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5 votes
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What is this shield? (AST Space Arduino Kit)

My name is Bing Zhu. I the host of ASTSpace a community open lab sponsored by Zhejiang Association for Science and Technology(ZAST). AST is situated inside the Zhejiang Museum of Science and ...
Bing's user avatar
  • 66
5 votes
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How to measure resistance of TFT Touchscreen

As pointed out in other answers and comments, step one was trying to get a datasheet for this component. I couldn't find a datasheet for the shield, but here is the link from the vendor I bought it ...
jotadepicas's user avatar
5 votes

Is there an alternative to soldering to connect boards?

Yes, there are ways. There is a system called "Press Fit" where the pins have a bulge in one end of them. This grips the inside of the holes in place of soldering. A number of companies make them, ...
Majenko's user avatar
  • 105k
4 votes

Are there any advantages to Wifi shields as opposed to a Yun?

There's a number of things to consider that could sway your choice one way or another: Power consumption The Uno is a small low-power chip to which you add WiFi. The Yun is an Arduino Leonardo with ...
Majenko's user avatar
  • 105k
4 votes
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Trying to make a wattmeter

You will need an Ampere meter and a Voltmeter. Watts is Volt * Ampere. There are logic level compatible units out there for ampere meters ranging from a few mA to at least dozens of Amperes. Also ...
moestly's user avatar
  • 347
4 votes
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What are the unused pins in an Arduino L293D motor shield?

Check out this Link. Here, you can find this explanation in Code. I hope it will helpful for you. Pin usage with the Motorshield --------------------------------------- Analog pins: not used at all......
Hasan's user avatar
  • 1,476
4 votes
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Compatibility between shields

Its not just a question of the stackability of the shields and the clash of pins you also need to consider what the shields do. Stacking the GSM shield under the LCD is going to restrict is tx/rx ...
Code Gorilla's user avatar
  • 5,637
4 votes
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How can I know if I can stack some shield on another shield?

First you have to compare the pinouts of the two shields. If the shields use completely different pins then yes, you can use them together. However if they share pins then you need to look in more ...
Majenko's user avatar
  • 105k
4 votes
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Connecting CAT5 robustly between portable Arduino and more portable sensors

Certainly go for RJ45 sockets. Not only does it help protect the wire, but it gives you a really easy way of swapping the wire for different lengths should you want to. You can't solder an RJ45 ...
Majenko's user avatar
  • 105k
4 votes

Can you help me trim my code?

The documentation for the MCUFRIEND_kbv project has a file describing how to use. This document has the statement: Most of these controllers are #define SUPPORT_xxxx by default. You can save Flash ...
jose can u c's user avatar
  • 6,974
4 votes
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Can I use LiFe PO4 batteries in a 18650 battery shield?

In my opinion it is NOT SAFE, if your 18650 Battery Shield also charges the battery. Anyhow some pages state that it is possible to charge LiFePo4 batteries with 4.2V instead of the recommended 3.65V. ...
Kwasmich's user avatar
  • 1,513
4 votes

Need some Hardware advice with arduino

To process incoming images, voice commands, produce sounds, and also do WiFi is almost certainly beyond the capabilities of any micro computer, like the Arduino (maybe some of the more recent models ...
Nick Gammon's user avatar
  • 38.3k
3 votes

Disconnect Ethernet Shield

You have correctly determined the root of the problem, both shields are trying to use the same pins. To work around this we need to know which pins are being used, and for what. The Ethernet Shield ...
djbeadle's user avatar
3 votes
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Arduino uno + cnc shield v3 + Stepper Motor Driver A4988 + AccelStepper?

Manually set the ENABLE pins as OUTPUTs, i.e. add in the setup() function: pinMode(MOTOR_A_ENABLE_PIN, OUTPUT); pinMode(MOTOR_B_ENABLE_PIN, OUTPUT);
Esteban Garcia-Gurtubay's user avatar
3 votes
Accepted

Arduino GPRS (GSM) shield (SIM900) no long pins

Yes, you can. There is two methods of making shields stackable: Use the quite hard to source extra long pinned headers to go right through and down (such as these https://www.adafruit.com/products/...
Majenko's user avatar
  • 105k
3 votes
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What happens if I try to draw power from the VIN port while under USB power on an Uno?

You do run the risk of damaging the 5V regulator, yes. Power will attempt to flow from the 5V rail (USB port) through the voltage regulator (backwards) and into the shield to power it. As your ...
Majenko's user avatar
  • 105k
3 votes

Who makes this cool Arduino display shield, and what model is it?

That will be an SSD1306 based blue OLED display with SPI interface. There's lots of them around by lots of different people. Some are I2C interface, and some of those have a "broken" I2C interface ...
Majenko's user avatar
  • 105k
3 votes

Following on ESP8266 Board pins, how do they map on the motor shield?

You see the pins marked PWMA, PWMB, DA and DB? Those are the pins that control the motors (PWMx is the speed, Dx is the direction). Whatever pins on your ESP8266 board plug into those holes are the ...
Majenko's user avatar
  • 105k
3 votes
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USB DEVICES WITH THE 32U4?

Some important facts: The 32U4 cannot act as a USB master, only a USB device (it doesn't have a USB OTG interface). The USB shield is an SPI based device. It can communicate with any host MCU that ...
Majenko's user avatar
  • 105k
3 votes
Accepted

Arduino Mega vs servo shield

The idea of that particular servo shield is that it provides 16 PWM (pulse width modulation) channels. These are all operated simultaneously with no additional processing overhead on the Arduino. ...
Ghanima's user avatar
  • 459
3 votes
Accepted

Do all arducam need the "Arducam-F Shield"?

You have three requirements: Good quality (colour) High resolution Fast operation Those three requirements together mean you cannot use a normal Arduino. The Arduino has nether the memory nor ...
Majenko's user avatar
  • 105k
3 votes

mcufriend 2.4 TFT with ESP8266

You have an 8-bit parallel interface TFT display. It requires 13 GPIO pins - D0-D7 plus reset, chip select, read, write and register select. You can forego the "read" signal and tie it high to save a ...
Majenko's user avatar
  • 105k
3 votes

mcufriend 2.4 TFT with ESP8266

SD_DI is the MOSI, and SD_DO is the MISO. According to the datasheet.
RazurBeam's user avatar
3 votes
Accepted

Arduino Ethernet Shield 2: How can I automatically determine the MAC Address?

No, the W5500 chip does not have a mac address. You can give it any mac address that you want. The router might not like some mac addresses though. There are online mac address generators. The ...
Jot's user avatar
  • 3,246
3 votes
Accepted

Can you help me trim my code?

I assume you mean that are running short of flash memory, rather than RAM. I base this assumption on the fact that you say that it's 99% full, and that this “is not very troublesome”. Filling 99% of ...
Edgar Bonet's user avatar
  • 43.3k
3 votes

Can an Arduino Pro Mini interface with a full-sized WiFi shield?

I would like to know if they can be connected and, if so, how. Yes. but can we place the shield on the breadboard No, the pins are misaligned and won't plug in. and use jumper wire to connect ...
Majenko's user avatar
  • 105k
3 votes

Need some Hardware advice with arduino

Your main bottleneck here is the camera. If you want to do real time video, I would suggest getting a Raspberry Pi or the equivalent then using it as a master over something easier to code like an ...
Marianne Primeau Breton's user avatar
3 votes

How to remove Arduino Due and Mega shields without bending pins?

You could modify a couple of wooden clothes pegs to act as reverse pliers. (source: niceshops.com)
jsotola's user avatar
  • 1,515
3 votes

Can I use Data Logger Shield with Arduino Sensor shield V5.0?

The 'data logging' shield by Adafruit and Deek Robot has two devices. First device is the SD card which uses SPI bus. Every SPI device on the SPI bus has to have a select pin CS. On this shield the SD ...
Juraj's user avatar
  • 18k
3 votes

Arduino shield stacking issue

Both those boards use pin 10 for chip select by default. You will need to change that. Probably the simplest one to change is the LoRa board. If you look at the WiKi page you link to it lists a set of ...
Majenko's user avatar
  • 105k

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