View allAll Photos Tagged esp8266
Finished the temperature sensors which I now have around the house. Used a #protoshield for the #Wemos D1 mini with the #DS18B20 digital temperature sensor. Power is supplied via a #powerbank which has two 18650 Li-ion batteries recovered from an old laptop battery. With the Wemos in sleep mode most of the time and waking every 10 minutes to do the measurement and then going back to sleep, I get about 18 days battery life. I originally tried a Xiaomi powerbank, but because the current draw of the Wemos was so low when in sleep mode, the powerbank would think there was no load and turn off, therefore not allowing the Wemos to wake up! Ended up getting some battery holder/charger from eBay and they work a treat. Also needed to solder a resistor between D0 and the reset pin to enable the waking from sleep.
For the reporting/graphing, you can see the graph works for one channel, but I couldn't work out how to get multiple channels on one chart. Did some googling and came across a solution that uses HTML, JS and the Highstock charts, which after updating a couple of details to use my #thingspeak channels, it was running!
Many thanks to the following people for sharing their code to make this project possible for me.
Miika Pietila for the code for the Wemos: vaasa.hacklab.fi/2016/02/06/esp8266-on-nodemcu-board-ds18...
Jerome Bernard for the sleep code for the Wemos:
www.jerome-bernard.com/blog/2015/10/04/wifi-temperature-s...
turgo for the multiple channel charts:
forum.arduino.cc/index.php?topic=213058.0
#iot #esp8266 #electronics
Мне показалось что будет нормально, проволочка вроде как жёсткая, на деле же. Иногда бывают непонятки в работе прошивки, и серва уходит в упор, соответственно перегибая проволочку, и после этого среднее положение колёс уже не в среднем положении качельки, а уходил в сторону.
Надо что-то ещё придумать, более прогрессивное.
#redmi4a #ESP8266 #RC #techn0man1ac
Para el taller trabajamos con la placa NodeMCU, funciona como un Arduino con un módulo WiFi incorporado (esp8266)
My workshops were a shortened version of my "Arduino For Total Newibies", with an ESP8266 board and environmental sensors. We all had fun and learned a lot. I went to Brno, Czech Republic for 4 days to give 4 workshops at Maker Faire Brno -- two workshops for teaching teachers, and two workshops for anyone at the Faire.
Brno
October-2022
My workshops were a shortened version of my "Arduino For Total Newibies", with an ESP8266 board and environmental sensors. We all had fun and learned a lot. I went to Brno, Czech Republic for 4 days to give 4 workshops at Maker Faire Brno -- two workshops for teaching teachers, and two workshops for anyone at the Faire.
Brno
October-2022
My workshops were a shortened version of my "Arduino For Total Newibies", with an ESP8266 board and environmental sensors. We all had fun and learned a lot. I went to Brno, Czech Republic for 4 days to give 4 workshops at Maker Faire Brno -- two workshops for teaching teachers, and two workshops for anyone at the Faire.
Brno
October-2022