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.… Read More
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 monitored with a shunt
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!… Read More