Timeline for NodeMCU powered with battery and use WiFi
Current License: CC BY-SA 3.0
19 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 12, 2017 at 15:54 | review | Close votes | |||
| Nov 17, 2017 at 3:02 | |||||
| Nov 12, 2017 at 15:36 | comment | added | Chris Stratton | I'm voting to close this question as off-topic because it is about the ESP8266 hardware but about neither Arduino hardware nor Arduino-based development on alternate hardware. | |
| Nov 12, 2017 at 15:12 | answer | added | rumpel | timeline score: 1 | |
| Jul 13, 2017 at 8:01 | review | Close votes | |||
| Jul 20, 2017 at 3:06 | |||||
| Jul 12, 2017 at 15:00 | answer | added | Gaurav18ca | timeline score: 0 | |
| Apr 28, 2017 at 6:31 | answer | added | P0pR0cK5 | timeline score: 0 | |
| Apr 27, 2017 at 21:02 | answer | added | P0pR0cK5 | timeline score: 1 | |
| Apr 27, 2017 at 9:55 | comment | added | Majenko | Or use a zenner diode to clamp the voltage to within spec. | |
| Apr 27, 2017 at 9:52 | comment | added | rdiaz82 | In order to reduce the voltage to 3V maybe a diode could be added to drop the battery voltage from 3.7 to 3V | |
| Apr 27, 2017 at 9:28 | comment | added | dandavis | @Gerben: touche; I forgot 3.7!=3.7. a hybrid buck+boost set to 3.3 and connected to "3V" would be ideal in this precarious situation; minimal heat, forgiving input voltage (ex: 3.8-12). | |
| Apr 27, 2017 at 9:21 | comment | added | Gerben | You need to use a voltage regulator with a lower dropout. | |
| Apr 27, 2017 at 9:21 | comment | added | Gerben | @dandavis a full lithium battery is 4.2 Volt. I think this is far out of spec. | |
| Apr 27, 2017 at 8:46 | comment | added | rdiaz82 | This is a good approach, I will try this. My project is ported from another implemented with a D1Mini and I have realised that the LDO in the D1Mini is the TR9013 which has a voltage dropout maximum of 250mV. On the contrary the LDO on the NodeMCU is the NCP1117 and it has a output dropout around 0.9V at 100mA. | |
| Apr 27, 2017 at 8:03 | answer | added | John | timeline score: 0 | |
| Apr 27, 2017 at 7:40 | review | Close votes | |||
| May 1, 2017 at 0:10 | |||||
| Apr 27, 2017 at 7:34 | comment | added | dandavis | connect it to the 3V pin to bypass the LDO on VIN. A 3.7v Vcc is ok: barely within spec... | |
| Apr 27, 2017 at 7:22 | answer | added | Code Gorilla | timeline score: 0 | |
| Apr 27, 2017 at 7:17 | review | First posts | |||
| Apr 27, 2017 at 7:20 | |||||
| Apr 27, 2017 at 7:15 | history | asked | rdiaz82 | CC BY-SA 3.0 |