X893

  1. Neoway SL720 433MHz

    Schematic for cheapest (10$) Neoway LORA module SL720 . Firmware for P2P mode Firmware for STAR mode...

  2. DIY JLink-OB-072 (JLink + COM)

    How to make JLink-OB-072 debug adapter. Easy and correct way - buy from SEGGER and be happy. Also right way - build it yourself but with some limitation. You can't use firmware update from JLink.exe only via STM DFU utility. Now need prepare first step. Buy correct beer (Krusovice) and open it. 1. Extract binary part from JLinkARM.dll (from JLink_V512) For example from offset 7153340 (0x6D26BC) and size 41192 (0x0A0E8). Use any binary extraction tool as you prefer. After this you have file with 41192 bytes such as this Now move to step 2 You need STM32F072C8 chip with simple connection: Power...

  3. LORAWAN - Second step

    Prepare software development after initial hardware tests complete. 1. Cross GCC for Raspberry Pi 2. Visual Studio projects for lora_gateway/packet_forwarder (not need if prefer Eclipse) 3.Eclipse for remote debug (on RPi) 4. Visual Studo projects for TTN RESP API, TTN MQTT client and simple local UDP Server 5. Create repository and commit (https://github.com/x893/LoRaWAN)...

  4. LORAWAN - First step

    Prepare LORAWAN gatewan. Build with Raspberry PI and iC880A concentrator (thanks Leeuwarden guys for module) add some plastic details Clone Lora-net lora-gateway and packet_forwarder (i use experimental branch), prepare configuration for TTN server and see it on map. (this picture from iot.semtech.com site) Now prepare node with iM880A-L module Clone Lora-net LoRaMac-node , change SK-iM880A example ClassA node (remove POTI, LED, add UART with debug messages, etc.) and see connection to gateway and packets on server. Create simple MQTT client to receive online messages from TTN broker (windows console...

  5. RC5 symmetric-key block cipher STM32

    Implement RC5 symmetric-key block cipher for STM32 RC5 wiki RC5.c, RC5.h

  6. SX1278/SX1276 (RFM98W/RFM96W) LORA module

    UPDATE: Range for wire antenna 17cm 433MHz, LORA mode. Software based on Radiohead (see below) with STM32L151. Minimum RSSI -84 dB for 450 meters (across building). UPDATE : Implement standalone datagram server and client from Radiohead 1.46 Support USB-CDC and Serial communication. Source codes available on github Simple LORA RF module with RF96W/RF98W (HopeRF) and STM32L151CB. Configuration via soldering jumpers for USB, standalone or Raspberry PI. Software from LoRaMac-node...

  7. uTracker batch production

    New green and white pcb for uTracker

  8. Sale of used car trackers (opensource)

    Version CX (STM32F100C8/B - 25$) and RX (STM32F101RC - 30$) Read carefully about GSM module below ! + delivery cost via EMS Post http://www.ems.post/ http://www.emspost.ru/ru/calc/ All trackers checked. See schematics and firmware on https://github.com/x893/CarTracker RX Version photos Options: Plastic case, GSM/GPS antennas (external 3m cables), power cable and 1 input sensor cable SL868 (GPS only) GL-868-DUAL ( countries limited ) http://3.imimg.com/data3/KY/RU/MY-793343/gl868-dual.pdf Country SIM lock for the following countries: RU (Russia) UA (Ukraine) BY (Belorussia) MD (Moldova) KZ (Kazakhstan...

  9. PTR9048 as Bluefruit LE Friend

    I see perfect adapter from Adafruit Bluefruit LE Friend but need wait a time to delivery and already exists some PT9048 . Why not use and check Bluefruit LE Friend features ? Connect PT9048 to J-Link adapter and start nRFgo Studio Program S110 nRF51822 7.1.0 softdevice Program application blefriend_s110_xxaa_0_3_1_141112_blefriend_debug.hex Connect with wires to USB-UART adapter (only 3.3V !!! Command and Data mode works fine....

  10. Micro GPS/GSM Tracker

    Update: Compare 3 GPS modules: UBLOX MAX-M8Q Quectel L70 (GPS only) Quectel L76 (GPS/GLONASS) New version of micro animal tracker. Features: MCU - EFM32G210F128 (Cortex-M3, 128K flash) Flash memory 4Mbytes Quectel M66 GPS module from L70, L76, UBlox MAX-M7Q/8Q, Simcom SIM68V Accelerometer MMA8552 (or MPU-6050/MPU-9050) Solar panel controller Nano SIM holder 2 User LED 2 batter charge LED micro-USB for recharge and serial link to MCU Dimensions: 28x17x8 mm (photo without antennas, bettery and solar panel)...


Now released from prison
and I'm looking for a new jail


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