Crossbar, the RRAM specialist, says it has solved a major obstacle to RRAM’s commercialisation – what Crossbar calls ‘sneak path current’ which is akin to leakage in CMOS circuits but particularly destructive in RRAMS. This, breakthrough, says a Crossbar press release: “Signals Crossbar’s 3D RRAM readiness for commercialisation of Terabyte storage-on-a-chip.” So how far away […]
Monolithic terabyte memory IC Read More »
This simple circuit designed around Solid State Relay S216S02 from SHARP. The S216S02 solid State Relay (SSR) is an integration of an infrared emitting diode (IRED), a Phototraic Detector and a main output Traic. These devices are ideally suited for controlling high voltage AC loads with solid state reliability while providing 4KV isolation from input
AC Solid State Relay Read More »
RF Probe Today I finally got round to building a nice little RF probe kit from Rex, w1rex, the Tuna King over at QRPme. I took the well-executed PCB which – unusually for Rex – had through hole mounting for the components rather than the ‘Limerick’ construction that recently I’ve come to associate with him…
m0xpd’s ‘Shack Nasties Read More »
Description The MAX30102 is an integrated pulse oximetry and heart-rate monitor biosensor module. It includes internal LEDs, photodetectors, optical elements, and low-noise electronics with ambient light rejection. The MAX30102 provides a complete system solution to ease the design-in process for mobile and wearable devices. The MAX30102 operates on a single 1.8V power supply and a
High-Sensitivity Pulse Oximeter and Heart-Rate Sensor for Wearable Health Read More »
Crocus, the magnetically enhanced IC specialist, has prototyped a bendable display using flexible sensors and is looking for applications and customers for it. “Crocus has created a new IP based on magnetic sensors for flexible surface position detection. This enables equipment makers to gain in the added performance of flexible shape devices, while reducing costs,”
Crocus sensors for flexible displays Read More »
In a long-needed move, LED standards body Zhaga has picked up the baton and started work on a specification for chip-on-board (CoB) LED arrays. A Zhaga Book will specify a family of six rectangular or square LED modules with different dimensions. The rest of the content is still being discussed (see below). CoBs are becoming
Zhaga moves on CoB standardisation Read More »
With the battery and the speaker pulled back we can see a MediaTek MT6261 SoC and supporting components on the left. On the right are connections for the reset button (mounted on top of the usb connector), speaker and what I assume is a vibrator motor connected to ‘VIB’. The touchscreen is also connected at
u8plus smart watch quick teardown and uart Read More »
Hey guys, I built another board, which is a 3-channel (RGB) LED driver based on an inexpensive chipset called PT4115 (you can find them on eBay or Aliexpress). The circuit is very simple and looks like Sparkfun’s PicoBuck. However, I used beefier components and a different chip. You may say it’s pretty much the same
Building a 3-channel, high power RGB LED driver Read More »
How can you count bits in hardware? In this article, I reverse-engineer the circuit used by the ARM1 processor to count the number of set bits in a 16-bit field, showing how individual transistors form multiplexers, which are combined into adders, and finally form the bit counter. The ARM1 is the ancestor of the processor
Counting bits in hardware: reverse engineering the silicon in the ARM1 processor Read More »
This design is a battery management circuit, which involves the use of CAN/LIN interface. The system addresses the matter about managing rechargeable batteries. This design features an 8-output hardware configurable, high side/low switch with 16-bit serial input control using the serial peripheral interface (SPI). Two of the outputs are directly controlled using a microcontroller which
Intelligent 4-Cell Lithium Battery Management with CAN/LIN Interface Read More »
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