e-Peas AEM10941 Energy-Harvesting PMIC with Ambiq Micro AM1805AQ PMIC-RTC

  Ultra-Low-Power energy harvesting applications often requires some “black-boxes” for finding the maximum power point between current and voltage consumption to harvest energy, a DC-DC converter to charge a storage element, some LDO for providing the target MCUs operation voltage and some kind of timer to wakeup the application periodically or wakeup by request via … [Read more…]

Apollo2’s hidden USB

Apollo2’s hidden USB is not a hidden hardware feature, but software bit-banging using Apollo2s flexible GPIOs including the capability to drive 1.5k pullup resistors on special pins used with I2C.The following picture shows the connection between MCU and USB port: The solution supports low-speed USB for realizing HID USB transfers for example. One idea is … [Read more…]

Apollo3Blue

Apollo3Blue is now available in Europe via the webshop of Fujitsu Electronics Europe GmbH: http://shop.feeu.com The best way to start with Apollo3Blue is to use the evaluation board http://www.feeu.com/shopAMA3BEVB For later on prototypes Apollo3Blue is available in BGA (AMA3B1KK-KBR) http://www.feeu.com/shopAMA3B1KK-KBR or as CSP (AMA3B1KK-KCR) http://www.feeu.com/shopAMA3B1KK-KCR Datasheets and latest software is available at the Ambiq Micro … [Read more…]

ClickBeetle Model-Train Controller

Looking back to the magic N-track train I was searching for something bigger but using the same firmware with advanced features. I decided to keep the ClickBeetle standard to add more boards offering to possibility to build a flexible HMI.      The base board called HmiBeetle is capable to add up to 5 ClickBeetle boards … [Read more…]

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