This is the first mock-up with the LoRa unit on. This is the larger and stronger of the modules and it occupied a bit more place than I expected, but I will do. It’s not much passive components on these modules and I still think I have just about the space for the GPS and…
Packing a LoRa and GPS module on the same Hat should be possible and make a lot of sense. I could pack a battery manager as well, but I rather just make a separate board with battery on and this can be stacked on the back of this unit anyway. The MCU is the classic…
I decided to add the Hat form and RPI connection to my Hat allowing me to use this as a PSU as well. I need far more powerfully PSU’s than this, but TPS54260 can deliver 2.5A on any voltage I need, so it’s a beginning + its 3 voltages coming from this board so why…
TPS54x60 is a very nice DC/DC converter covering up to 60V, but the circuit I used on the MC3X60V3A Motor Driver snapped at 30V+. I tested with 2 units before consulting a friend that suggested to add a 10uF capacitor very close to VIN. I have yet to test this because I did not want…
SIM7020E is a small module that offer 4G services and access to the new NB-IoT service that is available to give access to remote sensors that earlier was not possible. All-in-All this is just a new wrapping on a service that have been available since GSM and can be achieved with several low cost modules.…
Hall sensor logic 60V DC/DC Converter Gate Drivers Raspberry PI Connector MCU SuperCap for 3,3V on MCU Raspberry PI mount holes Mount holes for heat-sink Leds SWD USB 2 x End point sensors PSU Capacitance CAN port +60V MOSFET Array GND Extra GND Connectors Current Sensors Phase output 2 x Temperature Sensors.
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…