The ESP32 may be a low power chip when compared with other WiFi or networking chipsets in the domain. But in conventional terms, ESP32 is […]
LIS3DH interrupt does not work – solutions
The LIS3DH triple axis accelerometer by ST Micro is one of the popular, low cost and extremely low power MEMS accelerometers in the market today. […]
Getting Started with ZMOD4510
The new ZMOD4510 gas sensor from IDT (Renesas) hit the market a few months ago and is a unique sensor of its kind. This first […]
PCB Drill Size for Standard Screws
Here is a quick guide to PCB drill sizes for common screw or fastener sizes used for mounting PCBs, M3 for example. The table does […]
3.3V PIR Sensor for Low Power Applications
A 3.3V PIR sensor for low power or battery based applications is hard to find, for some reason. Modules that you find out there for […]
ESP32 Ethernet PHY Schematic Design
The ESP32 WiFi/BT SoC from Espressif Systems supports wired ethernet along with wireless networking, which could be a huge advantage for applications that need wired […]
STM32 OV2640 Camera Interfacing
Some STM32 series of MCUs have a DCMI peripheral that can be used to interface the STM32 chip directly tocamera sensors. The DCMI is flexible […]
Error LIBUSB_ERROR_IO with VisualGDB debugger
The PCBArtists VisualGDB Debug Adapter can be used with a bunch of different embedded platforms, including STM32 and ESP32. The adapter allows you to debug […]
STM32 SDRAM PCB Layout
STM32 series of microcontrollers suffer a major limitation – they lack on-chip SRAM, just like any other typical MCU. There is plenty of SRAM for […]
SMPS Flyback Transformer Core Selection
A quick rule ot thumb to pick an EE type SMPS flyback transformer core for power output in the range of 1-100 watts.