Our RGB matrix panel driver shield for Arduino Uno has been slightly revised. The shield now also carries the DS1307 RTC chip on board along with a CR1220 coin cell battery holder on the back. It is applicable for driving popular 16×32 RGB matrix panels with HUB75 (8×2 IDC) connectors. Row and column driver circuits are already […]
16×32 RGB Matrix Panel Driver Arduino Shield Read More »
You will need: TPP2, TPP2(G2), TPP3, or TPP3(G2) board One Tibbit #57 One Tibbit #20 Optionally, one Tibbit #00-3 (if you are going to power your smart LEDs from your TPS system) Several SK6812RGBW LEDs (or a board, or a LED strip containing these LEDs) Optionally, one Tibbit #10 (12V->5V regulator) Optionally, one Tibbit #18
Test application for the FPGA Tibbit in the smart LED controller configuration Read More »
Usually, when measuring a child’s height at home, a mark is drawn on the wall then the height is measured using a measuring tape. This process is not always easy and it may has low resolution. In an attempt to simplify this procedure, a new project was developed using an Arduino and a distance sensor.
Using VL53L0X With Arduino to Measure Height Read More »
A recent ebay fishing expedition yielded an interesting little part for the very reasonable sum of about five pounds. It’s a voltage regulator module from a Dell PowerEdge 6650 Xeon server. I originally bought this because I had the idea of salvaging parts from it to use in another project. These are high quality modules
Reverse engineering a server CPU voltage regulator module Read More »
My Sonicare electric toothbrush recently quit working, so I took it apart and examined the interesting circuitry inside. There’s much more complexity than I expected inside a toothbrush, especially in the mechanism that drives the brush head at 31,000 strokes per minute. Internally, the brush appears to be designed for quality rather than ease of
Sonicare toothbrush teardown: microcontroller, H bridge, and inductive charging Read More »
Features Wide Input Voltage Range: 1.4V to 40V 1 Resistor Sets Output Voltage: 0.4V to 32V Output Current: 2.1A ±2% Tolerance Over Line, Load and Temperature Output Current Monitor: IMON = IOUT/1000 Temperature Monitor with Programmable Thermal Limit Programmable Cable Drop Compensation Parallel Multiple Devices for Higher Current Dropout Voltage: 330mV 1 Capacitor Soft-Starts Output and
The 700V and 800V CoolMOS™ P7 product families have been developed for flyback based low power SMPS applications including adapter and charger, lighting, audio SMPS, AUX and industrial power. The latest 600V CoolMOS™ P7 family completes the portfolio by offering the third voltage class of the P7 platform, that in contrast to the 700V and
The new 800V CoolMOS MOSFET from Infineon Read More »
This Design Idea presents a low power short circuit finder that capitalizes on the ear’s sensitivity to changes in frequency. The heart of the circuit is a voltage-to-frequency converter (based on Linear Tech’s AN45, Figure 13, by Jim Williams), which converts millivolt-level DC voltages to a wide range audio frequency output. The excitation signal is
Short circuit tracer uses low power Read More »
Further to my instructable 12V NE555 PWM Controller for Under $3 I have designed and built a simple and cheap DC Motor Direction Controller that can either be used with the PWM Controller, for speed control or by itself with a 12V power supply. I designed this DC Motor Direction Controller so that I could
L293D Motor Direction Control for Under $2.20 Read More »
A smart bulb is an internet or Bluetooth-capable LED light bulb that allows lighting to be customized, scheduled and controlled remotely. Smart bulbs are among the most immediately successful offerings in the growing category of home automation and Internet of Things (IoT) products. In today’s market many types of smart bulbs are available form price
Convert $2 LED Lamp to $50 Smart Lamp Read More »
