In Germany, we have at least three companies, who plan to roll out an LPWAN. Two of them are on LoRa the other is on SIGFOX. One of the LoRa operators is backed by a big utility company. However, right now a standard IoT system integrator will not get access to the public LoRa networks […]
Wi-Fi module – five minute set up
This Wi-Fi module arrived yesterday. The complete package includes the Wi-Fi module, a USB connector and a Serial Peripheral Interface (SPI) to USB converter. The operating voltage is supplied via USB from the PC. After plugging the module into the USB port, a standard terminal software application was started on the PC. With the first […]
Waterproofed Android smartphones, tablets and pet trackers
Android devices and pet trackers for life, not just for Christmas – original blog posted in Nov 2011 As Janis Joplin sang, “My friends all drive Porsches, I must make amends”. Two of my friends own an iPhone and they always buy the latest smartphones. I will “make amends” and skip buying a tablet for […]
GPS antenna selection for a GSM / GPS tracker – DUT 4
Effect of the cut-out zone without copper under the antenna The device under test is a PCB of size 40 mm x 20 mm, again with a GNSS chip antenna designed for small tracking devices. Small mobile GSM/GPS trackers are common for pets, humans or assets. GNSS chip antennas operate as loop antennas which are […]
GSM module on a PCB with a helical GSM antenna – DUT
Are you able to find the mistakes in this GSM module antenna design? The manufacturer labelled it a GSM adapter for the Arduino platform. We have removed the brand name of the GSM module. Delivery notes There were no delivery notes or invoice inside or outside of the package. The customer was really lucky, that […]
GPS antenna selection for a GSM / GPS tracker – DUT 3
Interference of temperature on GPS antenna resonant frequency The device under test is a PCB of size of 40 mm x 20 mm, again with a GNSS antenna for a small tracking device. Small mobile GSM / GPS trackers are common for pets, humans or assets. Chip antennas operate as loop antennas which are magnetic […]
IoT side dish – GLOBIO BLE beacon powered on German potato
Helical GPS antenna versus GPS chip antenna
Q: I came across a blog of yours some years back. By chance are you still offering assistance with GPS related antenna solutions? If so, we are trying to find a replacement for a Sarantel helical antenna. We need to match or improve upon the performance of the Sarantel product. We are looking into Maxtena’s […]
IoT sandwich – GPS chip loop antenna on bacon – 2
Low Cost GSM GPS Bluetooth module on Arduino shield
New GSM / GPS / Bluetooth module adapter for STM32 Nucleo, Arduino, Intel Galileo plus compatible PCBs Your ideas? Your wishes? Your recommendation? Your advice? I will listen to you. Before I started to write the IoT / M2M Cookbook I asked business friends what they would like to pay for such a book. A […]