- Mon Dec 22, 2014 9:10 pm
#5485
When I pull CH_PD high, my power supply pulls down to 1.1v. The Esp8266 red light is turned off. Any suggestions?
- Tue Dec 23, 2014 3:46 am
#5503
You have bad power supply. You needs good one.
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Lets get the party started and +1
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Lets get the party started and +1
[url=https://www.banggood.com/custlink/KvGGhGF4wG[/url]
I like ESP8266 and ESP8285 and ESP32
- Tue Dec 23, 2014 9:01 am
#5535
You should probably try to pullup CH_PD with a resistor instead of connecting it to VCC.
Because, if for unknown reason, CH_PD is outputing an active low GPIO output, maybe you just shorting the power supply.
Because, if for unknown reason, CH_PD is outputing an active low GPIO output, maybe you just shorting the power supply.
- Wed Dec 24, 2014 2:40 am
#5580
I'm having a similar issue, but with multiple ESPs.
For a silly project, I want to have multiple ESPs on one breadboard.
I've been able to reliably power up two ESPs simultaneously. Three sometimes work. Four ESPs drops the power rail from 3.30V to as low as 2.40V typically about 2.80V.
I've tried putting pulling the GPIOs and CH_PD to vcc via 1K. That did not seem to help.
I also have two 100uF capacitors on the power rail.
Each ESP works fine by itself.
BTW, I'm using a 400W computer PSU. The label says 24A for the 3.3V.
UPDATE:
I'm now able to power up all my seven ESPs simultaneously! Here's what I did:
1. I use the 5V side of the PSU instead of the 3.3V, then use the AMS1117 3.3V LDO for each EMS
2. Even after adding the LDOs one of the ESPs weren't working. That turns out to be a bad LED. It lights up fine, but the ESP refused to launch my lua script.
3. One of my LDOs is not working, so I powered two of the ESPs using one LDO. Seems to work fine so far.
For a silly project, I want to have multiple ESPs on one breadboard.
I've been able to reliably power up two ESPs simultaneously. Three sometimes work. Four ESPs drops the power rail from 3.30V to as low as 2.40V typically about 2.80V.
I've tried putting pulling the GPIOs and CH_PD to vcc via 1K. That did not seem to help.
I also have two 100uF capacitors on the power rail.
Each ESP works fine by itself.
BTW, I'm using a 400W computer PSU. The label says 24A for the 3.3V.
UPDATE:
I'm now able to power up all my seven ESPs simultaneously! Here's what I did:
1. I use the 5V side of the PSU instead of the 3.3V, then use the AMS1117 3.3V LDO for each EMS
2. Even after adding the LDOs one of the ESPs weren't working. That turns out to be a bad LED. It lights up fine, but the ESP refused to launch my lua script.
3. One of my LDOs is not working, so I powered two of the ESPs using one LDO. Seems to work fine so far.
Last edited by hwiguna on Wed Dec 24, 2014 12:20 pm, edited 1 time in total.
