piman wrote: Hi is it possible that someone could tell me what the minimum and maximum ampage is of the ESP8266, and are they all the same regardless of which model
Mode Min Typ Max Unit
Transmit 802.11b, CCK 1Mbps, POUT=+19.5dBm 215 mA
Transmit 802.11b, CCK 11Mbps, POUT=+18.5dBm 197 mA
Transmit 802.11g, OFDM 54Mbps, POUT =+16dBm 145 mA
Transmit 802.11n, MCS7, POUT=+14dBm 135 mA
Receive 802.11b, packet length=1024 byte, -80dBm 60 mA
Receive 802.11g, packet length=1024 byte, -70dBm 60 mA
Receive 802.11n, packet length=1024 byte, -65dBm 62 mA
Standby 0.9 mA
Deep sleep 10 uA
Power save mode DTIM 1 1.2 mA
Power save mode DTIM 3 0.86 mA
Total shutdown 0.5 uA
I think power supply is the same for all models. Difference is only in number available GPIO pins.
Thank U EasyIoT, am I right in thinking that a 250 mA voltage regulator at 3.3 V is more than enough, and also protects the ESP from overpowering therefore keeping it within safe working parameters .
If you take a look at the Adafruit HUZZAH breakout for the ESP8266, they spec'd a 250mAh 3.3V regulator with an enable pin. Looks like they are going for a battery powered setup with the ability to cut the power at the regulator.
I'm using AMS1117 regulator. It's more then enough for ESP8266. 10pcs is less than 1$. Finished modules with AMS1117 are also available. For power source I'm using phone charger. Here are some links for power supply:
If you plan to use battery then you usually do not need regulator. For HW power save mode put CH_PD pin to 0 -> this disables ESP and power consumption is really low, suitable for battery powered devices .