-alone home sentral with 5V on the upper screw block and RSX on the lower. 5V here is in reality 4.5 to 12V, so we can just…
Finally got the last packages in and added some extras. Still some work to do before this is done thought, but in the process of completing 1st final draft. Due to the complexity of this module I expect 1-3 revisions before we are done. Basically I just want to complete this draft & doc and…
Meet my new Ethernet/GPRS module. I am not finished routing the PCB and lack some 3D packages, but you get the idea. This 3D modeling tool is a bit ruff in the edges anyway, but it serves it purpose. Also, I still have a few loose ends here – so work in progress… This 3D…
PCM Interface is a kind of standard build on the same principles as SPI. The SPI interface can handle the clocked bit-streams, but I2S can also handle the PCM encoding. In simple words I should be able to send/receive voice effortless – just need to get my head around register settings in STM32F405 which is…
I decided to replace ESP-12 with a Raspberry PI Zero W fitted on the back facing front. The PLC card is of the same height as the PI Zero Length, so this is perfect. Mountimng it on top was difficult due to the Ethernet connector sticking out +Â I had no space fr routing. I…