http://www.faludi.com/bwsn/xbee-level-shifting/ The XBee communication (RX/TX) pins definitely operate off of a 5V signal with the Arduino. We’ve seen this a lot and done this a lot, and it certainly keeps things simple. That said, there’s nothing wr…

Google : Op-Amp Level Shifter Level shifting a +/- 2.5V signal to 0 - 5V I have a front end module that generates an (ECG) signal that varies from +/-2.5 V. I want to shift this signal to 0 - 5V. What is the best way to do this? First thing to try is…

Driver Amplifiers For Analog-To-Digital Converters What amplifiers are used to drive analog-to-digital converters (ADCs)? Possibilities include single-ended and differential inputs and outputs, plus voltage feedback (VFB) or current feedback (CFB) in…

OSBDM-JM60 - 9S08JM60 Based OSBDM — It includes interfaces and firmware applied to all the targets supported by the previous open source BDMs. It includes new features and JTAG operations. It provides interface to 9S08, 9RS08, Coldfire V1, V2, V3 and…

https://en.wikipedia.org/wiki/Joint_Test_Action_Group In JTAG, devices expose one or more test access ports (TAPs). The picture above shows three TAPs, which might be individual chips or might be modules inside one chip. A daisy chain of TAPs is call…

The BGND interface provides the standard 6 pin connection for the single wire BGND signal type development port.   Target types that apply this development port are the 9S08, RS08, and Coldfire V1.   +V_TRG, TBGND, TRG_RST*, and Ground are applied by…

The most common switching-power topology is a buck converter, which efficiently transforms high voltages to low voltages. Figure 1 shows a typical buck converter in which the N-channel MOSFET, Q1, needs a floating-gate drive signal. The floating-gate…

http://electronicdesign.com/boards/non-inverting-level-shifter-requires-only-one-op-amp-one-supply-voltage With portable battery-operated devices continuing to add functionality while shrinking in size, printed-circuit-board real estate becomes incre…

从别的地方导入一个项目的时候,经常会遇到eclipse/Myeclipse报Description  Resource Path Location Type Java compiler level does not match the version of the installed Java project facet.出现这个问题的原因是因为,eclipse/myeclipse的jdk编译版本与出现问题的项目JDK编译版本不一致所导致! 1.先设置好jdk,需要确定 项目,eclipse/m…

今天在导入工程进Eclipse的时候竟然出错了,控制台输出的是: [2013-02-04 22:17:13 - takepicture] Android requires compiler compliance level 5.0 or 6.0. Found '1.4' instead. Please use Android Tools > Fix Project Properties. 解决办法: 1. 项目 右键 ->android tools ->Fix Project 2. 如果…