Maerklin 4316 Central

You are right, Maerklin 4316 is not a central but a normal waggon. But with a RaspberryPI running srcpd and Rocrail this waggon can be easily turned into a DCC central. We need a circuit creating a differential protocol from the serial stream of the RaspberryPI Zero W, so for that I had used DigiSpark Mini … [Read more…]

ChristmasBeetle

ClickBeetle celebrates Christmas with the ChristmasBeetle baseboard for example using BlueBeetle I. See the schematics: Schematic_ChristmasBeetle_v10 And a 3D PDF of the PCB: 3D_ChristmasBeetle See the video:   See more about ClickBeetle here

Ultra Low Power MCU – How to measure energy consumption?

Starting with ULP MCUs like Ambiq Micros Apollo1 or Apollo2 available via shop.feeu.com is very easy, but designing ULP applications can be a nightmare without good tools measuring the power consumption. For Ambiq Micro Apollo Series MCUs Fujitsu Electronics Europe GmbH realized different possibilities to measure ultra low power consumption. On the one hand FEEU … [Read more…]

Homeautomation with ClickBeetle and Fujitsu F-Cue

I have made it: Getting FHEM and Homebridge running on Fujitsu F-Cue board. The board itself provides via WLAN and hostapd a mobile hotspot where a smart phone can connect to. On-board Bluetooth connects peripherals like FEEU ClickBeetle (www.feeu.com/clickbeetle). See some short demo video controlling some LEDs and a wireless connected ClickBeetle. All available via … [Read more…]

Using Ambiq Micro Apollo1 or Apollo2 MCUs CTIMER as PWM

A Pulse Width Modelation (PWM) has a duty and a cycle. The duty can be something between 0% and 100% of the cycle time. For Ambiq Micro the CTIMER peripheral can be used to generate a PWM. GPIO setup First of all the GPIOs have to be set, see also Using GPIOs for more details. The … [Read more…]

AMAPH1KK-KCR – Ambiq Micro Apollo2 MCU

AMAPH1KK-KCR is the chip-scale package version of Ambiq Micros Apollo2 MCU. It has 1MB Flash and 256KB RAM in a 49-pin CSP package. Specifications and Features Ultra-low supply current: <10 μA/MHz executing from flash at 3.3 V <10 μA/MHz executing from RAM at 3.3 V High-performance ARM Cortex-M4F Processor: Up to 48 MHz clock frequency … [Read more…]

AMAPH1KK-KBR – Ambiq Micro Apollo2 MCU

AMAPH1KK-KBR is the BGA package version of Ambiq Micros Apollo2 MCU. It has 1MB Flash and 256KB RAM in a 64-pin BGA package. Specifications and Features Ultra-low supply current: <10 μA/MHz executing from flash at 3.3 V <10 μA/MHz executing from RAM at 3.3 V High-performance ARM Cortex-M4F Processor: Up to 48 MHz clock frequency … [Read more…]

Using GPIOs of Ambiq Micros Apollo1 and Apollo2 MCUs

The GPIOs of Apollo1 and Apollo2 series MCUs can be configured via a MUX for up to 8 different functionalities. Following schematic can be found in the datasheet in the chapter GPIO and Pad Configuration Module (Apollo1: chapter 6, Apollo2: chapter 7): The IO-cell itself can be configured in a complex way. The datasheet is … [Read more…]