Updated 3D Model 18.dec.2018 This is a bit more than a mockup since it is almost complete, but adding 15mm to an existing design is a lot of extra space. I turned the Hat so that the Raspberry PI Ethernet would be at right. Basically this is 35mm wider than a normal Hat, so it…
This is an unfinished 3D of MC4X60V50A or MC4X for short. I initially stated that I did not want this as a Raspberry PI Hat, but I do have SPI1 available + CAN is already planned. It would make a powerfully module + I could add an isolated GW as an add-on etc. The controller…
This is an early mockup of a NB-IoT/4G/3G/2G/GSM Hat just to illustrate the space needs. My main concerns are signal quality on the antenna part as this module do not have a direct antenna output. Below is a PCB snap-shot showing the details of the antenna layout. I really could have needed a 3rd layer…
I drafted a GSM/GPS module some time ago, but I never ordered it as I decided to ditch that PLC design and pick up a smaller footprint. Time has changed so I want to make a new approach. Using STM32F405RG as core I want to add NB-IoT, LoRa and GPS capabilities. NB-IoT is a new…
I want an Ethernet module to by list of boards. I can always use Raspberry PI 2/3, but I would still like to make my own as well. In the past I have used W5500 a few times, but this time I want to dig into ESP32. ESP32 already have the TCP/IP stack, it has…
One of the challenges I face is that batches with MCU’s from Asia are dodgy. This has been specially bad on STM32F405RG so I want to make myself a MCU tester for Rx and Cx series. I just tried to wire one and it kind-off works, but SWD wiring get to dodgy so I need…
XPortHub feeding from Raspberry PI 3 A+ this time. 2nd board and 3rd MCU. The 1st MCU started behaving strange, so added a 2nd that did not work at all. Finally ripped off an old good one and we have a working board. Basically I need to make myself a tester for these MCU’s. Regardless,…
I do love then things just work. This came up straight away – no coding, all generated from CubeMX. I need to add a few bits for this to actually work, but it is a first step. Lets see if we can get the rest of this cute Hat design alive as well.
The first 2 Hat’s of my new series arriving – I paid for the fast track because I will be assembling and testing these over x-mas. The PCB at left (above) and below is the XPortHub, the other is the ESP32 based Wifi Hat. The picture below is on top of a Raspberry PI 3…
Final 3D with horizontal connectors. I might add a jumper to allow separation of 5V and Stepper V+. This can in theory drive 28 PWM channels up to 50V @ 500mA each, but the ULN2003’s overheat if we tried that. I will add a proper PWM Hat later as this is dedicated for 5-wire stepper…