EDK 312 Quick Start
Contents
1. EDK 312 QUICK START Green Smart Wireless enocean Step 1 Assembly with three soldering points Only three components are necessary to realize a temperature powered radio transmitter The all in one sensor module STM 312 the ultra low voltage DC DC converter ECT 310 and the low cost Peltier element TEC 2L All three components are part of the EDK 312 evalua tion kit from EnOcean Figure 1 shows the corresponding block diagram Figure 2 shows the assembly of the thermo powered wireless sensor Only three small soldering points are needed start up in seconds Peltier Element Antenna Sensor Element STM 312 Fig 2 Assembly with 3 soldering points Step 2 Heat energy from the finger As shown in Figure 3 hold the thermocouple with your thumb or even better with the al ways warmer inside wrist onto a cold surface A metal surface is usually good suited to be colder compared to the finger temperature which is very individual Note Ensure correct orientation of the lead wires of the Peltier element The red wire must be left side next to the black wire so that the Peltier element provides the correct voltage direction If neces sary turn Peltier element simply upside down Step 3 Send radio telegram As shown in Figure 3 now hold the STM 312 radio module with the other hand and press the learn button in some cyclic time distances Once enough heat energy has been col lected the red LED next to the an2. ion and logging of radio telegrams send from the STM 312 iae Fig 4 Further evaluation using the test board EVA 330 Disclaimer The information provided in this document describes typical features of the EnOcean radio system and should not be misunderstood as specified operating characteristics No liability is assumed for errors and or omissions We reserve the right to make changes without prior notice For the latest documentation visit the EnOcean website at www enocean com
3. tenna blinks when you press the learn button signaling that a radio message was sent Typically enough energy and so the transmission function EDK 312 QUICK START Green Smart Wireless enocean is given within a few seconds after the thumb was placed onto the Peltier element If not so please increase temperature difference and or check polarity of the Peltier element Fig 3 Operating a radio telegram Other evaluation options with test board EVA 330 In the EDK 312 evaluation kit additionally the test board EVA 330 is contained The module assembled during Step 1 can be easily plugged onto this board as shown in Figure 4 and a simple sensor system can be simulated by rotating the potentiometer In addition all major plug connectors of the STM 312 module are passed out to a through hole grid row for easy external access and connecting On availability of sufficient energy measurable with a voltmeter between the outputs VDD and GND sending of telegrams is either cyclically every 100 seconds according to the initial factory parameterization of the STM 312 mod ule and immediately by pressing the WAKE button To parameterize or program the STM 312 module the programming adapter of the EnOcean development kit EDK 300 separate ly available can be connected to the large test board connector Details can be found in the EDK 300 User Manual The EDK 300 development kit software also provides the convenient visualizat
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