Shared Projects

PMT_voltage_divider

USB Solar Charger

APM Led Buzzer Module V2A $7.40 per set of three Shrunk down & added rear solder pads Thicker Traces

Completed boards http://www.rcgroups.com/forums/showthread.php?t=2123269

Tube power board: Designed for 2 toroidal PCB mount xfrmers. The first in parallel to step down 120 V AC to a low filament voltage (12 V AC) This lower voltage is rectified and then has 2 adjustable LM317 regulated voltage outputs (designed for 9 & 12.5 V.) 4 jumper configured auxillary outputs. Switchable HV supply is provided through 2nd xfrmer in series (~280 V depending upon load and xformer power)

Compressor/OD board: Uses 2 12A(X/Y/U)7 tubes, with off board switchable compression and overdrive stages. Compression stage implements a variable-µ gain through the 2 LDRs (either LED or Lamp) which can be jumper configured to adjust the input bias (load-point) or the plate voltage to the compression stage. Internally adjustable Bandaxall tone stage as well.

External pot adjusted OD & compression levels as well as output level for each stage.

Contact me for more info and/or schematics:

facebook.com/studioBelec

USB to serial using Microchip MCP2200

Eagle schematics

Microfluidic Valve Controller Version 4

Order_ASAP

Dual-Single DC/DC Converter You can view/download the documentation file here.

Direction finder (time difference of arrival)

Control DC motor with PWM signal.

This teaches how timers work and how they behave.

Bluetooth enabled ericophone

Source Code: http://pastebin.com/i778MAHm

Pictures: http://flickr.com/photos/dwest2/sets/72157626365056152

Bluetooth PIDDYBOT

Shift register to 8x triacs

BoosterPack for TI LaunchPad. For more information see project log on 43oh

LED mount for CamCruiser folding quad airframe

BOM (per PCB):
6x WS2812B 5050 LED
6x 100nF/50V 0805size caps (i.e. Digikey 311-1140-1-ND)
1x JST S4B-ZR(LF)(SN) (Digikey 455-1671-ND)
1x JST ZHR-4(P) (Digikey 455-1202-ND)

ATTENTION: ARROW INDICATOR ON LED IS PIN1!!!

Released under creative commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) You are free to: Share: copy and redistribute the material in any medium or format The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms: Attribution: You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

NonCommercial: You may not use the material for commercial purposes.

NoDerivatives: If you remix, transform, or build upon the material, you may not distribute the modified material.

No additional restrictions: You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Notices: You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation. No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

THIS PROJECT IS PROVIDED “AS IS” AND WITH ALL FAULTS. NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS PCB. THE AUTHOR SHALL NOT, UNDER ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.

Includes two sensor inputs, solar panels and buck regulator with settable hysteresis. Runs on 0.550µA quiescent current, with wake up from power good interrupt. Able to harvest energy from included solar panels or from piezo input, while sensing on two ADC’s.