hcheung
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Wifi Scanning code for esp32 wroom 32
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You are not doing it correctly. In order to perform WiFi scan: It must be in WIFI_STA mode; It has to be disconnect from the AP; After you done with the scanned SSID, BSSID and RSSI, you need to ...

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Sending multiple data with SPI interface monitored by an Osciloscope
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SPI.transfer(&test[i],4); The SPI.transfer() transmit one byte each time and therefore expecting a pointer to a byte (i.e. uint8_t) while you are passing in an address of an uint32_t. What you ...

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arduino parking lot
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You can connect multiple devices or modules to the same 5v pin, as long as it does not exceed the maximum current that the on-board 5v regulator can handled. If you are using a genuine Arduino Uno, it ...

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Smallest microcontroller?
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I made a Arduino develop board with ATtiny3217, it has a 24-pin VQFN form factor, but as powerful as ATmega328p, with no external crystal and capable running at 20MHz. If this is not suitable for you, ...

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How to pass a changing value to a graphic display using Arduino?
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You didn't mentioned how you convert the floating point value Tc to a string before passing it to dog_7565R::string, but if you are using sprintf(), by default Arduino has the sprintf() support for ...

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Increasing distance of IR remote / transmitter
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Judging form the picture of the IR breakout board you shown, it seems that the board is drive the LED directly via Arduino GPIO pin. The current of the GPIO pin could supply is typically around 20mA @...

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Arduino Blink two LEDs without Delay(amount of repetitions)
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I'd like to proposes a couple of changes to @VE7JRO's implementation. For C++, it is perfectly normal to initialise an Class instance via its construct, however, for Arduino, the setup() get call in ...

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