Steve’s latest project, a wireless MQTT battery monitor: This board uses an ESP8266 (ESP12), a Texas Instruments INA226 I2C voltage and current monitor, and a Texas Instruments LMR12010X buck converter. This board is designed to wirelessly monitor 12 volt batteries and power...

Armadillo 43T integrates a 4.3" TFT display, resistive touch panel and a single board computer with Linux OS into one compact unit. Armadillo 43T is suitable for everyone, who needs a complete microcomputer with a display – “all in one solution”. Armadillo 43T is driven...

This project primarily consists of four units: Microchip Technology's SST89E54RDA-40-C-PIE, a sensor unit, an ADC0804 ADC component and the LCD module. Along with detecting an obstacle, its exact distance is also calculated and displayed on a 16x2 LCD interfaced to the...

by Archie500 @ instructables.com: In a very brief summary it works as follows: The Raspberry Pi uses SNMP (Simple Network Management Protocol) to get the WAN data rates from the router and then displays these graphically on the OLED screen. The Raspberry Pi was already set up as...

by hackarobot.com: Recently, I built an energy harvesting circuit based on an ultra low voltage DC/DC step up converter chip (LTC3108) from Linear Technology. With a 1:100 coil transformer (CoilCraft LPR6235), it converts the tiny voltage generated from Peltier thermo-electric...

This is a review of the Extech GX900 vs Fluke 287 Multimeter Extech Is owned by FLIR. Thanks to FLIR for providing the GX900 for this review. Extech GX900 vs Fluke 287 Graphical Multimeter Review -...

In this episode Shahriar reviews the Siglent SDM3055A (SDM3055) 5.5-Digit Multimeter. After a brief look at the instrument’s datasheet, a full teardown is presented. The instrument utilizes a two-board design and a large LCD screen. The SDM3055A provides a comprehensive set of...

by Scullcom Hobby Electronics @ youtube.com This is part 2 of the building a function generator. We cover the output stage and discuss some changes to the original design. Finally, we build the project in to a case and test. Below are the links to the latest main schematic diagram...