Here’s an AquaPinguino project by Susanne from Germany: She has built a system with automatic monitoring and control of every major water and lighting factors for her seawater aquarium. She made a double side board controlled by a Pinguino32 Micro with relays on one side to control lights and mosfets on the other side for […]
Category Archives: project logs
Homemade wristwatch – DaTajm
Mats posted his homemade wristwatch – DaTajm in the project log forum: DaTajm is a wristwatch based on a PIC16F1824 powered by a single CR1216 lithium coin cell. I’m using a sandwich of three PCBs. The topmost pcb (0.8mm thick) have 12 leds and a resistive touchpad on the top side and all the other […]
Yet another project: P01-114C POQiRX
Here’s another project by Asgard the POQiRX: This board is the optional 25.4 x 22.6 mm add-on board for the P01-109 BLiVIT. It mounts on the header provided on the BLiVIT, and is supported by header pins at the four corners. This board contains a Wireless Power Consortium receiver compliant with the Qi specification. By […]
Electronically controlled nichrome-wire cutter
Dilshan Jayakody presents an electronically controlled Nichrome-wire cutter: In this project we construct electronically Controlled Nichrome-Wire Cutter. The main feature of this cutter is its (non mechanical) variable temperature controller. The temperature of the Nichrome-Wire is controlled using TL494 PWM controller. In this design TL494 is oscillated with fixed frequency and only varying factor is […]
P01-118 GeePibber project
Asgard shared another project the GeePibber, an IEEE-488 (GPIB / HPIB) to USB adapter in the project log forum: This project is an IEEE-488 (GPIB / HPIB) to USB adapter. I need this because I recently acquired an ancient (but so am I) logic analyzer/oscilloscope which uses only the GPIB to read out and load the […]
P01-112 Powah project
Asgard posted his Powah, a little power on/off toggle with an indicator LED in the project log forum: This is a “standard” module I use for some of my other projects (see the BLiVIT thread). This version is a simple CMOS-level on/off toggle with debounce. The optional four pin positions just happen to lay […]
DSETA board, a CPU based on the Atmel AT89C51RE2
Jechavarria has designed and built this DSETA board, a CPU based on the Atmel AT89C51RE2: In my last projects, I always use the same CPU. DSETA board, I say in the posts. Well, here it is, a CPU based on the AT89C51RE2 microcontroller from Atmel. I develop this board for some reasons. The first and […]
Erl’s voltage reference
Erl shared his voltage reference project in the forum: I had almost 6 x 6 cm left over on a 10 x 10 board I was ordering from Seeed Studios, so inspired by the Mr. Ref voltage reference project, I made something similar. It’s based on the MAX6126 2.048 V reference, uses 3 AAA […]
Introducing G400-D, the most advanced NETMF SoM yet
This video demonstrates the new G400-D System on Module (SoM) by GHI Electronics: The all new G400-D System on Module (SoM) hosts a 400Mhz ARM9 processor and 128MB DDR2, making it capable of running full blown operating systems like Android. The SoM comes standard with Microsoft’s .NET Micro Framework (NETMF) and GHI’s premium libraries, no […]
P01-117 Rapper project
Asgard posted his Rapper project in the forum: What this is, is a small device that records a command sequence for a TV remote control, then emits the same sequence when activated by a pulse detected in a piezo transducer. Such pulse can be as simple as rapping your knuckles on the table where the Rapper […]
Using GSM module to remotely control a green wall
Want a comfortable workplace or livingroom with green walls that clean and freshen the air and helps you reduce your stress? Check out this green walls –FreshWall by Fresh Effect: We’re a Finnish start-up company which specializes in active green walls which can purify air 100x better than traditional green walls. Few years ago […]
USB LED Matrix controller board
MobileWill shared his project USB LED Matrix controller board in the project log forum: I displayed some projects next to Ian at the World Maker Faire Dangerous Prototypes booth, and I’m working on turning one of those projects into an Open Source Hardware product. I’m building a USB LED Matrix controller board and one of […]
Doomsday clock Arduino shield
Tully shared his Doomsday clock Arduino shield in the project log forum: Here I would like to log new innovations that can be done using the Doomsday Clock Arduino Shield. A recent innovation completed by Devin Sean McCullough, is a web-based graphical user interface that will write the code for you. This one is really fun […]
Sunrise alarm clock
Herpderp posted this picture of his sunrise alarm clock in the project log forum.
Easy Pulse board used as biofeedback for virtual jogging
Easy Pulse board used as biofeedback for virtual jogging: Sergej Stoetzer and two of his students just finished their virtual jogging project, where the Easy Pulse board has been used to provide a biofeedback to their system. They interfaced an ear-clip sensor to the Easy Pulse board to detect the heart beat during virtual jogging. […]
Dot Matrix wall writer – Time writer
Dot Matrix wall writer – Time writer: Olivier van Herpt invented a machine called the Time Writer. It allows any graffiti artist in training to get their message out to the masses with the push of a button. An Arduino controls the action here. The Arduino pulses a number of relays which open and close […]
Power charger and supply regulator
Asgard shared his BLiVIT project in the forum: One of the things I have noticed missing, for a pretty long time, is a good *safe* lithium cell charger that also supplies a load with a good efficient regulator. My answer, I hope is the BLiVIT. This is a moderate-sized board that incorporates charging from either […]
Auto-poweroff for an external USB hard drive
Hlipka has written an article about his auto-power-off project: I have an external hard drive connected to our satellite receiver for quite some time (to have it work as a PVR). But for some reason the disk won’t power down even with the receiver switched off (I verified – the disk itself is configured properly). […]
Project-a-week: RickPAW Betty crocker Arduino
This week Rwinscot shared his Betty crocker Arduino in the project log forum: I’d love to get into Arduino… but I don’t know how to solder. Which got me thinking about using through-hole sockets on a PCB. As the title of this post… a Betty Crocker Arduino. Add your through-hole components, mix, and bake your ideas. […]
Solenoid control project
Doub shared his solenoid control project in the forum: I’m working on a solenoid control board, that would allow me to do sensorless position control (the algorithm is based on the varying inductance of the solenoid depending on the plunger position).