1. Introduction: I made a water level sensor a little while a go to measure the water level in my underground rainwater harvesting tank. Thanks to the Jubilee I found time to finally setup the first part of my Arduino/Xbee wireless sensor network and the first sensor node was also meant to read from this […]
Measuring a water tank level Read More »
Portable and easy to use development platform: iCE40 Ultra Wearable Development Platform features iCE40 Ultra FPGA and MachXO2 with sensors and 1.54” LCD display in a compact watch form factor for designers to implement and develop always-on functions for wearable applications. Powered via built-in battery or simple USB mini cable. Proof-of-concept demos: Several demos are
iCE40 Ultra Wearable Development Platform Read More »
H-Bridge has been designed around IR2104 IC from international Rectifier. The board has been made mainly for DC-Motor application. The driver can handle load up to 8-10Amps. I have tested this board with 36V DC supply . The circuit uses N Channel IR540 MOSFETS from international rectifier. IR540 requires large heat sink for 10Amps load.
DC Motor IR2104 H-BRIDGE Read More »
This Design Idea mates a precision current source IC with precision difference amp chips to create a programmable current source or sink. The resistor-programmable current source/sink in Figure 1 illustrates the basic topology, taking advantage of tightly matched on-chip resistor ratios instead of relying on absolute tolerances. he IIN current source gives rise to a
Precision programmable current source uses two ICs Read More »
Cortus, which licenses small 32-bit cores, has upgraded its instruction set and launched two new cores which use the new one. Why upgrade? “Embedded applications have got more complex,” replies Cortus vice-president Roddy Urquhart. The new V2 instruction set is 50% bigger than its V1 predecessor and the instruction memory uses about 20% less power, according
Cortus upgrades instruction set, launches two new cores Read More »
The DM320018 PIC32 bluetooth starter kit comes with demonstration code that allows it to communicate with smart devices that are bluetooth enabled. It features the PIC32MX270F256D MCU for central processing and the FLC-BTM805 dual-mode Bluetooth HCI module. The kit also contains Cree high output multi-color LED, three standard single color LEDs for display, five push
PIC32 Bluetooth Starter Kit; DM320018 Read More »
Experimenting with an HF oscillator, I needed to control the varactor diode voltage in precise increments over a 2V-10V range. A buffered potentiometer was the obvious choice, and connecting two pots in series to give coarse/fine control (or using a multiturn pot) would offer improved control over the varactor voltage. However, this approach still didn’t
Control accurate incremental voltage steps with a rotary encoder Read More »
The TJA1042 of NXP Semiconductor is a CAN transceiver with high-speed capabilities that provides a physical link between physical transmission medium and the protocol controller. The transceiver is designed for high-speed (up to 1Mbps) CAN applications in the automotive industry, providing the differential transmit and receive capability to a microcontroller with a CAN protocol controller.
CAN Transceiver for Automotive Read More »
Microcontrollers with USB interface are common nowadays. Manufacturers provide source codes for USB device classes like CDC, HID, Mass storage and DFU. . Even in this case, programming USB communications may not be a trivial task. If it is only required to replace RS232 serial interface to USB, is worth considering using of FTDI TF-X
Microcontrollers with USB interface are common, but… Read More »
Lumileds has started to make multi-LED area and line light sources, based around 3535L surface mount LEDs on ridged and flexible PCBs. It is making the area products, described them as its ‘matrix platform’, at its plant in Penang, Malaysia. Luxeon XR (below) is the name of the rigid line, and the flexies are Luxeon
Lumileds line and area sources for LED lighting Read More »
