www.earthouses.co.uk/tag/lime-render/ www.greenspec.co.uk/building-design/woodfibre-retrofit/ www.grandishdesigns.co.uk/external-insulation/ www.maverickmansions.com/ www.mikewye.co.uk/gallery/insulating-render/ – Great Read, East Devon Firm www.lime-green.co.uk/products/lime-render/finish-WP www.littlegreene.com/paint/finish/limewash billus.co.uk/wp-content/uploads/2019/07/techpaper14-keeping-warm.pdf
Big power advantages exist for using the ULP ( Ultra Low Power ) processor for regular tasks like recording a state change from a GPIO or ADC input, storing the information within the RTC memory, then waking the main CPU up when the information needs to be transmitted via Lora. The programming of the ULP can now be done via a simple MicroPython wrapper: github.com/ThomasWaldmann/py-esp32-ulp/ github.com/micropython/micropython/pull/3578 ULP examples github.com/espressif/esp-iot-solution/tree/master/examples/ulp_examples LoBo MicroPython for ESP32github.com/loboris/MicroPython_ESP32_psRAM_LoBo/wiki/rtcgithub.com/loboris/MicroPython_ESP32_psRAM_LoBo/wiki adds RTC.read and RTC.write NB: Still looking…
Sheepstor to Red Lake loop
Using power resistors is not feasable, but AC halogen bulbs are easily sources up to 500W , so multiple bulbs can be used to vary the current 120 Vrms 500 bulb watts 28.8 bulb resistance 52 battery voltage 93.88889 watts 1.805556 amps So on a 52V battery pack a 500w halogen bulb would draw about 1.8Amps Voltage can be monitored with a simple voltage divider to lower the 52V to something suitable ( < 3v probably ) Current can be…
Heltec – LoRa Node 151< 2uA sleep heltec.org/project/lora-node-151/ docs.heltec.cn/download/LoRa_Node_151.pdf docs.heltec.cn/#/en/products/lora/lora_node/heltec_lora_node_list_eu Bugger the Node 151 is not ESP32 and so is using different code! grrrr below is a simple codebase for there heltec.org/project/wireless-stick-lite/ github.com/HelTecAutomation/ESP32_LoRaWAN LoRaWAN module in Cgithub.com/mcci-catena/arduino-lmic#supported-hardware www.dragino.com/products/lora.htmlwww.robotshop.com/en/dragino-technology.html www.thethingsnetwork.org/forum/t/which-module-has-the-lowest-sleep-current/15622 …… Murata’s CMWX1ZZABZ (STM32L082 and SX1276)github.com/kriswiner/CMWX1ZZABZ hackaday.io/project/35169-hackable-cmwx1zzabz-lora-devices wireless.murata.com/type-abz.html shop.sodaq.com/868-915-mhz-lora-lorawan-module.html Grasshopper LoRa/LoRaWAN Development Board www.tindie.com/products/tleracorp/grasshopper-loralorawan-development-board/ £32STM32L082 Development Board with SX1276 LoRa Radio programmable using Arduino IDE via USB Connector RAK811 868Mhz LoRa LoRaWAN Module www.rakwireless.com/en/module/lora/RAK811 downloads.rakwireless.com/en/LoRa/RAK811/Hardware_Specification/RAK811_LoRa_Module_Datasheet_V1.4.pdf www.tindie.com/products/kilobyte/rak811-868mhz-lora-lorawan-module/ £17Standard original RAK Wireless RAK811…