Bluetooth Low Energy beacon with support of RSSI level plus temperature, luminance, acceleration and magnetic sensor I. Temperature sensor That means it any beacon in the evaluation kit is a wireless thermometer. It is also waterproofed. You can use it at your terrarium, aquarium of or doghouse. II. Magnetic sensor Just stick the RF beacon […]
GSM chip antenna design mistakes in detail I. Size of the ground plane The length of the distance marked with I is 56 mm only. Most GSM chip IFA antennas or PCB track antennas will radiate perfect on an estimated length of the PCB of 90 to 100 mm. Just compare it with the length […]
Be aware that a GSM module will charge up to 2 Ampere peak current during 2 Watt TX power Take care that your power supply will be able to drive the current peaks. Have a look on short PCB tracks in right width. And have a very close look on a capacitor with low impedance […]
GSM antenna designs mistakes in details I. Size of antenna ground plane If you compare the simulation of the GSM antenna in the IoT M2M Cookbook with the antenna at the picture, then you will understand that the antenna efficiency at GSM 850/900 will be poor, because the PCB is already much to short. Nobody […]
The translation to English will follow later Das Ziel des Projektes ist ein multifunktionales Kit zur Entwicklung von M2M IoT Applikationen auf Basis von Linux und Android. Im Prinzip ein Rasberry Pi für Erwachsene mit GSM-, HSPA- oder LTE-Modul. Im Gegensatz zum Rasberry Pi kommen nur Industriebauteile zum Einsatz, welche jeder dann in kleinesten Mengen […]
Nicholas has made a mistake. The good man put a Bluetooth Low Energy evaluation kit in my boot. Nicholas is just not like me at Xing, Linkedin, Google+, Twitter, and also has no blog. Nicholas is still living in his analogue world. Otherwise he would aware that I already own a kit. So be it […]
Technical features of the HL6528 Network Technology: GPRS, GSM GNSS: Optional GPS/Glonass with HL6528-G Frequency Bands: 850/900/1800/1900 MHz Carrier Certifications: Orange, Telefonica, Vodafone Regulatory Certifications: R&TTE, CE, GCF-CC, FCC, PTCRB, RoHS Compliant Operating temperature: -40°C to +85°C Form factor: Solder-down / SMT Mounting The HL6528 development kit includes: 1 AirPrime HL6528 module on socket boards […]
2G, 3G and 4G plus GNSS in same shape The new Sierra Wireless HL6528-G is a real amazing piece of wireless technology. I am close to 20 years in GSM and GPS. In the old times we were happy get a GSM module without GPS in a shape of a cigarette box. Such an old […]
ZigBee has interoperability problems. Two software layers called ZigBee profiles developed by two different companies can create profiles that interfere with different versions of ZigBee profiles. Worst case two devices that have ZigBee chips might not interoperate. And even two of the same chips can’t communicate to each other if the run different profiles like […]
The reference design contains a NFC link to a PDA or Android smartphone. The magnetic energy of the NFC reader / writer of the Android phone is high enough to supply the reference PCB with MCU and E-Paper label. The PCB holds a System on Chip (NFC antenna interface, embedded MCU, EEprom and SPI interface), […]