I decided that I want to make 2 different Ethernet/Wifi modules With different purpose. With Raspberry PI it will be 3, but RPI and ESP32 overlap in functionality. ESP32 with Ethernet/Wifi/Bluetooth is a very attractive “Connector” solution where I can add more connections by adding multiple Hat’s. I can sadly only add a single Raspberry…
I recently purchased an small dev kit for HLK-7688A (above) and noticed that it has a Prolific USB-to-Serial port. Connecting it I get this message: Windows detects the port, but the driver will not open it. I assume this is a fake chip issue again. I have had this issue with Prolific before – which…
This is my 3KW 3-Phase Motor Driver Rev 1.3. Revision 1.0 and 1.1 had air wiring, 3 current sensors and output at right. Rev 1.2 lacked RS485 while Revision 1.3 have CAN and RS485 + 2 temp sensors between MOSFET’s + I solder on cobber wires directly on PCB for 60V and GND to sustain…
Its been a few Hat’s since I started the latest series using SPI as backbone, so it’s time to consolidate on those I want to finish first. I have a list of close to 40 different Hat’s I want to make. Key to them all is that I use STM32F405 as a reusable component to…
This early draft uses ESP32 and a HR911105A RJ45 connector. I want to attempt using LAN8720A as Phy. The Hat will contain SPI as backbone, CAN as secondary control, an USB, Wifi, Bluetooth and Ethernet. The schematics look straight forward, but I have a lot of reading up to do. ESP32 is as fast as…
I am as mentioned before looking for alternatives to connect to Wifi/Ethernet that don’t include a SD Card or going outside the Hat format. I also have an interest in making Ethernet available from embedded systems in general. The main reason is however to be able to Connect multiple Ethernet/Wifi Connections. The block diagram above…
I managed to get STM32H743 running blinking some leds, but not without pain. STCubeIDE is able to download code, but fail on debugging. All in All I basically conclude that H7 is not sufficiently mature yet! This is not about the MCU, but tool, toolchain, drivers and everything around it.
Well – I got a STM32H743 Nucleo kit yesterday and wanted to autogenerate code for it from CubeMX (or STCubeIDE more exctly) – out of the box – it generates code that DOES NOT COMPILE on an eval kit. Sadly this is not the first time, it has become more the rule than the exception.…
I decided to have a look at the STM32H7x3 series running at 480Mhz. The Nucleo board uses the 144 pin ZI version, but they also have a 100 pin V version. 100 pin is attractive because it gives me access to external memory, Ethernet and more + if I should go for a 100 pin…
I just received HLP-7688A module and looking at the size I must admit that I tempted to create a Switch/Router in Hat format. I am not os sure about the SPI on this, but it has 2 UART’s, so assuming I can control the code on the Linux module this could be interesting with Wifi…