Pre paid electricity meters have a way of running out of credit when you least expect it, leaving you in the dark late on Sunday night!
Likewise, coastal town sewerage conservancy tanks get full and overflow unexpectedly with nasty results. Our dual monitor keeps an eye on both the tank level
and the electricity meter credits and conveniently sends you a SMS when you need to take action. They are also controllable remotely via SMS.
As an added bonus it can open your door remotely via a PIN encoded SMS to admit guests, and you can turn your geyser (HWC) on and off remotely as well.
Detailed features: Read the manual
|Versatronics specializes in Arduino based projects. We have used Uno, Mega, Teensy, and Leonardo. We also make our own versions of the Uno for special applications where greater output currents or relay interfaces are required. Complex Arduino software projects have required over 2000 lines of code. Some of the interface applications have included GSM, WiFi, Internet, Cell phone, Mains power, Sound to light, Infra red controllers, Servo motors, Stepper motors, Robotics, Quadrature sine-wave generators, SD card loggers, SPI LED animations etc.|
|Most LUX meters measure only visible light. This LUX meter has an Infra Red channel and can also measure IR levels usually only found in very expensive lab instruments. Very suitable for security camera lighting installations comparisons and inspections. The unit is powered with a standard 9V battery and has a non locking read button to prevent leaving it on and flattening the battery,|
|When you have a project that uses a lot of micro controller ports, for example when using a 4X4 keypad you will have lost 8 ports, there is not many port pins left to drive a LCD - normally requiring a further 8 pins other than power and ground. This board uses only 2 lines and power lines, and interfaces to a standard Hitachi 2x16 LCD display.|
|Over the years I have bought/built many Inductance meters, none of which gave me the accuracy I needed for inductances less than 1uH. This meter is based on the Carver design (See original article) which gives superb accuracy and repeatability but requires lots of fiddling and some tricky maths for each measurement. Adding an Arduino to idea with a built in frequency counter and some maths crunching, turns it into a very decent LC-meter. As a bonus it also measures capacitance. The design idea is to use an oscillator running at 1MHz with a calibrated fixed capacitor. When an inductor or capacitor is introduced into the tank circuit the oscillator shifts frequency. This shift is used to calculate the inductor added.|
|In LED signage applications a need is for a high power driver to drive large lines or PWM RGB or SPI modules. This unit is 5V logic driven so is suitable for being driven from a micro controller port. The amp has 2 channels, so for a RGB installation you would require 2 of them. If the output is 5V each channel can drive up to 2A or 4A if only 1 channel is used. For a 12V supply these currents will be halved. (The heat sink is designed for 20W but with fan cooling each amp can drive up to 8A). We also provide a 10A, 10 channel flasher unit and driver amp where you might want to flash alternate sections of a LED animated sign or display.|
|This is a 4 channel Arduino based data logger. It has a DS1307 based RTC (Real time Clock) and a standard SD card for storing the data. The SD card is easily removable for easy download into a PC or it can be downloaded via an Arduino serial interface socket. The amount of data that can be stored is of course a function of the card size , but with a large enough card this could be several days at a 1 minute sampling rate. The input is limited to 25V DC but 2 of the channels can be selected as 230V AC direct input or connected to a LM35 temperature sensor. The logger requires only a 12V DC supply. All samples are saved as a time-stamped CSV file for instant import into MS Excel.|
|The batphone allows you to listen to bat sounds which are above our hearing range. It is tunable from 20kHz to 150kHz and is a full heterodyne type receiver.|
|My client had a need for a unit to convert 12V SPI signals to 5V SPI, in addition the reference had to be inverted (some SPI is referenced to +ve not to ground). There are 3 channels so it accomodates RGB nicely. A maximum of 300mA per channel or 1A for one channel.|
|To do accelerated aging tests on LED's or semiconductors you require an accurate oven to keep temperatures within 1 degree. This oven does that, it has a LM35 sensor feeding an Arduino controller with a cut-off timer. Inside the oven is a circulating fan. The temperature can be set between 20 and 100°C (any hotter and the polystyrene insulation will deform). The heating element is simply a standard 60W globe and the response loop time is pretty fast. It gets to 100°C from 20°C within a minute.|
|This unit has 2 divide by 10 outputs and a RF preamplifier. Arduino based frequency counters only work up to about 4MHz. Using this unit you can go up to 40 or 400MHz.|
|10 Channel Sealed Lead Acid (SLA) battery charger for the Cape Gliding Club. Each bank provides intelligent 2 rate charging for a 10Ah battery, and switches automatically to a standby trickle when the battery on that channel is charged, and can then be left on trickle charge indefinitely. Current limit, short circuit protection and reverse charging protection are included.|
|Versatronics specializes in Arduino and PIC projects where custom solutions are needed to interface or connect together any electronic products. Some recent products have been a geyser controller via the Internet and/or GSM SMS. Also experienced in GSM Commander, and interfaces to any device that needs to be controlled via SMS or Internet. We consult to the LED signage industry to provide complex solutions using embedded controllers for animated LED signs and bill-boards. We also provide training in best practices and basic wiring.|
We used an Arduino to provide 12 different bubble pattern programs and lighting programs for this wall mounted or room divider bubble curtain.
The video clip only shows a small fraction of the variety of programs. The curtain is installed in the Visions Gallery in Hout Bay and the idea was conceived by Jacques meyer
See the YouTube Demo here.
|Developed for Shoprite Checkers, it is a gated flasher for supermarket till display units. The requirement was to light the LEDs above the assistant and then flash and beep for a supervisor's attention when a button is pressed. It can be gated with a switch or 5V logic signal. The speed is adjustable and there is a driver for a 100dB beeper. The input is 12V and the LED load can be up to 15W.|
|These are PIC or Arduino based controllers to drive FastSPI LED strips, where each LED in the strip is uniquely addressable in terms of it's brightness and RGB levels.
Click on the picture for a YouTube demo. The possibilities are as limited as your imagination. As each 'pixel' is individually addressable, any kind of motion and direction can be achieved.
We design the hardware to specification as well as all custom software to achieve the effect you desire.
See the YouTube FastSPI Demo here.
|The RC (Radio control) switch is a unit that can be connected to a radio control remote receiver servo output, to provide simple on/off switching eg for landing lights or small motors. The unit includes a 5V regulator so it can be driven from 5 to 15v.|
|The Cape Gliding Club required a signaling unit between the winch driver and the glider about to be launched. The controller signals with 3 different flashing rates driving 30A lights. The states have logic interlocks to prevent ambiguous signals and the unit is housed in a rugged box with heavy duty wires.|
|We design and build Arduino based robots for any desired need. This robot is a self thinking (autonomous) person who navigates himself around obstacles using ultrasonic echo location and some clever artificial intelligence.|
|This project was developed to meet the criteria for upgrading from a ZR to ZS call sign, ie a 1W CW only transmitter. It was designed to be as simple and with as few components as possible, and yet still actually function with reasonable performance. Its called the 1 hour TX because that's how long it takes to build the kit. Put another way, all that stands between a new radio ammeteur (ZR) and a ZS call sign is 1 hour of real amateur radio stuff. This is a low tech project suitable for novice constructors and can be made with a minimum of equipment.||
Click here to go to the project page......
Click here to go to the TID Amp
|This is a high quality, precision audio hi-fi amplifier designed to minimize THD. As most naive hi-fi buyers compare harmonic distortion specs between amplifiers and influence their choice on little else, manufacturers compete by using large amounts of negative feedback to reduce their total harmonic distortion (THD) to low levels, while, sacrificing transient response. The ear can not hear harmonic distortion below about 5%. Even excellent loudspeakers produce 1 to 5% THD at low frequencies! TID is seldom specified in commercial hi-fi amplifiers, as it is difficult to measure. Some designers now hold the view that in current amplifier designs, harmonic and inter modulation distortion levels are so low that transient effects are the main cause of audible differences between designs.|
|For 30 years I have been designing and building custom HF and VHF band radio transceivers. These are mostly for the Amateur Radio bands and have been aimed at low power and light weight.||
Click here to go to the Transceiver page......