[Second Season]:Last year we successfully distributed 20pcs of si4463 modules to the members of ELEKTRODA.PL . We would like to continue the activity and offer 20pcs of Semtech LoRa long range module DRF1278F for evaluation. Members of ELEKTRODA who have interest in testing the modules and sharing the experience with our community can post your willing under the topic and then send me your detailed shipment address by private message[PM] (including post codes and telephone number), which can be reached by post office. The first 10 repliers will get 2pcs as free samples for testing with free shipment.
Features: Part Name: DRF1278F
Category: (G)FSK/4(G)FSK/LoRa transceiver module
Features: 433MHz transceiver
20dBm output power
Standard SPI interface
127dB dynamic Range RSSI
Automatic RF sense and CAD monitor
Data Rate: <300 kbps kbps
Standby current: <1uA
Supply voltage: 1.8~3.6V
DRF1278F is a type of low cost RF front-end transceiver module based on SX1278 from Semtech Corporation. It keeps the advantages of RFIC SX1278 but simplifies the circuit design. The high sensitivity (-136dBm) in LoRa modulation and 20dBm high power output make the module suitable for low range and low data rate applications.
DRF1278F module consists of RFIC SX1278, thin SMD crystal and antenna matching circuit. The antenna port is well matched to standard 50 Ohm impedance. Users don't need to spend time in RF circuit design and choose suitable antennas for different applications. DRF1278F operates at 1.8~3.6V with extra low standby current which makes it suitable for battery powered-up applications. Because DRF1278F is purely hardware module and it adopts ±10ppm crystal which the resolution of it places a important role in calculating spreading factor, bandwidth, etc. Users need to read the datasheet of SX1278 carefully in order to use the module in the best performance. DORJI also provides sample codes based on microcontroller and Arduino platform. The customers who buy the modules can contact the sales of DORJI for modifiable copies.
Thanks the interest of friends in Elektroda. The activity for free samples and free shipment is finished now because we have got enough applicants . We will held such activities here irregularly for our interesting products. Please kindly follow on the Facebook of Elektroda or DORJI's twitter for new activity in the future.
Dodano po 20 [minuty]:
Wow ! lot of takers.
Ten of winners and four of latecomers
Hey guys I think you should share with us, what idea you want realize with those RF modules.
Dear, Thank you for your kind statistics. I hate the time lag or else I can announce the finish of the activity earlier .
The SX127x series of Semtech uses its unique LoRa® technology to improve the receiver sensitivity instead of increasing the output power. The line-of-sight distance at very low data rate can be 3~4km so some work done by 500mw module now can be finished by DRF1278F but with less power consumption and lower BOM cost so the DRF1278F module is very suitable for remote control, telemetry or star network for home automation. I guess Semtech speaks much well than me .
Till now, we have got the shipment details from members: pff / lukasz_elektronika / piotrek700 / theluid / melon1234 / grzesiekskc /Magiczek. We will ship the samples this week and send the tracking number by PM then.
To: bartol_99 /buli439 / denis2k1 / Hoolgarez182 / kuba1993zg / karol9966 /kuran17 / ShEvU_elektro. Please kindly send me your detailed shipment address (Tel & postcode) if you have interest ( I am not sure because I don't know Polish and can not use Google which is blocked here). We will send the samples next week or earlier.
We arranged the shipment and sent the tracking information to you by PM. Please kindly check it. If I am right, karol9966 / denis2k1/ kuba1993zg / ShEvU_elektro have not sent me shipment address yet. Please kindly send me message so that we can arrange the shipment in the earliest time.