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18 Questions

Votes Activity Newest Views

votes

answer

views

ESP8266 - free GPIOs for relay switching

esp8266

Jan 15 '20 at 18:55 Juraj 614

vote

answer

views

ESP8266 - should Vin pin supply 5V?

esp8266 nodemcu

Oct 9 '18 at 17:55 SamGibson♦ 15.7k

votes

answers

views

Solar charging a 18650 Battery ( MPPT vs TP4065 )

solar-energy mppt

Apr 16 at 5:43 Guy . D 155

votes

answers

views

Using a KA75330ZTA voltage detector

voltage solar-energy

Jan 8 at 12:49 Guy . D 155

votes

answer

views

Powering externally a 3v a 2 relay module

power-supply esp8266

Jan 7 at 17:48 ocrdu 3,794

votes

answers

views

Selection of DC-DC converter for boosting 4.2V to 5.0V

dc-dc-converter

Aug 7 at 20:10 JRE 48k

votes

answer

views

Heating up using an LM317 voltage regulator

voltage-regulator

Jul 4 at 19:20 JRE 48k

votes

answers

319

views

ESP32. - selecting resistors for voltage divider

voltage-divider

Jun 19 at 5:09 Guy . D 155

votes

answer

127

views

Using MCP1700-3302E LDO for Arduino/ ESP32 Solar projects

voltage-regulator power-electronics ldo solar-energy

Jun 15 at 7:19 bitbangers 7

votes

answer

views

External power to WEMOS mini using 3.3V 1W Zener diode

voltage-regulator

Apr 27 '20 at 5:52 JRE 48k

votes

answers

views

Voltage Regulator 317 - Selecting Resistors ( R1, R2 )

voltage-regulator

Apr 13 '20 at 18:39 Justme 50.2k

votes

answer

views

Is it possible to use a Zener diode as a High Pass Voltage

voltage switch-mode-power-supply esp8266

Feb 21 '20 at 9:15 User323693 8,876

votes

answer

views

NodeMCU v.1 / WEMOS Mini - Fail to Wake up from deep sleep

low-power esp8266 nodemcu

Jan 24 '20 at 7:08 Guy . D 155

votes

answers

views

Noisy or malfunctioning PIR HC-SR505 sensor

sensor pir

Nov 15 '19 at 13:10 SamGibson♦ 15.7k

votes

answers

162

views

How to select a MOSFET when using 3.3v / 5v Logic level [duplicate]

arduino mosfet esp8266

Sep 17 '19 at 17:12 Reinderien 2,358

votes

answers

360

views

Logic Level MOSFET IRLZ44N - under Wemos mini

mosfet logic-level

Aug 10 '19 at 16:12 Guy . D 155

votes

answers

views

ESP8266 - PULLUP resistor using Arduino code

arduino esp8266

Nov 3 '18 at 15:43 Juraj 614

votes

answers

174

views

OptoCoupler Relay and EMI - How to be sure it is not a “regular relay”

relay

Jul 18 '18 at 15:19 Jack Creasey 19.3k

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18 Questions

ESP8266 - free GPIOs for relay switching

ESP8266 - should Vin pin supply 5V?

Solar charging a 18650 Battery ( MPPT vs TP4065 )

Using a KA75330ZTA voltage detector

Powering externally a 3v a 2 relay module

Selection of DC-DC converter for boosting 4.2V to 5.0V

Heating up using an LM317 voltage regulator

ESP32. - selecting resistors for voltage divider

Using MCP1700-3302E LDO for Arduino/ ESP32 Solar projects

External power to WEMOS mini using 3.3V 1W Zener diode

Voltage Regulator 317 - Selecting Resistors ( R1, R2 )

Is it possible to use a Zener diode as a High Pass Voltage

NodeMCU v.1 / WEMOS Mini - Fail to Wake up from deep sleep

Noisy or malfunctioning PIR HC-SR505 sensor

How to select a MOSFET when using 3.3v / 5v Logic level [duplicate]

Logic Level MOSFET IRLZ44N - under Wemos mini

ESP8266 - PULLUP resistor using Arduino code

OptoCoupler Relay and EMI - How to be sure it is not a “regular relay”