I just bought a mosfet module, when I code high low why won't the mosfet work?
Let's just say it's a 5V battery, I used the wrong battery example
Showing the code will help. The top module appears to be a NANO, but you need to tell us. The middle is labelled as an esp-01 but the left hand module is a total mystery, you need to supply more information.
Can't you see the module above clearly?
Mosfet HW-532A
ESP01 Adapter
STM32 Bluepill
No code needed, I just followed the code in making a regular Relay
It is doing what it should, not work. It has a minimum voltage specification. Have you looked at the specifications? Here is a schematic: https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse4.mm.bing.net%2Fth%3Fid%3DOIP.OUKTK2WYGQ_cDDZWVnKDQwHaFj%26pid%3DApi&f=1&ipt=fd0140cac8eb10356d2542a78c25d3957b712f3d839eef28c7572d73386c716f&ipo=images Here is a link to the MOSFET data sheet: file:///home/gil/Downloads/IRLR7843.PDF
I cannot follow your picture it is missing to much information.
I followed this circuit, it says 6v input but I put 5v in, I joined the ground
Why?
It seems you want to switch an ESP-01 on/off.
Did you try connecting the STM32 output pin directly to the EN pin of the ESP.
Leo..
That is like giving a 5 year old the keys to the car and telling them to drive across country but fill the fuel tank with water before leaving. The minimum voltage is there for a very important reason. If you chose to go less it may not work or more then likely fry the MOSFET with a relative small load.
That voltage (6V / 2 = ~3V) is the minimum required to enhance the MOSFET. By putting 5V you are driving the gate with ~2.5 volts, look at the data sheet. That voltage is divided by ~2 before being applied to the gate.
I use this adapter, the downside is that if the battery is below 4.5V, the esp01 won't turn off immediately, the lights on the esp01 become dim. That's why I want to use mosfet for switch.
The problem is the AMS1117 regulator on that module.
It has a dropout voltage of about 1.2volt, so if you power the ESP-01 through that module then you must give it at least 4.5volt. You shouldn't use that module with a single LiPo cell.
Why an STM32 and a WiFi board. Can't you use a WiFi board that has a LiPo connector included.
Leo..
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And you thought the MOSFET was tough! Connect everything as it should be and supply what they require not what you think. I would expect that at that point things will begin to work. As far as that adapter do not power it from an Arduino use an external power supply..
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