Preview – IRF520N MOSFET on Board

This small board has no more than an IRF520N MOSFET transistor, an LED, and two resistors on board, not counting the terminals. However, it allows for switching larger loads via a microcontroller. What is a preview: As I am increasingly losing track of the ordered hardware, I will after…

Continue reading "Preview – IRF520N MOSFET auf Board"

ESP32 Relay Board

For another project, I needed relays to be able to switch a couple of pumps. This is where the ES32 boards caught my eye on AliExpress. They come completely ready to use and some even have a 240V power supply on board. CAUTION: Although the programming port on the boards is marked as 5V, the fact that my boards…

Continue reading "ESP32 Relay Board"

Preview – TT Motors with Hall Sensor

I was particularly looking forward to this delivery. It's now a replacement for the standard yellow craft gear motors. These come in two variants, one with plastic and one with metal gears. I ordered them as a set with a bracket, cable, and connectors from AliExpress. The price is around €10 each and it is...

Continue reading "Preview – TT Motoren mit Hal Sensor"

Preview – Arduino Motor Shield with L298P

Found another motor shield on AliExpress, this one has an L298 motor driver. What's interesting is that the braking function and current measurement are brought out. What is a preview: As I'm losing track of the ordered hardware more and more, I'll write a small preview after ordering. Then, when I get to the hardware...

Continue reading "Preview – Arduino Motor Shield mit L298P"

ESP01 – Relay Board

This is a circuit board with a slot for the ESP01 and a relay for switching external voltages of up to 250V AC and 30V DC. On AliExpress, these boards start at around €2 without the ESP01, and are available in sets for around €3-4. As home automation and voice assistants are in...

Continue reading "ESP01 – Relais Platine"

D1 Mini Shield – HR8833 Motor

Expansion board for the D1 Mini, compatible with a driver for two motors. Facts Description Name Pin I²C Clock SCL 5 (D1) I²C Data SDA 4 (D2) Motor A Connection 1 1A Motor A Connection 2 2A Motor B Connection 1 1B Motor B Connection 2 2B External Voltage VM (3 -10V) VM External Voltage GND GND I²C …

Continue reading "D1 Mini Shield – HR8833 Motor"

D1 Mini Shield – AT8870 Motor

Motor control board for controlling two motors (6.6V – 38V) via the I²C bus. Facts: Supply voltage 6.6V – 38V. Maximum continuous current 2A (briefly up to 3.6A). Controls: Forward/Reverse (speed), Stop/Brake. Description: Name, Pin, I²C Clock, SCL, 5 (D1), I²C Data, SDA, 4 (D2), Motor A Connection 1, 1A, Motor A Connection 2, 2A, Motor...

Continue reading "D1 Mini Shield – AT8870 Motor"

Sunflower

Like a sunflower, this project stretches its bloom (solar panel) towards the sun. A laser-cut wooden frame with a bit of technology and you have a project that will excite not just children. The model can be found on the „quick“ Ali-Express under the term "Arduino Intelligent Solar Tracking" for around €25-50. After a quick search on the internet, I found...

Continue reading "Sunflower"

Zumo V1.2

I've had the Zumo for a few years now and just rediscovered it in a box. So I thought it would be nice to write a bit about it. The Zumo is a small mobile platform onto which you can directly plug an Arduino Uno or Leonardo. It has two motors and a few sensors…

Continue reading "Zumo V1.2"