Inside the SDS7012 Oscilloscope: Mainboard Analysis
https://www.electronics-lab.com/inside-sds7012-oscilloscope-mainboard-analysis/
Christer Weinigel has been tinkering with an OWON SDS7012 o’scope, including deciphering the device’s OS and even disassembling the bootloader. Now it’s time to dive in and examine the mainboard, physically, with many of the board’s sub-circuits explained. via adafruit.com Except for soldering some wires to the JTAG and serial port on the scope, most […]
Wireless Weather Station using Arduino Due, DHT22 sensor and NRF24L01+
https://www.electronics-lab.com/wireless-weather-station-using-arduino-due-dht22-sensor-nrf24l01/
educ8s.tv uploaded a new project on youtube. In this video we build a Wireless Weather Station using the fast and powerful 32bit Arduino Due board. We measure the temperature and the humidity with a couple of DHT22 sensors and we communicate with the remote sensor using the 2.4GHz NRF24L01+ module. Let’s see how to build […]
Count down timer for UV lamps using PIC16F887
https://www.electronics-lab.com/count-timer-uv-lamps-using-pic16f887/
Here is a countdown timer for UV exposure lamps @ cuteminds.com Here follows a simple count down timer useful for the production of pcbs using photoresist and UV lamps. We have used a pic 16F887 Microchip microcontroller; there are no particular reasons, we have simply used the picmicros available at the moment. Count down timer for […]
High Current Discrete Half-Bridge Based on IR2104 or IR2101
https://www.electronics-lab.com/high-current-discrete-half-bridge-based-ir2104-ir2101/
This is a discrete Half-bridge driver based on IR2104 gate driver IC and low impedance high current N channel IRFP4368 MOSFETS. The IR2104 is a high voltage, high speed power MOSFET driver with independent high and low side referenced output channels. HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is […]
Dynamic-load circuit determines a battery’s internal resistance
https://www.electronics-lab.com/dynamic-load-circuit-determines-a-batterys-internal-resistance/
by Jim Williams @ end.com The simplest model of a battery comprises an ideal voltage source that connects in series with a resistance whose value—often a few milliohms—depends on the battery’s electrochemical condition and construction. If you attempt to use an ordinary ac milliohmmeter containing a kilohertz-range ac excitation source to measure a battery’s internal […]
16 Channel InfraRed remote controller
https://www.electronics-lab.com/16-channel-infrared-remote-controller/
16 Channel Infra-Red remote controller is based on PIC16F73 Microcontroller from Microchip. The receiver part follows RC5 (Philips) Code Format. Tiny receiver provides 16 latch outputs or 8 Latch + 8 Momentary outputs by closing Jumper J1. All outputs are TTL and can drive Relay board or solid state relay. The circuit uses TSOP1738 Infra-Red […]
Consolite – a Tiny Game Console on an FPGA
https://www.electronics-lab.com/49620-2/
Robert Fotino has design a video game system on a FPGA. He writes: For my latest project, I am diving back into Verilog to create the hardware side of Consolite. For those who don’t know, Consolite is the name I’ve given to my design of a tiny hobbyist game console and associated software toolchain. In […]
Butchered USB TTL Serial Adaptor
https://www.electronics-lab.com/butchered-usb-ttl-serial-adaptor/
Aaron Brady writes: We popped open the case, and there were two main ICs, a Prolific 2303 (the USB to Serial IC) and a ADM3251E (the RS232 line level convertor). I tried to desolder this with no success, but Bas stepped in, cut the leads with a craft knife and ran the iron over the […]
Learn how to play sound with Arduino by building a DIY Micro Piano
https://www.electronics-lab.com/learn-play-sound-arduino-building-diy-micro-piano/
In this video we are going to learn how to make sound with Arduino. We are going to build a simple Micro Piano in order to demonstrate the capabilities of the tone function. Let’s start! Playing back sound is great for adding audio feedback to our projects. So far we were using displays or LEDs […]
WiFiRGB – A WiFi-enabled RGB high-power LED
https://www.electronics-lab.com/wifirgb-wifi-enabled-rgb-high-power-led/
Tom blogged about his WiFi/Browser controlled RGB LED project: Features Simple hardware, using pre-fabricated modules Controls an RGB LED via any recent browser, any operating system WiFi credentials can be configured via browser Software is written as an Arduino sketch WiFiRGB – A WiFi-enabled RGB high-power LED – [Link]