- Thu Sep 01, 2016 8:42 am
#54254
Confirm that the regulator ground lead is soldered well. Do an Ohm meter check from the terminal to the ground on the ESP module. Because it should work no mater what size pad you are using. If it was overheating it would limit the current by dropping the output voltage.
- Thu Sep 01, 2016 2:06 pm
#54274
I got it from Digikey so I am pretty sure it is the real deal (not pirated). This is the part on my order form https://www.digikey.com/product-detail/en/texas-instruments/REG1117-3.3-2K5/296-21321-1-ND/1242227 but they could have shipped me the wrong one, I suppose. No, the marking on the chip is BB11174, which the data sheet says is correct for the 3.3V version. The 5V one is BB11175. I am perplexed.
- Thu Sep 01, 2016 2:20 pm
#54276
Well, that's indeed strange,
Step1: Measure the connection of the leads to see if the connection is good.
Could you answer the following question:
1. What else are you drawing from your 3v3 regulator
2. What is the current you are drawing.
3. What is your input voltage.
Step1: Measure the connection of the leads to see if the connection is good.
Could you answer the following question:
1. What else are you drawing from your 3v3 regulator
2. What is the current you are drawing.
3. What is your input voltage.
Kind Regards,
Orcanbull
Yes i can help you , Yes you can send me a PM with a question - No i won't make the code for you
Orcanbull
Yes i can help you , Yes you can send me a PM with a question - No i won't make the code for you
- Thu Sep 01, 2016 2:45 pm
#54282
At first, it was just the ESP8266 12-F. I tried with three identical boards. The connections are all good on all three. Nothing else is connected to 3.3V except the 12-F. It is connected directly thru the VCC pin and there are three pins on it that are tied to 3.3V thru 3k9 resistors (RES, EN, and GPIO2. I do not know how to measure the current draw. The input voltage is 5.9V.
Then I made a board and left everything off except the VR. I connected the 6V battery to the board and measured the voltage in and out. Exactly the same thing.
Orcanbull wrote:Well, that's indeed strange,
Step1: Measure the connection of the leads to see if the connection is good.
Could you answer the following question:
1. What else are you drawing from your 3v3 regulator
2. What is the current you are drawing.
3. What is your input voltage.
At first, it was just the ESP8266 12-F. I tried with three identical boards. The connections are all good on all three. Nothing else is connected to 3.3V except the 12-F. It is connected directly thru the VCC pin and there are three pins on it that are tied to 3.3V thru 3k9 resistors (RES, EN, and GPIO2. I do not know how to measure the current draw. The input voltage is 5.9V.
Then I made a board and left everything off except the VR. I connected the 6V battery to the board and measured the voltage in and out. Exactly the same thing.
